IEC 60730-2-8:2018
(Main)Automatic electrical controls - Part 2-8: Particular requirements for electrically operated water valves, including mechanical requirements
Automatic electrical controls - Part 2-8: Particular requirements for electrically operated water valves, including mechanical requirements
IEC 60730-2-8:2018 applies to electrically operated water valves for use in, on or in association with equipment for household and similar use, including heating, air-conditioning and similar applications. The equipment can use electricity, gas, oil, solid fuel, solar thermal energy, etc., or a combination thereof. This document is applicable to electrically operated water valves for building automation within the scope of ISO 16484. This document also applies to automatic electrically operated water valves for equipment that can be used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications. This document does not apply to electrically operated water valves intended exclusively for industrial process applications unless explicitly mentioned in the relevant equipment standard. This document applies to electrically operated water valves powered by primary or secondary batteries, requirements for which are contained within the standard, including Annex V. This document does not cover the prevention of contamination of drinking water as a result of contact with materials. This document applies to the inherent safety, to the operating values, operating times and operating sequences where such are associated with equipment safety, and to the testing of automatic electrical control devices used in, on or in association with, household and similar equipment. This document contains requirements for electrical features of water valves and requirements for mechanical features of valves that affect their intended operation. This document is also applicable to electrically operated water valves for appliances within the scope of the IEC 60335 series of standards. This document does not apply to:
- electrically operated water valves of nominal connection size above DN 50;
- electrically operated water valves for admissible nominal pressure rating above 1,6 MPa;
- food dispensers;
- detergent dispensers;
- steam valves;
- electrically operated water valves designed exclusively for industrial applications. This document applies to electrically operated water valves, responsive to or controlling such characteristics as temperature, pressure, passage of time, humidity, light, electrostatic effects, flow, or liquid level, current, voltage, acceleration, or combinations thereof. This document also applies to actuators and to valve bodies which are designed to be fitted to each other. This document applies to individual valves, valves utilized as part of a system and valves mechanically integral with multi-functional controls having non-electrical outputs. This document applies to AC or DC powered electrically operated water valves with a rated voltage not exceeding 690 V AC or 600 V DC. This document does not take into account the response value of an automatic action of a valve, if such a response value is dependent upon the method of mounting the valve in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer shall apply. This document applies also to electrically operated water valves incorporating electronic devices, requirements for which are contained in Annex H. This document applies also to electrically operated water valves using NTC or PTC thermistors, requirements for which are contained in Annex J. This document applies to the electrical and functional safety of electrically operated water valves capable of receiving and responding to communications signals, including signals for power billing rate and demand response. The signals can be transmitted to or received from external units being part of the valve (wired), or to and from external units which are not part of the valve (wireless) under test. This document does not address the integrity of the output signal to the network devices, such as interope
Dispositifs de commande électrique automatiques - Partie 2-8: Exigences particulières pour les électrovannes hydrauliques, y compris les exigences mécaniques
IEC 60730-2-8:2018 est disponible sous forme de IEC 60730-2-8:2018 RLV qui contient la Norme internationale et sa version Redline, illustrant les modifications du contenu technique depuis l'édition précédente.
General Information
Relations
Overview
IEC 60730-2-8:2018 is the IEC particular standard for electrically operated water valves, part of the IEC 60730 series on automatic electrical controls. It supplements IEC 60730-1 and defines electrical and mechanical safety, performance and test requirements for valves used with household and similar equipment (heating, air‑conditioning, building automation, public buildings, commercial and some industrial applications). The standard covers AC and DC powered valves (rated ≤ 690 V AC / 600 V DC), battery‑powered valves (Annex V) and valves incorporating electronics (Annex H) or thermistors (Annex J).
Key topics and requirements
- Scope limits: excludes valves with nominal connection size above DN50, admissible pressure rating above 1.6 MPa, steam valves, food/detergent dispensers and valves exclusively for industrial processes.
- Safety and functional requirements: inherent safety, operating values/times, operating sequences where tied to equipment safety.
- Electrical tests and construction: insulation/electric strength, terminals/terminations, protective earthing, clearance/creepage distances.
- Environmental and mechanical tests: moisture/dust resistance, heating, endurance, mechanical strength, torque and threaded connection testing.
- Fluid‑dynamic and pressure testing: transient pressure measurement rigs (Annex BB/EE), long‑term pressure tests for thermoplastic bodies (Annex CC).
- Electronic features and EMC: requirements for embedded electronics (Annex H), immunity and emission tests (EMC), and considerations for valves that receive/act on communication signals (demand response, billing signals).
- Special components: requirements for actuators, valve bodies, valves using NTC/PTC thermistors (Annex J), and valves mechanically integral with multifunction controls.
- Documentation and markings: rating, classification and required information for safe installation and use.
Practical applications
- Ensures safe, reliable operation of electrically operated water valves in:
- Residential HVAC and plumbing systems
- Building automation (within ISO 16484 scope)
- Commercial equipment (shops, offices, hospitals, catering)
- Appliances covered by the IEC 60335 series
- Guides manufacturers on design validation, conformity testing and technical documentation.
- Helps test laboratories and certification bodies perform consistent safety and EMC testing.
- Supports specifiers, installers and asset managers in selecting valves with verified mechanical and electrical performance.
Who should use this standard
- Valve and actuator manufacturers
- Appliance and HVAC equipment designers
- Test labs, conformity assessment and certification bodies
- Building automation integrators and system specifiers
- Regulatory authorities and compliance engineers
Related standards
- IEC 60730-1 (general automatic electrical controls requirements)
- IEC 60335 series (appliances)
- ISO 16484 (building automation and control systems)
Keywords: IEC 60730-2-8, electrically operated water valves, valve testing, building automation, actuator safety, EMC, thermoplastic valves, automatic electrical controls.
Standards Content (Sample)
IEC 60730-2-8 ®
Edition 3.0 2018-08
INTERNATIONAL
STANDARD
Automatic electrical controls –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
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IEC 60730-2-8 ®
Edition 3.0 2018-08
INTERNATIONAL
STANDARD
Automatic electrical controls –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.120 ISBN 978-2-8322-5917-7
– 2 – IEC 60730-2-8:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope and normative references . 7
2 Terms and definitions . 9
3 General requirements . 13
4 General notes on tests . 13
5 Rating . 13
6 Classification . 13
7 Information . 16
8 Protection against electric shock . 17
9 Provision for protective earthing . 18
10 Terminals and terminations . 18
11 Constructional requirements . 19
12 Moisture and dust resistance . 19
13 Electric strength and insulation resistance . 19
14 Heating . 20
15 Manufacturing deviation and drift . 21
16 Environmental stress . 21
17 Endurance . 22
18 Mechanical strength . 23
19 Threaded parts and connections . 26
20 Creepage distances, clearances and distances through insulation . 26
21 Resistance to heat, fire and tracking . 26
22 Resistance to corrosion . 26
23 Electromagnetic compatibility (EMC) requirements – Emission . 26
24 Components . 27
25 Normal operation . 27
26 Electromagnetic compatibility (EMC) requirements – Immunity. 27
27 Abnormal operation . 27
28 Guidance on the use of electronic disconnection . 30
Annex H (normative) Requirements for electronic controls . 31
Annex AA (informative) Relation between different flow coefficients . 36
Annex BB (normative) Arrangement for the measurement of transient pressures
caused by water valves . 37
Annex CC (normative) Long term pressure test for thermoplastic bodied valves . 40
Annex DD (normative) Torque . 42
Annex EE (normative) Arrangement for the measurement of transient pressures
caused by water valves with a declared pressure of up to and including 1,0 MPa
(10 bar) . 46
Bibliography . 48
Figure BB.1 – Transient pressure measurement test rig schematic diagram . 38
Figure DD.1 – Arrangements for carrying out the torque test . 42
Figure EE.1 – Transient pressure measurement test rig for valves with a declared
pressure of up to and including 1,0 MPa (10 bar) schematic diagram . 46
Table 1 – Required information and methods of providing information . 16
Table 101 – Nominal size and thread size of end connections . 16
Table 102 – Torque test requirement for metal valves with internal threaded end-
connections . 25
Table 103 – Torque test requirement for metal valves with external threaded end-
connections . 26
Table 104 – Maximum winding temperature (for test of blocked output conditions and
valves declared under Table 1, item 113) . 28
Table CC.1 – Test requirements for valves intended for uses other than the control of
water for tap and shower outlets . 40
Table CC.2 – Test requirements for valves intended for the control of water for tap and
shower outlets . 41
Table DD.1 – Required torque for test . 43
Table DD.2 – Tightening torque in newton metres (Nm) for bolts and screws for
adaptors . 44
– 4 – IEC 60730-2-8:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
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2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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6) All users should ensure that they have the latest edition of this publication.
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60730-2-8 has been prepared by IEC technical committee 72:
Automatic electrical controls.
This third edition cancels and replaces the second edition published in 2000,
Amendment 1:2002 and its Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• alignment of the text with IEC 60730-1 fifth edition (2013) including Amendment 1:2015;
• introduction of specific requirements for thermoplastic bodied valves for the control of
water for tap and shower outlets (18.101.4.3 and Annex CC);
• removal of Subclause 18.102 Wetted material specifications.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The text of this International Standard is based on the following documents:
CDV Report on voting
72/1077/CDV 72/1120/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2-8 is intended to be used in conjunction with IEC 60730-1. It was established on
the basis of the fifth edition (2013) including Amendment 1 (2015) of that publication.
This part 2-8 supplements or modifies the corresponding clauses in IEC 60730-1 so as to
convert that publication into the IEC standard: Safety requirements for electrically operated
water valves, including mechanical requirements.
Where this part 2-8 states "addition", "modification" or "replacement", the relevant
requirement, test specification or explanatory matter in part 1 should be adapted accordingly.
Where no change is necessary, part 2-8 indicates that the relevant clause or subclause
applies.
In the development of a fully international standard, it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
The "in some countries" notes regarding differing national practices are contained in the following elements:
– Table 1, footnotes ab and ac
– Table 13, footnote aa
– 1.1.4
– 16.2.1
– 18.101.3
– 27.2.3.1
– 27.101
– Table DD. 1, footnote a
– Table DD.2, footnote a
In this publication:
1) The following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Notes: in smaller roman type.
– Defined terms: in bold type
2) Subclauses, notes, tables or figures which are additional to those in part 1 are numbered
starting from 101, additional annexes are lettered AA, BB, etc.
– 6 – IEC 60730-2-8:2018 © IEC 2018
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
A bilingual version of this publication may be issued at a later date.
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
1 Scope and normative references
This clause of Part 1 is applicable except as follows:
1.1 Scope
Replacement:
This part of IEC 60730 applies to electrically operated water valves for use in, on or in
association with equipment for household and similar use, including heating, air-conditioning
and similar applications. The equipment can use electricity, gas, oil, solid fuel, solar thermal
energy, etc., or a combination thereof.
NOTE 1 Throughout this document, the word "equipment" means "appliances and equipment."
This document is applicable to electrically operated water valves for building automation
within the scope of ISO 16484.
This document also applies to automatic electrically operated water valves for equipment that
can be used by the public, such as equipment intended to be used in shops, offices, hospitals,
farms and commercial and industrial applications.
EXAMPLE 1: Electrically operated water valves for commercial catering, heating and air-conditioning equipment.
This document does not apply to electrically operated water valves intended exclusively for
industrial process applications unless explicitly mentioned in the relevant equipment standard.
This document applies to electrically operated water valves powered by primary or secondary
batteries, requirements for which are contained within the standard, including Annex V.
This document does not cover the prevention of contamination of drinking water as a result of
contact with materials.
1.1.1 This document applies to the inherent safety, to the operating values, operating times
and operating sequences where such are associated with equipment safety, and to the testing
of automatic electrical control devices used in, on or in association with, household and
similar equipment.
This document contains requirements for electrical features of water valves and requirements
for mechanical features of valves that affect their intended operation.
This document is also applicable to electrically operated water valves for appliances within
the scope of the IEC 60335 series of standards.
This document does not apply to:
– electrically operated water valves of nominal connection size above DN 50;
– electrically operated water valves for admissible nominal pressure rating above 1,6 MPa;
– 8 – IEC 60730-2-8:2018 © IEC 2018
– food dispensers;
– detergent dispensers;
– steam valves;
– electrically operated water valves designed exclusively for industrial applications.
Throughout this document, where it can be used unambiguously, the term:
– "valve" is used to denote an electrically operated water valve (including actuator and valve
body assembly);
– "actuator" means "electrically operated mechanism or prime mover";
– "valve body" means "valve body assembly";
– "equipment" includes "appliance" and "control system".
1.1.2 This document applies to electrically operated water valves, responsive to or
controlling such characteristics as temperature, pressure, passage of time, humidity, light,
electrostatic effects, flow, or liquid level, current, voltage, acceleration, or combinations
thereof.
1.1.3 This document also applies to actuators and to valve bodies which are designed to be
fitted to each other.
1.1.4 This document applies to individual valves, valves utilized as part of a system and
valves mechanically integral with multi-functional controls having non-electrical outputs.
NOTE Attention is drawn to the fact that, in many countries, additional test requirements and by-laws have been
established by the water authorities or companies.
1.1.5 This document applies to AC or DC powered electrically operated water valves with a
rated voltage not exceeding 690 V AC or 600 V DC.
1.1.6 This document does not take into account the response value of an automatic action
of a valve, if such a response value is dependent upon the method of mounting the valve in
the equipment. Where a response value is of significant purpose for the protection of the
user, or surroundings, the value defined in the appropriate equipment standard or as
determined by the manufacturer shall apply.
1.1.7 This document applies also to electrically operated water valves incorporating
electronic devices, requirements for which are contained in Annex H.
1.1.8 This document applies also to electrically operated water valves using NTC or PTC
thermistors, requirements for which are contained in Annex J.
1.1.9 This document applies to the electrical and functional safety of electrically operated
water valves capable of receiving and responding to communications signals, including
signals for power billing rate and demand response.
The signals can be transmitted to or received from external units being part of the valve
(wired), or to and from external units which are not part of the valve (wireless) under test.
1.1.10 This document does not address the integrity of the output signal to the network
devices, such as interoperability with other devices unless it has been evaluated as part of the
control system.
1.2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads – Part 1:
Dimensions, tolerances and designation
ISO 65:1981, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads – Part 1:
Dimensions, tolerances and designation
ISO 630, Structural steels – Plates, wide flats, bars sections and profiles
ISO 1179-1, Connections for general use and fluid power – Ports and stud ends with
ISO 228-1 threads with elastomeric or metal-to-metal sealing – Part 1: Threaded ports
ISO 4144, Pipework – Stainless steel fittings threaded in accordance with ISO 7-1
2 Terms and definitions
This clause of Part 1 is applicable, except as follows:
2.2 Definitions of types of control according to purpose
2.2.17
electrically operated valve
Addition:
Note 1 to entry: A semi-automatic valve that is opened manually and closes automatically or vice versa is also
covered by this definition.
Additional definitions:
2.2.17.101
valve
device consisting of an actuator connected to a valve body assembly and used to stop or
regulate the flow of fluid by the closure or partial closure of an orifice
2.2.17.102
water valve
valve intended to be connected to a water supply and to control water flow
2.2.17.103
heating-water valve
valve intended to control the water circulation in heating systems
2.2.17.104
actuator
electrically operated mechanism or prime mover used to effect the opening or closing action
of a valve
ISO 630 has been withdrawn.
– 10 – IEC 60730-2-8:2018 © IEC 2018
Note 1 to entry: An actuator may be integral with the valve, fixed to the valve body assembly or delivered as a
separate component.
Note 2 to entry: An actuator may also include the valve and closure member.
2.2.17.105
valve body assembly
assembly comprising the valve body, inlet and outlet end connections, the valve seat, closure
member and stem or shaft
Note 1 to entry: In some cases, the stem and closure member may be part of the actuator.
2.2.17.106
valve body
part of the valve body assembly which is the main pressure boundary
Note 1 to entry: It provides the water flow passage-ways with end connections.
2.2.17.107
nominal size
numerical designation of size which is common to all components in a fluid-conducting system
other than components designated by outside diameter or by thread size
Note 1 to entry: It may be designated by "DN" followed by a convenient round number, for reference purposes
only.
Note 2 to entry: Some older international standards refer to nominal size as nominal diameter but, for the purpose
of this document, the two terms are synonymous.
2.2.17.108
nominal pressure rating
numerical designation of pressure rating
Note 1 to entry: It may be designated by the letters "PN" (also referred to as the pressure number) followed by a
convenient round number, for reference purposes only.
2.2.17.109
end connection
valve body configuration provided to make a pressure-tight joint to the fluid-conducting
system
2.2.17.110
valve seat
surface of the orifice within the valve which makes full contact with the closure member
2.2.17.111
closure member
movable part of the valve which is positioned in the flow path to modify the rate of flow
through the valve
Note 1 to entry: A closure member may be a plug, ball, disc, vane, gate, etc.
2.2.17.112
stem
component which connects the actuator to, and positions, the closure member
Note 1 to entry: For rotary valves, the word "shaft" should be used in place of "stem".
Note 2 to entry: In some controls, the stem may be part of the actuator.
2.2.17.113
fitting
any device such as a reducer, expander, elbow, or T-piece which is attached directly to an
end-connection of the valve body assembly
2.3 Definitions relating to the function of controls
2.3.29
maximum working pressure
Modification:
Delete “maximum rated pressure”.
Additional definitions:
2.3.101
on-off valve
valve which is open or closed, without any intermediate positions
2.3.102
normally closed valve
valve which is closed when not electrically energized
2.3.103
normally open valve
valve which is open when not electrically energized
2.3.104
modulating valve
valve which has a variable flow rate between predetermined flow limits
2.3.105
diverting valve
valve with one or more inputs and outputs which may permit flow from any combination of
inputs to outputs
2.3.106
closed position
position of the closure member when there is no water flow from the outlet side of the valve
2.3.107
travel
displacement of the closure member from the closed position
2.3.108
rated travel
displacement of the closure member from the closed position to the full open position
2.3.109
open position
position of the closure member when there is a flow of water from the outlet side of the valve
2.3.110
fully open position
position of the closure member so that the amount of water flowing through the valve is in
accordance with the rated flow rate
– 12 – IEC 60730-2-8:2018 © IEC 2018
2.3.111
flow rate
volume of water flowing through the valve in unit time
2.3.112
rated flow rate
flow rate at the rated travel under standard reference conditions of temperature and pressure
declared at a given pressure difference
2.3.113
flow factor
factor specifying the amount of water which can pass through the valve at a specified
pressure difference
Note 1 to entry: The flow factor may be referred to as flow coefficient.
Note 2 to entry: The relationship between the different flow factors in use is indicated in Annex AA.
2.3.114
maximum operating pressure differential
declared maximum difference in pressure between inlet and outlet ports of the valve against
which the actuator can operate the closure member
2.3.115
minimum operating pressure differential
declared minimum pressure difference at which the valve opens or closes
2.3.116
Void
2.3.117
water hammer
excessive transient pressure which can occur in some water supply systems as a result of
closing a valve as intended
2.3.118
transient pressure
short-time pressure surge exceeding the normal stable supply pressure in the closed
condition of the valve
2.3.119
valve with anti-water-hammer characteristics
valve that does not cause an excessive pressure drop when opening and no excessive
transient pressure when closing if connected directly, without special precautions to water
supply mains applications where water-hammer may occur
2.13 Miscellaneous definitions
Additional definitions:
2.13.101
Void
2.13.102
Void
2.13.103
water for tap and shower outlets
water intended to supply a bath, shower, bidet, wash basin, kitchen sink, or other such taps
that discharge in to a drainage system
3 General requirements
This clause of Part 1 is applicable.
4 General notes on tests
This clause of Part 1 is applicable, except as follows:
4.1 Conditions of test
4.1.2 Addition:
Unless otherwise specified in this document, water temperature for the tests shall be
maintained at a temperature of (20 ± 5) °C.
4.2 Samples required
4.2.1 Addition:
One sample is required for each test of Clause 27.
NOTE 101 By agreement between manufacturer and testing authority, one sample can be submitted to more than
one test.
5 Rating
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable, except as follows:
6.3.12 – electrically operated valve;
Additional subclause:
6.3.12.101 – water valve;
6.5.2 According to degree of protection provided by enclosures against harmful ingress of
water (see IEC 60529)
Replacement of the second Note as follows:
NOTE 2 Preferred degrees of protection provided by enclosures are: IP20, IP30, IP40, IP54, IP65.
Values differing from these preferred values are allowed.
– 14 – IEC 60730-2-8:2018 © IEC 2018
6.7 According to ambient temperature limits of the switch head
Modification:
In 6.7.1 and 6.7.2, read "valve" for "control" and "actuator" for "switch head".
6.8 According to protection against electric shock
6.8.3 Replacement:
For an independently mounted valve or a valve integrated or incorporated in an assembly
utilizing a non-electrical source:
6.10 Not applicable.
6.11 According to number of automatic cycles 6.11 (A) of each automatic action
Addition:
Water valves shall be subjected to a minimum of 6 000 automatic cycles.
Additional subclauses:
6.101 According to type of end-connections
6.101.1 Valves provided with internally threaded end-connections with either:
a) ISO 7-1 or NPT thread when pressure-tight joints are made on the thread, or
b) ISO 228-1 thread when pressure-tight joints are not made on the thread, but via an
additional sealing washer.
6.101.2 Valves provided with externally threaded end-connections for:
a) compression fittings, or
b) washered union connection, or
c) cone seated union connection, or
d) threaded pipe connections either according to ISO 7-1, ISO 228-1 or NPT thread.
6.101.3 Valves provided with flanged end-connections suitable for connection to flanges with
or without adaptors.
6.101.4 Valves provided with end-connections with neck-end for soldered or welded
connections.
6.101.5 Valves provided with end-connections with hose tails for use with flexible tubing.
6.102 According to features of electrically operated water valves
6.102.1 According to the size and capacity:
Size and capacity to be specified in dimension of inlet and outlet connections and flow factor.
6.102.2 According to the type of operation:
Direct or pilot controlled with or without minimum pressure differential limit.
6.102.3 According to function:
Description of function regarding the number of water connections and the valve position
when de-energized.
6.102.4 According to material of wetted parts:
Includes the material identification of all internal parts in contact with water such as the body
and the sealing material.
6.102.5 According to construction of the closure member:
The valve may be a direct operated or pilot valve controlled diaphragm or piston-operated
poppet type or spool type closing member.
6.102.6 According to construction of the actuator:
Examples are: electromagnetic; electric motor; electrically heated wax or bi-metal controlled
actuator with actuator stem in contact with or shielded from the water.
6.103 According to temperature, pressure and type of the water controlled
Valves for controlling:
6.103.1 Cold water supply with a maximum temperature of 25 °C;
6.103.2 Hot water supply with a maximum temperature of 90 °C;
6.103.3 Void
6.103.4 Void
6.103.5 Circulation heating water with a maximum temperature of between 50 °C and 120 °C;
6.103.6 Water with a maximum rated temperature other than indicated above;
6.103.7 Water flow in systems with a maximum pressure of 0,1 MPa;
6.103.8 Water flow in systems with a maximum pressure of 0,6 MPa;
6.103.9 Water flow in systems with a maximum pressure of 0,86 MPa;
6.103.10 Water flow in systems with a maximum pressure of 1,0 MPa;
6.103.11 Water flow in systems with a maximum pressure of 1,6 MPa;
6.103.12 Water flow in systems with a maximum system pressure other than indicated above.
6.104 According to nominal size and thread size of end connections
The nominal size and the thread size of end connections are given in Table 101.
– 16 – IEC 60730-2-8:2018 © IEC 2018
Table 101 – Nominal size and thread size of end connections
Designation of thread (inch) Nominal size
1/8 DN 6
1/4 DN 8
3/8 DN 10
1/2 DN 15
3/4 DN 20
1 DN 25
1 ¼ DN 32
1 ½ DN 40
2 DN 50
NOTE The designation "DN" followed by the appropriate convenient round number
is normally only loosely related to manufacturing dimensions and corresponds for
reference purposes only approximately to the internal diameter expressed in
millimetres of the water system.
7 Information
This clause of Part 1 is applicable, except as follows:
Table 1 – Required information and methods of providing information
Modification:
Replace the following items by:
Information Clause or Method
subclause
7 The type of load controlled by each circuit (for valves with switching 6.2, 14, 17, C
b
devices) 23.1.1
22 Temperature limits of the actuator, if T lower than 0 °C, or T 6.7, 14.5, D
min max
other than 55 °C 14.7, 17.3
26 Not applicable
28 Not applicable
29 Type of disconnection or interruption provided by each circuit (for 6.9, 2.4 X
valves with switching devices)
36 to 38 Not applicable
aa
39 Type 1 or type 2 action (for valves with switching devices) 6.4 D or E
40 Additional features of type 1 or type 2 actions (for valves with switching 6.4.3, 11.4 D or E
aa
devices)
41 Manufacturing deviation and condition of test appropriate to deviation 11.4.3, 15, X
(for valves with switching devices) 17.14, 2.11.1
42 Drift (for valves with switching devices) 11.4.3, 15, X
2.11.2
43 to 44 Not applicable
47 Not applicable
49 Control pollution situation of actuator 6.5.3 D or E
Add the following additional items:
Information Clause or Method
subclause
101 Power consumption in watts or in VA or current rating C
102 Maximum operating pressure differential in MPa (or in bar) 2.3.114 D
103 Minimum operating pressure differential in MPa (or in bar) 2.3.115 D
104 Maximum working pressure in MPa (or in bar) 2.3.29, 6.103 D
105 Flow direction indicated by an arrow (on valve body) C
106 Maximum water temperature in °C 6.103 D
107 Void
108 For valves intended to be cleaned in normal use, the method of 18.1.101 D
disassembling, cleaning, reassembling and maintenance
109 If valve is intended to be used in water supply installations where water 18.101.3 X
hammer may occur
110 Material identification of wetted parts 6.102.4 X
111 Valve features 6.101, 6.102 D
112 Plastic valves intended to be hand-tightened 18.103.5 D
113 Valves incorporated in those household appliances covered by the 14.5.107, D
IEC 60335 series where the loss of water supply or dry valve is 27.101
ab
considered as an abnormal use condition
114 For valves identified under item 113, details of any limitation of 27.101.2 D
ac
operating time (duty cycle)
115 Water valve intended to be used in accordance with IEC 60335 18.101.3 D
116 If the valve is intended to be used for the control of water for tap and 2.13.103 D
shower outlets 18.101.4
aa
The water valve itself is type 1 action.
ab
Not applicable in Canada, Japan and the USA.
ac
Not applicable in Canada, Japan, and the USA.
7.4 Additional requirements for marking
This clause of Part 1 is applicable except as follows:
7.4.4 Not applicable.
8 Protection against electric shock
This clause of Part 1 is applicable, except as follows:
8.1.4 Addition:
For class II water valves, reinforced insulation shall not be in direct contact with the water.
Additional subclause:
8.1.101 Valves which are declared capable of being cleaned in normal use shall be so
constructed that there is adequate protection against accidental contact with live parts during
cleaning.
– 18 – IEC 60730-2-8:2018 © IEC 2018
Compliance is checked by inspection and by a simulated cleaning operation as described
below:
If the actuator can be removed from the valve body assembly without disconnecting the
electrical wiring, the removed actuator shall still meet the requirements for its class of
construction. Removal shall not affect electrical characteristics.
If the actuator can only be removed from the valve body assembly after removing the
electrical wiring:
a) the inspection and simulated cleaning operation shall be made in accordance with the
manufacturer's instructions in the documentation;
b) if a plug connector is used, this removal shall be impossible before the plug connector is
disconnected. Plug connectors for actuators with earth connection shall be so designed
that the disconnection of the electrical supply takes place prior to the disconnection of the
earthed wire.
NOTE For plug connectors, reference is made to ISO 4400 and ISO 6952.
9 Provision for protective earthing
This clause of Part 1 is applicable.
10 Terminals and terminations
This clause of Part 1 is applicable, except as follows:
10.1 Terminals and terminations for external copper conductors
10.1.1.1 Delete Note 2.
10.1.16 Flying leads (pig tails)
Modification:
Replace the first sentence by:
Where flying lead (pig tail) connections are used, the lead or leads shall be no smaller than
0,75 mm with an insulation having a nominal thickness not less than 0,6 mm and shall be a
minimum of 450 mm long as measured from the coil to the end of the lead, except if the flying
lead is intended to be connected to the wiring within the valve enclosure, in which case the
flying lead shall be at least 150 mm long.
10.1.16.1 Replacement:
Flying leads shall be provided with strain relief for attachment method Z to prevent
mechanical stress from being transmitted to terminals for internal wiring.
Compliance is checked by inspection and by applying a pull of 44 N for 1 min.
During the pull, the lead shall not be damaged and shall not have been displaced
longitudinally by more than 2 mm after the test. Creepage distances and clearances shall not
have been reduced to less than the value specified in Clause 20.
10.2 Terminals and terminations for internal conductors
Additional notes:
NOTE 101 The requirements of 10.2 also apply to terminals and terminations of water valves which are intended
to be used for internal wiring which is external to the equipment.
NOTE 102 The requirements of 10.2 apply to terminals and terminations deliberately designed to accept special
connectors such as the plug connectors described in ISO 4400 and ISO 6952.
NOTE 103 The requirements of 10.2 apply to terminals and terminations deliberately designed for connection of
pilot duty loads.
11 Constructional requirements
This clause of Part 1 is applicable, except as follows:
11.3 Actuation and operation
Modification:
For "controls" read "valves with auxiliary switches" throughout entire Subclause 11.3 and its
subdivisions.
Replacement:
11.3.9 Manually actuated mechanisms
11.3.9.1 Operation of a manually actuated mechanism of a valve shall not subject parts to
distortion or damage to the extent that their intended function is impaired.
Compliance is checked by operation and inspection.
11.3.9.2 Operating parts shall be separated from conductors to be connected to the valve by
barriers or by their physical location so that such operating parts are not obstructed by stowed
wiring.
Compliance is checked by operation and inspection.
Additional subclause:
11.101 Separation of wetted parts from electrical parts
There shall be no leakage of water to the electrical parts.
Compliance is checked by inspection after the pressure test of 18.101.1.
12 Moisture and dust resistance
This clause of Part 1 is applicable.
13 Electric strength and insulation resistance
This clause of Part 1 is applicable.
– 20 – IEC 60730-2-8:2018 © IEC 2018
14 Heating
This clause of Part 1 is applicable, except as follows:
14.4.3.1 Not applicable.
Additional subclauses:
14.4.101 If stalling of the motorized electric actuator drive shaft is part of normal operation,
then the drive shaft of motorized actuators shall be stalled and temperatures measured after
steady-state conditions are reached. The temperatures shall comply with the values of
Table 13. In addition, if any protective device provided does not cycle under stalled conditions,
then the electric actuator is also considered to comply with the requirements of 27.2.3 and
27.2.101 if applicable.
14.4.102 If stalling of the motorized electric actuator drive shaft is not part of normal
operation, then the values of Table 13 do not apply during stalling. The electric actuator shall
comply with the requirements of 27.2.3 and 27.2.101 if applicable.
14.5 Replacement:
Actuators of valves are tested at room temperature or in appropriate heating and/or
refrigerating apparatus and fitted such that the conditions in 14.5.1, 14.5.2, 14.5.101 to
14.5.104, and 14.5.107 are obtained.
14.5.1 Replacement:
For the test of 14.5.105, the ambient temperature of the actuator is maintained in the range
of 15 °C to 30 °C, the resulting measured temperature being corrected to a 25 °C reference.
14.5.2 Replacement:
For the test of 14.5.106, the ambient temperature of the actuator is maintained at T .
max
Additional subclauses:
14.5.101 If the valve includes switching devices or other auxiliary circuits, all such circuits
shall be loaded to carry rated current during the temperature test.
14.5.102 A modulating valve shall be caused to execute successive complete cycles of the
modulating action for which it is designed until constant temperatures are reached. The t
...
IEC 60730-2-8 ®
Edition 3.0 2018-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Automatic electrical controls for household and similar use –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
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IEC 60730-2-8 ®
Edition 3.0 2018-08
REDLINE VERSION
INTERNATIONAL
STANDARD
colour
inside
Automatic electrical controls for household and similar use –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 97.120 ISBN 978-2-8322-6015-9
– 2 – IEC 60730-2-8:2018 RLV © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope and normative references . 7
2 Terms and definitions . 10
3 General requirements . 13
4 General notes on tests . 13
5 Rating . 14
6 Classification . 14
7 Information . 17
8 Protection against electric shock . 19
9 Provision for protective earthing . 20
10 Terminals and terminations . 20
11 Constructional requirements . 21
12 Moisture and dust resistance . 21
13 Electric strength and insulation resistance . 22
14 Heating . 22
15 Manufacturing deviation and drift . 23
16 Environmental stress . 23
17 Endurance . 24
18 Mechanical strength . 25
19 Threaded parts and connections . 29
20 Creepage distances, clearances and distances through insulation . 29
21 Resistance to heat, fire and tracking . 29
22 Resistance to corrosion . 29
23 Electromagnetic compatibility (EMC) requirements – Emission . 29
24 Components . 29
25 Normal operation . 29
26 Electromagnetic compatibility (EMC) requirements – Immunity. 30
27 Abnormal operation . 30
Annex H (normative) Requirements for electronic controls . 35
Annex AA (informative) Relation between different flow coefficients . 40
Annex BB (normative) Arrangement for the measurement of transient pressures
caused by water valves . 41
Annex CC (normative) Test on valve bodies of thermoplastic material intended to be
connected to the water supply mains Long term pressure test for thermoplastic bodied
valves . 44
Annex DD (normative) Torque . 46
Annex EE (normative) Arrangement for the measurement of transient pressures
caused by water valves with a declared pressure of up to and including 1,0 MPa (10
bar) . 50
Bibliography . 52
Figure BB.1 – Transient pressure measurement test rig schematic diagram . 42
Figure DD.1 – Arrangements for carrying out the torque test . 46
Figure EE.1 – Transient pressure measurement test rig for valves with a declared
pressure of up to and including 1,0 MPa (10 bar) schematic diagram . 50
Table 1 – Required information and methods of providing information . 18
Table 101 – Nominal size and thread size of end connections . 17
Table 102 – Torque test requirement for metal valves with internal threaded end-
connections . 28
Table 103 – Torque test requirement for metal valves with external threaded end-
connections . 28
Table 104 – Maximum winding temperature (for test of blocked output conditions and
valves declared under Table 1, item 113) . 32
Table CC.1 – Test requirements for valves intended for uses other than the control of
water for tap and shower outlets . 44
Table CC.2 – Test requirements for valves intended for the control of water for tap and
shower outlets . 45
Table DD.1.2.1 – Required torque for test . 47
Table DD.6 DD.2 – Tightening torque in newton metres (Nm) for bolts and screws for
adaptors . 48
– 4 – IEC 60730-2-8:2018 RLV © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL
CONTROLS FOR HOUSEHOLD AND SIMILAR USE –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
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agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
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3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
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4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
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between any IEC Publication and the corresponding national or regional publication shall be clearly indicated in
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5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
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6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
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8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of
patent rights. IEC shall not be held responsible for identifying any or all such patent rights.
This redline version of the official IEC Standard allows the user to identify the changes
made to the previous edition. A vertical bar appears in the margin wherever a change
has been made. Additions are in green text, deletions are in strikethrough red text.
International Standard IEC 60730-2-8 has been prepared by IEC technical committee 72:
Automatic electrical controls.
This third edition cancels and replaces the second edition published in 2000,
Amendment 1:2002 and its Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• alignment of the text with IEC 60730-1 fifth edition (2013) including Amendment 1:2015;
• introduction of specific requirements for thermoplastic bodied valves for the control of
water for tap and shower outlets (18.101.4.3 and Annex CC);
• removal of Subclause 18.102 Wetted material specifications.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The text of this International Standard is based on the following documents:
CDV Report on voting
72/1077/CDV 72/1120/RVC
Full information on the voting for the approval of this International Standard can be found in
the report on voting indicated in the above table.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2-8 is intended to be used in conjunction with IEC 60730-1. It was established on
the basis of the fifth edition (2013) including Amendment 1 (2015) of that publication.
This part 2-8 supplements or modifies the corresponding clauses in IEC 60730-1 so as to
convert that publication into the IEC standard: Safety requirements for electrically operated
water valves, including mechanical requirements.
Where this part 2-8 states "addition", "modification" or "replacement", the relevant
requirement, test specification or explanatory matter in part 1 should be adapted accordingly.
Where no change is necessary, part 2-8 indicates that the relevant clause or subclause
applies.
In the development of a fully international standard, it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
The "in some countries" notes regarding differing national practices are contained in the following elements:
– Table 1, footnotes ab and ac
– Table 13, footnote aa
– 1.1.4
– 16.2.1
– 18.101.3
– 27.2.3.1
– 27.101
– Table DD. 1, footnote a
– Table DD.2, footnote a
– 6 – IEC 60730-2-8:2018 RLV © IEC 2018
In this publication:
1) The following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Notes: in smaller roman type.
– Defined terms: in bold type
2) Subclauses, notes, tables or figures which are additional to those in part 1 are numbered
starting from 101, additional annexes are lettered AA, BB, etc.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The “colour inside” logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this publication using a colour printer.
AUTOMATIC ELECTRICAL
CONTROLS FOR HOUSEHOLD AND SIMILAR USE –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
1 Scope and normative references
This clause of Part 1 is replaced applicable except as follows:
1.1 Scope
Replacement:
1.1 This part 2-8 applies to electrically operated water valves for use in, on or in association
with equipment for household and similar use that may use electricity, gas, oil, solid fuel,
solar thermal energy, etc. or a combination thereof, including heating, air-conditioning and
similar applications.
This part 2-8 is also applicable to electrically operated water valves for appliances within the
scope of IEC 60335.
1.1.1 This part 2-8 contains requirements for electrical features of water valves and
requirements for mechanical features of valves that affect their intended operation.
1.1.2 This part 2-8 applies to the inherent safety, to the operating values, operating
sequences where such are associated with equipment protection, and to the testing of
automatic electrical controls used in, on or in association with household and similar
equipment.
Electrically operated valves for equipment not intended for normal household use but which
may nevertheless be used by the public, such as equipment intended to be used by laymen in
shops, in light industry and on farms, are within the scope of this part 2-8.
This part 2-8 does not apply to electrically operated water valves designed exclusively for
industrial applications.
This part of IEC 60730 applies to electrically operated water valves for use in, on or in
association with equipment for household and similar use, including heating, air-conditioning
and similar applications. The equipment can use electricity, gas, oil, solid fuel, solar thermal
energy, etc., or a combination thereof.
NOTE 1 Throughout this document, the word "equipment" means "appliances and equipment."
This document is applicable to electrically operated water valves for building automation
within the scope of ISO 16484.
This document also applies to automatic electrically operated water valves for equipment that
can be used by the public, such as equipment intended to be used in shops, offices, hospitals,
farms and commercial and industrial applications.
EXAMPLE 1: Electrically operated water valves for commercial catering, heating and air-conditioning equipment.
– 8 – IEC 60730-2-8:2018 RLV © IEC 2018
This document does not apply to electrically operated water valves intended exclusively for
industrial process applications unless explicitly mentioned in the relevant equipment standard.
This document applies to electrically operated water valves powered by primary or secondary
batteries, requirements for which are contained within the standard, including Annex V.
This document does not cover the prevention of contamination of drinking water as a result of
contact with materials.
1.1.1 This document applies to the inherent safety, to the operating values, operating times
and operating sequences where such are associated with equipment safety, and to the testing
of automatic electrical control devices used in, on or in association with, household and
similar equipment.
This document contains requirements for electrical features of water valves and requirements
for mechanical features of valves that affect their intended operation.
This document is also applicable to electrically operated water valves for appliances within
the scope of the IEC 60335 series of standards.
This document does not apply to:
– electrically operated water valves of nominal connection size above DN 50;
– electrically operated water valves for admissible nominal pressure rating above 1,6 MPa;
– food dispensers;
– detergent dispensers;
– steam valves;
– electrically operated water valves designed exclusively for industrial applications.
Throughout this document, where it can be used unambiguously, the term:
– "valve" is used to denote an electrically operated water valve (including actuator and valve
body assembly);
– "actuator" means "electrically operated mechanism or prime mover";
– "valve body" means "valve body assembly";
– "equipment" includes "appliance" and "control system".
1.1.2 This document applies to electrically operated water valves, responsive to or
controlling such characteristics as temperature, pressure, passage of time, humidity, light,
electrostatic effects, flow, or liquid level, current, voltage, acceleration, or combinations
thereof.
1.1.3 This document also applies to actuators and to valve bodies which are designed to be
fitted to each other.
1.1.4 This document applies to individual valves, valves utilized as part of a system and
valves mechanically integral with multi-functional controls having non-electrical outputs.
NOTE Attention is drawn to the fact that, in many countries, additional test requirements and by-laws have been
established by the water authorities or companies.
1.1.5 This document applies to AC or DC powered electrically operated water valves with a
rated voltage not exceeding 690 V AC or 600 V DC.
1.1.6 This document does not take into account the response value of an automatic action
of a valve, if such a response value is dependent upon the method of mounting the valve in
the equipment. Where a response value is of significant purpose for the protection of the
user, or surroundings, the value defined in the appropriate equipment standard or as
determined by the manufacturer shall apply.
1.1.7 This document applies also to electrically operated water valves incorporating
electronic devices, requirements for which are contained in Annex H.
1.1.8 This document applies also to electrically operated water valves using NTC or PTC
thermistors, requirements for which are contained in Annex J.
1.1.9 This document applies to the electrical and functional safety of electrically operated
water valves capable of receiving and responding to communications signals, including
signals for power billing rate and demand response.
The signals can be transmitted to or received from external units being part of the valve
(wired), or to and from external units which are not part of the valve (wireless) under test.
1.1.10 This document does not address the integrity of the output signal to the network
devices, such as interoperability with other devices unless it has been evaluated as part of the
control system.
1.2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads – Part 1:
Dimensions, tolerances and designation
ISO 65:1981, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 228-1:1994, Pipe threads where pressure-tight joints are not made on the threads –
Part 1: Dimensions, tolerances and designation
ISO 630:1995, Structural steels – Plates, wide flats, bars sections and profiles
ISO 1179:1981, Pipe connections threaded to ISO 228-1 for plain end steel and other metal
tubes in industrial applications
ISO 1179-1, Connections for general use and fluid power – Ports and stud ends with
ISO 228-1 threads with elastomeric or metal-to-metal sealing – Part 1: Threaded ports
ISO 4144:1979, Pipework – Stainless steel fittings threaded to in accordance with ISO 7-1
ISO 4400:1994, Fluid power systems and components – Three-pin electrical plug connectors
with earth contact – Characteristics and requirements
ISO 6952:1994, Fluid power systems and components – Two-pin electrical plug connectors
with earth contact – Characteristics and requirements
ISO 630 has been withdrawn.
– 10 – IEC 60730-2-8:2018 RLV © IEC 2018
2 Terms and definitions
This clause of Part 1 is applicable, except as follows:
2.2 Definitions of types of control according to purpose
2.2.17
electrically operated valve
Addition:
Note 1 to entry: A semi-automatic valve that is opened manually and closes automatically or vice versa is also
covered by this definition.
Additional definitions:
2.2.17.101
valve
device consisting of an actuator connected to a valve body assembly and used to stop or
regulate the flow of fluid by the closure or partial closure of an orifice
2.2.17.102
water valve
valve intended to be connected to a water supply and to control water flow
NOTE A water valve is a type 1 action. Switching devices incorporated in water valves are type 1 or 2 actions.
2.2.17.103
heating-water valve
valve intended to control the water circulation in heating systems
2.2.17.104
actuator
electrically operated mechanism or prime mover used to effect the opening or closing action
of a valve
Note 1 to entry: An actuator may be integral with the valve, fixed to the valve body assembly or delivered as a
separate component.
Note 2 to entry: An actuator may also include the valve and closure member.
2.2.17.105
valve body assembly
assembly comprising the valve body, inlet and outlet end connections, the valve seat, closure
member and stem or shaft
Note 1 to entry: In some cases, the stem and closure member may be part of the actuator.
2.2.17.106
valve body
part of the valve body assembly which is the main pressure boundary
Note 1 to entry: It provides the water flow passage-ways with end connections.
2.2.17.107
nominal size
numerical designation of size which is common to all components in a fluid-conducting system
other than components designated by outside diameter or by thread size
Note 1 to entry: It may be designated by "DN" followed by a convenient round number, for reference purposes
only.
Note 2 to entry: Some older international standards refer to nominal size as nominal diameter but, for the purpose
of this document, the two terms are synonymous.
2.2.17.108
nominal pressure rating
numerical designation of pressure rating
Note 1 to entry: It may be designated by the letters "PN" (also referred to as the pressure number) followed by a
convenient round number, for reference purposes only.
2.2.17.109
end connection
valve body configuration provided to make a pressure-tight joint to the fluid-conducting
system
2.2.17.110
valve seat
surface of the orifice within the valve which makes full contact with the closure member
2.2.17.111
closure member
movable part of the valve which is positioned in the flow path to modify the rate of flow
through the valve
Note 1 to entry: A closure member may be a plug, ball, disc, vane, gate, etc.
2.2.17.112
stem
component which connects the actuator to, and positions, the closure member
Note 1 to entry: For rotary valves, the word "shaft" should be used in place of "stem".
Note 2 to entry: In some controls, the stem may be part of the actuator.
2.2.17.113
fitting
any device such as a reducer, expander, elbow, or T-piece which is attached directly to an
end-connection of the valve body assembly
2.3 Definitions relating to the function of controls
2.3.29
maximum working pressure
Modification:
Delete “maximum rated pressure”.
Additional definitions:
2.3.101
on-off valve
valve which is open or closed, without any intermediate positions
2.3.102
normally closed valve
valve which is closed when not electrically energized
2.3.103
normally open valve
valve which is open when not electrically energized
– 12 – IEC 60730-2-8:2018 RLV © IEC 2018
2.3.104
modulating valve
valve which has a variable flow rate between predetermined flow limits
2.3.105
diverting valve
valve with one or more inputs and outputs which may permit flow from any combination of
inputs to outputs
2.3.106
closed position
position of the closure member when there is no water flow from the outlet side of the valve
2.3.107
travel
displacement of the closure member from the closed position
2.3.108
rated travel
displacement of the closure member from the closed position to the full open position
2.3.109
open position
position of the closure member when there is a flow of water from the outlet side of the valve
2.3.110
fully open position
position of the closure member so that the amount of water flowing through the valve is in
accordance with the rated flow rate
2.3.111
flow rate
volume of water flowing through the valve in unit time
2.3.112
rated flow rate
flow rate at the rated travel under standard reference conditions of temperature and pressure
declared at a given pressure difference
2.3.113
flow factor
factor specifying the amount of water which can pass through the valve at a specified
pressure difference
Note 1 to entry: The flow factor may be referred to as flow coefficient.
Note 2 to entry: The relationship between the different flow factors in use is indicated in Annex AA.
2.3.114
maximum operating pressure differential
declared maximum difference in pressure between inlet and outlet ports of the valve against
which the actuator can operate the closure member
2.3.115
minimum operating pressure differential
declared minimum pressure difference at which the valve opens or closes
2.3.116
Void
2.3.117
water hammer
excessive transient pressure which can occur in some water supply systems as a result of
closing a valve as intended
2.3.118
transient pressure
short-time pressure surge exceeding the normal stable supply pressure in the closed
condition of the valve
2.3.119
valve with anti-water-hammer characteristics
valve that does not cause an excessive pressure drop when opening and no excessive
transient pressure when closing if connected directly, without special precautions to water
supply mains applications where water-hammer may occur
2.13 Miscellaneous definitions
Additional definitions:
2.13.101
drinking-water
water supply which is intended to be suitable for human consumption
NOTE In some standards, “drinking-water” is referred to as “potable water”.
Void
2.13.102
non-drinking-water
water supply which is not intended for human consumption
Void
2.13.103
water for tap and shower outlets
water intended to supply a bath, shower, bidet, wash basin, kitchen sink, or other such taps
that discharge in to a drainage system
3 General requirements
This clause of Part 1 is applicable.
4 General notes on tests
This clause of Part 1 is applicable, except as follows:
4.1 Conditions of test
4.1.2 Addition:
Unless otherwise specified in this document, water temperature for the tests shall be
maintained at a temperature of (20 ± 5) °C.
4.2 Samples required
– 14 – IEC 60730-2-8:2018 RLV © IEC 2018
4.2.1 Addition:
One sample is required for each test of Clause 27.
NOTE 101 By agreement between manufacturer and testing authority, one sample may can be submitted to more
than one test.
5 Rating
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable, except as follows:
6.3.12 – electrically operated valve;
Additional subclause:
6.3.12.101 – water valve;
6.5.2 According to degree of protection provided by enclosures against harmful ingress of
water (see IEC 60529)
Replacement of the second explanatory paragraph Note as follows:
NOTE 2 Preferred degrees of protection provided by enclosures are: IP20, IP30, IP40, IP54, IP65.
Values differing from these preferred values are allowed.
6.7 According to ambient temperature limits of the switch head
Modification:
In 6.7.1 and 6.7.2, read "valve" for "control" and "actuator" for "switch head".
6.8 According to protection against electric shock
6.8.3 Replacement:
For an independently mounted valve or a valve integrated or incorporated in an assembly
utilizing a non-electrical source:
Additional subclauses:
6.8.101 For a single actuator:
6.8.101.1 – of class 0;
6.8.101.2 – of class 0I;
6.8.101.3 – of class I;
6.8.101.4 – of class II;
6.8.101.5 – of class III.
6.10 Not applicable.
6.11 According to number of automatic cycles 6.11 (A) of each automatic action
Addition:
Water valves shall be subjected to a minimum of 6 000 automatic cycles.
Additional subclauses:
6.101 According to type of end-connections
6.101.1 Valves provided with internally threaded end-connections with either:
a) ISO 7-1 or NPT thread when pressure-tight joints are made on the thread, or
b) ISO 228-1 thread when pressure-tight joints are not made on the thread, but via an
additional sealing washer.
6.101.2 Valves provided with externally threaded end-connections for:
a) compression fittings, or
b) washered union connection, or
c) cone seated union connection, or
d) threaded pipe connections either according to ISO 7-1, ISO 228-1 or NPT thread.
6.101.3 Valves provided with flanged end-connections suitable for connection to flanges with
or without adaptors.
6.101.4 Valves provided with end-connections with neck-end for soldered or welded
connections.
6.101.5 Valves provided with end-connections with hose tails for use with flexible tubing.
6.102 According to features of electrically operated water valves
6.102.1 According to the size and capacity:
Size and capacity to be specified in dimension of inlet and outlet connections and flow factor.
6.102.2 According to the type of operation:
Direct or pilot controlled with or without minimum pressure differential limit.
6.102.3 According to function:
Description of function regarding the number of water connections and the valve position
when de-energized.
6.102.4 According to material of wetted parts:
Includes the material identification of all internal parts in contact with water such as the body
and the sealing material.
6.102.5 According to construction of the closure member:
The valve may be a direct operated or pilot valve controlled diaphragm or piston-operated
poppet type or spool type closing member.
– 16 – IEC 60730-2-8:2018 RLV © IEC 2018
6.102.6 According to construction of the actuator:
Examples are: electromagnetic; electric motor; electrically heated wax or bi-metal controlled
actuator with actuator stem in contact with or shielded from the water.
6.103 According to temperature, pressure and type of the water controlled
Valves for controlling:
6.103.1 Cold drinking-water supply with a maximum temperature of 25 °C;
6.103.2 Hot drinking-water supply with a maximum temperature of 90 °C;
6.103.3 Cold non-drinking-water supply with a maximum temperature of 25 °C; Void
6.103.4 Hot non-drinking-water supply with a maximum temperature of 90 °C; Void
6.103.5 Circulation heating water with a maximum temperature of between 50 °C and 120 °C;
Replacement:
6.103.6 Water with a maximum rated temperature other than indicated above;
6.103.7 Water flow in systems with a maximum pressure of 0,1 MPa;
6.103.8 Water flow in systems with a maximum pressure of 0,6 MPa;
6.103.9 Water flow in systems with a maximum pressure of 0,86 MPa;
6.103.10 Water flow in systems with a maximum pressure of 1,0 MPa;
6.103.11 Water flow in systems with a maximum pressure of 1,6 MPa;
Additional subclause:
6.103.12 Water flow in systems with a maximum system pressure other than indicated above.
6.104 According to nominal size and thread size of end connections
The nominal size and the thread size of end connections are given in Table 101.
Table 101 – Nominal size and thread size of end connections
Designation of thread (inch) Nominal size
1/8 DN 6
1/4 DN 8
3/8 DN 10
1/2 DN 15
3/4 DN 20
1 DN 25
1 ¼ DN 32
1 ½ DN 40
2 DN 50
NOTE The designation "DN" followed by the appropriate convenient round number
is normally only loosely related to manufacturing dimensions and corresponds for
reference purposes only approximately to the internal diameter expressed in
millimetres of the water system.
7 Information
This clause of Part 1 is applicable, except as follows:
Table 7.2
Modification:
Replace the following items by:
Require- Information Clause or Method
ment subclause
7 The type of load controlled by each circuit (for valves with switching 6.2, 14, 17, C
7)
devices)
22 Temperature limits of the actuator, if T lower than 0 °C, or T other 6.7, 14.5, D
min max
than 55 °C 14.7, 17.3
23 Not applicable
26 Not applicable
28 Not applicable
29 Type of disconnection or interruption provided by each circuit (for valves 6.9 X
with switching devices)
36 to 38 Not applicable
101)
39 Type 1 or type 2 action (for valves with switching devices) 6.4 D
40 Additional features of type 1 or type 2 actions (for valves with switching 6.4.3 D
101)
devices)
41 Manufacturing deviation and condition of test appropriate to deviation (for 11.4.3, 15, X
valves with switching devices) 17.14
42 Drift (for valves with switching devices) 11.4.3, 15 X
43 to 44 Not applicable
46 to 48 Not applicable
49 Control pollution situation of actuator 6.5.3 D
– 18 – IEC 60730-2-8:2018 RLV © IEC 2018
Add the following additional items:
Require- Information Clause or Method
ment subclause
101 Power consumption in watts or in VA or current rating C
102 Maximum operating pressure differential in MPa (or in bar) 2.3.114 D
103 Minimum operating pressure differential in MPa (or in bar) 2.3.115 D
104 Maximum working pressure in MPa (or in bar) 2.3.116, D
6.103
105 Flow direction indicated by an arrow (on valve body) C
106 Maximum water temperature in °C 6.103 D
107 Suitable for drinking-water or non-drinking-water 6.103, 18.102 D
108 For valves intended to be cleaned in normal use, the method of 18.1.101 D
disassembling, cleaning, reassembling and maintenance
109 If valve is intended to be used in water supply installations where water 18.101.3 X
hammer may occur and test method per annex AA or EE
110 Material identification of wetted parts 6.102.4 X
111 Valve features 6.101, 6.102 D
112 Plastic valves intended to be hand-tightened 18.103.5 D
101)
The water valve itself is type 1 action.
Table 1 – Required information and methods of providing information
Modification:
Replace the following items by:
Information Clause or Method
subclause
7 The type of load controlled by each circuit (for valves with switching 6.2, 14, 17, C
b
devices) 23.1.1
22 Temperature limits of the actuator, if T lower than 0 °C, or T 6.7, 14.5, D
min max
other than 55 °C 14.7, 17.3
26 Not applicable
28 Not applicable
29 Type of disconnection or interruption provided by each circuit (for 6.9, 2.4 X
valves with switching devices)
36 to 38 Not applicable
aa
39 Type 1 or type 2 action (for valves with switching devices) 6.4 D or E
40 Additional features of type 1 or type 2 actions (for valves with switching 6.4.3, 11.4 D or E
aa
devices)
41 Manufacturing deviation and condition of test appropriate to deviation 11.4.3, 15, X
(for valves with switching devices) 17.14, 2.11.1
42 Drift (for valves with switching devices) 11.4.3, 15, X
2.11.2
43 to 44 Not applicable
47 Not applicable
49 Control pollution situation of actuator 6.5.3 D or E
Add the following additional items:
Information Clause or Method
subclause
101 Power consumption in watts or in VA or current rating C
102 Maximum operating pressure differential in MPa (or in bar) 2.3.114 D
103 Minimum operating pressure differential in MPa (or in bar) 2.3.115 D
104 Maximum working pressure in MPa (or in bar) 2.3.29, 6.103 D
105 Flow direction indicated by an arrow (on valve body) C
106 Maximum water temperature in °C 6.103 D
107 Void
108 For valves intended to be cleaned in normal use, the method of 18.1.101 D
disassembling, cleaning, reassembling and maintenance
109 If valve is intended to be used in water supply installations where water 18.101.3 X
hammer may occur
110 Material identification of wetted parts 6.102.4 X
111 Valve features 6.101, 6.102 D
112 Plastic valves intended to be hand-tightened 18.103.5 D
113 Valves incorporated in those household appliances covered by the 14.5.107, D
IEC 60335 series where the loss of water supply or dry valve is 27.101
ab
considered as an abnormal use condition
114 For valves identified under item 113, details of any limitation of 27.101.2 D
ac
operating time (duty cycle)
115 Water valve intended to be used in accordance with IEC 60335 18.101.3 D
116 If the valve is intended to be used for the control of water for tap and 2.13.103 D
shower outlets 18.101.4
aa
The water valve itself is type 1 action.
ab
Not applicable in Canada, Japan and the USA.
ac
Not applicable in Canada, Japan, and the USA.
7.4 Additional requirements for marking
This clause of Part 1 is applicable except as follows:
7.4.4 Not applicable.
Add the following note:
NOTE This is not applicable to seals, O-rings, springs, and the like.
8 Protection against electric shock
This clause of Part 1 is applicable, except as follows:
8.1.4 Addition:
For class II water valves, reinforced insulation shall not be in direct contact with the water.
Additional subclause:
– 20 – IEC 60730-2-8:2018 RLV © IEC 2018
8.1.101 Valves which are declared capable of being cleaned in normal use shall be so
constructed that there is adequate protection against accidental contact with live parts during
cleaning.
Compliance is checked by inspection and by a simulated cleaning operation as described
below:
If the actuator can be removed from the valve body assembly without disconnecting the
electrical wiring, the removed actuator shall still meet the requirements for its class of
construction. Removal s
...
IEC 60730:2018+AMD1:2021 CSV/ – 1 –
COR1:2022 IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
COMMISSION ÉLECTROTECHNIQUE INTERNATIONALE
____________
IEC 60730-2-8 IEC 60730-2-8
Edition 3.1 2021-10 Edition 3.1 2021-10
AUTOMATIC ELECTRICAL CONTROLS – DISPOSITIFS DE COMMANDE ÉLECTRIQUE
AUTOMATIQUES –
Part 2-8: Particular requirements for electrically
operated water valves, Partie 2-8: Exigences particulières pour les
including mechanical requirements électrovannes hydrauliques,
y compris les exigences mécaniques
CO RRI G E NDUM 1
Corrections to the French version appear after the English text.
Les corrections à la version française sont données après le texte anglais.
Annex DD (normative) Torque
Table DD.1 – Required torque for test
Cancel replacement of the title of the fourth column so that the original
...
IEC 60730-2-8 ®
Edition 3.0 2018-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Automatic electrical controls –
Part 2-8: Particular requirements for electrically operated water valves, including
mechanical requirements
Dispositifs de commande électrique automatiques —
Partie 2-8: Exigences particulières pour les électrovannes hydrauliques,
y compris les exigences mécaniques
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IEC 60730-2-8 ®
Edition 3.0 2018-08
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
Automatic electrical controls –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
Dispositifs de commande électrique automatiques —
Partie 2-8: Exigences particulières pour les électrovannes hydrauliques,
y compris les exigences mécaniques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.120 ISBN 978-2-8322-6423-2
– 2 – IEC 60730-2-8:2018 © IEC 2018
CONTENTS
FOREWORD . 4
1 Scope and normative references . 7
2 Terms and definitions . 9
3 General requirements . 13
4 General notes on tests . 13
5 Rating. 13
6 Classification . 13
7 Information . 16
8 Protection against electric shock . 17
9 Provision for protective earthing . 18
10 Terminals and terminations . 18
11 Constructional requirements . 19
12 Moisture and dust resistance . 19
13 Electric strength and insulation resistance . 19
14 Heating . 20
15 Manufacturing deviation and drift . 21
16 Environmental stress . 21
17 Endurance . 22
18 Mechanical strength . 23
19 Threaded parts and connections . 26
20 Creepage distances, clearances and distances through insulation . 26
21 Resistance to heat, fire and tracking . 26
22 Resistance to corrosion . 26
23 Electromagnetic compatibility (EMC) requirements – Emission . 26
24 Components . 26
25 Normal operation . 26
26 Electromagnetic compatibility (EMC) requirements – Immunity . 27
27 Abnormal operation . 27
28 Guidance on the use of electronic disconnection . 30
Annex H (normative) Requirements for electronic controls . 31
Annex AA (informative) Relation between different flow coefficients . 36
Annex BB (normative) Arrangement for the measurement of transient pressures
caused by water valves . 37
Annex CC (normative) . 40
Annex DD (normative) Torque . 42
Annex EE (normative) Arrangement for the measurement of transient pressures
caused by water valves with a declared pressure of up to and including 1,0 MPa (10
bar) . 46
Bibliography . 48
Figure BB.1 – Transient pressure measurement test rig schematic diagram . 38
Figure DD.1 – Arrangements for carrying out the torque test . 42
Figure EE.1 – Transient pressure measurement test rig for valves with a declared
pressure of up to and including 1,0 MPa (10 bar) schematic diagram . 46
Table 101 – Nominal size and thread size of end connections. 16
Table 1 – Required information and methods of providing information . 16
Table 102 – Torque test requirement for metal valves with internal threaded end-
connections . 25
Table 103 – Torque test requirement for metal valves with external threaded end-
connections . 25
Table 104 – Maximum winding temperature (for test of blocked output conditions and
valves declared under Table 1, item 113) . 28
Table CC.1 – Test requirements for valves intended for uses other than the control of
water for tap and shower outlets . 40
Table CC.2 – Test requirements for valves intended for the control of water for tap and
shower outlets . 41
Table DD.1 – Required torque for test . 43
Table DD.2 – Tightening torque in newton metres (Nm) for bolts and screws for
adaptors . 44
– 4 – IEC 60730-2-8:2018 © IEC 2018
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
FOREWORD
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
International Standard IEC 60730-2-8 has been prepared by IEC technical committee 72:
Automatic electrical controls.
This bilingual version (2019-03) corresponds to the monolingual English version, published in
2018-08.
This third edition cancels and replaces the second edition published in 2000,
Amendment 1:2002 and its Amendment 2:2015. This edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• alignment of the text with IEC 60730-1 fifth edition (2013) including Amendment 1:2015;
• introduction of specific requirements for thermoplastic bodied valves for the control of water
for tap and shower outlets (18.101.4.3 and Annex CC);
• removal of Subclause 18.102 Wetted material specifications.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
The text of this International Standard is based on the following documents:
CDV Report on voting
72/1077/CDV 72/1120/RVC
Full information on the voting for the approval of this International Standard can be found in the
report on voting indicated in the above table.
The French version of this standard has not been voted upon.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This part 2-8 is intended to be used in conjunction with IEC 60730-1. It was established on the
basis of the fifth edition (2013) including Amendment 1 (2015) of that publication.
This part 2-8 supplements or modifies the corresponding clauses in IEC 60730-1 so as to
convert that publication into the IEC standard: Safety requirements for electrically operated
water valves, including mechanical requirements.
Where this part 2-8 states "addition", "modification" or "replacement", the relevant requirement,
test specification or explanatory matter in part 1 should be adapted accordingly.
Where no change is necessary, part 2-8 indicates that the relevant clause or subclause applies.
In the development of a fully international standard, it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
The "in some countries" notes regarding differing national practices are contained in the following elements:
– Table 1, footnotes ab and ac
– Table 13, footnote aa
– 1.1.4
– 16.2.1
– 18.101.3
– 27.2.3.1
– 27.101
– Table DD. 1, footnote a
– Table DD.2, footnote a
In this publication:
1) The following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Notes: in smaller roman type.
– Defined terms: in bold type
2) Subclauses, notes, tables or figures which are additional to those in part 1 are numbered
starting from 101, additional annexes are lettered AA, BB, etc.
– 6 – IEC 60730-2-8:2018 © IEC 2018
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to
the specific document. At this date, the document will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
1 Scope and normative references
This clause of Part 1 is applicable except as follows:
1.1 Scope
Replacement:
This part of IEC 60730 applies to electrically operated water valves for use in, on or in
association with equipment for household and similar use, including heating, air-conditioning
and similar applications. The equipment can use electricity, gas, oil, solid fuel, solar thermal
energy, etc., or a combination thereof.
NOTE 1 Throughout this document, the word "equipment" means "appliances and equipment."
This document is applicable to electrically operated water valves for building automation within
the scope of ISO 16484.
This document also applies to automatic electrically operated water valves for equipment that
can be used by the public, such as equipment intended to be used in shops, offices, hospitals,
farms and commercial and industrial applications.
EXAMPLE 1: Electrically operated water valves for commercial catering, heating and air-conditioning equipment.
This document does not apply to electrically operated water valves intended exclusively for
industrial process applications unless explicitly mentioned in the relevant equipment standard.
This document applies to electrically operated water valves powered by primary or secondary
batteries, requirements for which are contained within the standard, including Annex V.
This document does not cover the prevention of contamination of drinking water as a result of
contact with materials.
1.1.1 This document applies to the inherent safety, to the operating values, operating times
and operating sequences where such are associated with equipment safety, and to the testing
of automatic electrical control devices used in, on or in association with, household and similar
equipment.
This document contains requirements for electrical features of water valves and requirements
for mechanical features of valves that affect their intended operation.
This document is also applicable to electrically operated water valves for appliances within the
scope of the IEC 60335 series of standards.
This document does not apply to:
– electrically operated water valves of nominal connection size above DN 50;
– electrically operated water valves for admissible nominal pressure rating above 1,6 MPa;
– 8 – IEC 60730-2-8:2018 © IEC 2018
– food dispensers;
– detergent dispensers;
– steam valves;
– electrically operated water valves designed exclusively for industrial applications.
Throughout this document, where it can be used unambiguously, the term:
– "valve" is used to denote an electrically operated water valve (including actuator and valve
body assembly);
– "actuator" means "electrically operated mechanism or prime mover";
– "valve body" means "valve body assembly";
– "equipment" includes "appliance" and "control system".
1.1.2 This document applies to electrically operated water valves, responsive to or controlling
such characteristics as temperature, pressure, passage of time, humidity, light, electrostatic
effects, flow, or liquid level, current, voltage, acceleration, or combinations thereof.
1.1.3 This document also applies to actuators and to valve bodies which are designed to be
fitted to each other.
1.1.4 This document applies to individual valves, valves utilized as part of a system and valves
mechanically integral with multi-functional controls having non-electrical outputs.
NOTE Attention is drawn to the fact that, in many countries, additional test requirements and by-laws have been
established by the water authorities or companies.
1.1.5 This document applies to AC or DC powered electrically operated water valves with a
rated voltage not exceeding 690 V AC or 600 V DC.
1.1.6 This document does not take into account the response value of an automatic action
of a valve, if such a response value is dependent upon the method of mounting the valve in
the equipment. Where a response value is of significant purpose for the protection of the user,
or surroundings, the value defined in the appropriate equipment standard or as determined by
the manufacturer shall apply.
1.1.7 This document applies also to electrically operated water valves incorporating
electronic devices, requirements for which are contained in Annex H.
1.1.8 This document applies also to electrically operated water valves using NTC or PTC
thermistors, requirements for which are contained in Annex J.
1.1.9 This document applies to the electrical and functional safety of electrically operated
water valves capable of receiving and responding to communications signals, including signals
for power billing rate and demand response.
The signals can be transmitted to or received from external units being part of the valve (wired),
or to and from external units which are not part of the valve (wireless) under test.
1.1.10 This document does not address the integrity of the output signal to the network devices,
such as interoperability with other devices unless it has been evaluated as part of the control
system.
1.2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads – Part 1:
Dimensions, tolerances and designation
ISO 65:1981, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads – Part 1:
Dimensions, tolerances and designation
ISO 630, Structural steels – Plates, wide flats, bars sections and profiles
ISO 1179-1, Connections for general use and fluid power – Ports and stud ends with
ISO 228-1 threads with elastomeric or metal-to-metal sealing – Part 1: Threaded ports
ISO 4144, Pipework – Stainless steel fittings threaded in accordance with ISO 7-1
2 Terms and definitions
This clause of Part 1 is applicable, except as follows:
2.2 Definitions of types of control according to purpose
2.2.17
electrically operated valve
Addition:
Note 1 to entry: A semi-automatic valve that is opened manually and closes automatically or vice versa is also
covered by this definition.
Additional definitions:
2.2.17.101
valve
device consisting of an actuator connected to a valve body assembly and used to stop or
regulate the flow of fluid by the closure or partial closure of an orifice
2.2.17.102
water valve
valve intended to be connected to a water supply and to control water flow
2.2.17.103
heating-water valve
valve intended to control the water circulation in heating systems
2.2.17.104
actuator
electrically operated mechanism or prime mover used to effect the opening or closing action of
a valve
ISO 630 has been withdrawn.
– 10 – IEC 60730-2-8:2018 © IEC 2018
Note 1 to entry: An actuator may be integral with the valve, fixed to the valve body assembly or delivered as a
separate component.
Note 2 to entry: An actuator may also include the valve and closure member.
2.2.17.105
valve body assembly
assembly comprising the valve body, inlet and outlet end connections, the valve seat, closure
member and stem or shaft
Note 1 to entry: In some cases, the stem and closure member may be part of the actuator.
2.2.17.106
valve body
part of the valve body assembly which is the main pressure boundary
Note 1 to entry: It provides the water flow passage-ways with end connections.
2.2.17.107
nominal size
numerical designation of size which is common to all components in a fluid-conducting system
other than components designated by outside diameter or by thread size
Note 1 to entry: It may be designated by "DN" followed by a convenient round number, for reference purposes only.
Note 2 to entry: Some older international standards refer to nominal size as nominal diameter but, for the purpose
of this document, the two terms are synonymous.
2.2.17.108
nominal pressure rating
numerical designation of pressure rating
Note 1 to entry: It may be designated by the letters "PN" (also referred to as the pressure number) followed by a
convenient round number, for reference purposes only.
2.2.17.109
end connection
valve body configuration provided to make a pressure-tight joint to the fluid-conducting system
2.2.17.110
valve seat
surface of the orifice within the valve which makes full contact with the closure member
2.2.17.111
closure member
movable part of the valve which is positioned in the flow path to modify the rate of flow through
the valve
Note 1 to entry: A closure member may be a plug, ball, disc, vane, gate, etc.
2.2.17.112
stem
component which connects the actuator to, and positions, the closure member
Note 1 to entry: For rotary valves, the word "shaft" should be used in place of "stem".
Note 2 to entry: In some controls, the stem may be part of the actuator.
2.2.17.113
fitting
any device such as a reducer, expander, elbow, or T-piece which is attached directly to an end-
connection of the valve body assembly
2.3 Definitions relating to the function of controls
2.3.29
maximum working pressure
Modification:
Delete “maximum rated pressure”.
Additional definitions:
2.3.101
on-off valve
valve which is open or closed, without any intermediate positions
2.3.102
normally closed valve
valve which is closed when not electrically energized
2.3.103
normally open valve
valve which is open when not electrically energized
2.3.104
modulating valve
valve which has a variable flow rate between predetermined flow limits
2.3.105
diverting valve
valve with one or more inputs and outputs which may permit flow from any combination of inputs
to outputs
2.3.106
closed position
position of the closure member when there is no water flow from the outlet side of the valve
2.3.107
travel
displacement of the closure member from the closed position
2.3.108
rated travel
displacement of the closure member from the closed position to the full open position
2.3.109
open position
position of the closure member when there is a flow of water from the outlet side of the valve
2.3.110
fully open position
position of the closure member so that the amount of water flowing through the valve is in
accordance with the rated flow rate
2.3.111
flow rate
volume of water flowing through the valve in unit time
– 12 – IEC 60730-2-8:2018 © IEC 2018
2.3.112
rated flow rate
flow rate at the rated travel under standard reference conditions of temperature and pressure
declared at a given pressure difference
2.3.113
flow factor
factor specifying the amount of water which can pass through the valve at a specified pressure
difference
Note 1 to entry: The flow factor may be referred to as flow coefficient.
Note 2 to entry: The relationship between the different flow factors in use is indicated in Annex AA.
2.3.114
maximum operating pressure differential
declared maximum difference in pressure between inlet and outlet ports of the valve against
which the actuator can operate the closure member
2.3.115
minimum operating pressure differential
declared minimum pressure difference at which the valve opens or closes
2.3.116
Void
2.3.117
water hammer
excessive transient pressure which can occur in some water supply systems as a result of
closing a valve as intended
2.3.118
transient pressure
short-time pressure surge exceeding the normal stable supply pressure in the closed condition
of the valve
2.3.119
valve with anti-water-hammer characteristics
valve that does not cause an excessive pressure drop when opening and no excessive transient
pressure when closing if connected directly, without special precautions to water supply mains
applications where water-hammer may occur
2.13 Miscellaneous definitions
Additional definitions:
2.13.101
Void
2.13.102
Void
2.13.103
water for tap and shower outlets
water intended to supply a bath, shower, bidet, wash basin, kitchen sink, or other such taps
that discharge in to a drainage system
3 General requirements
This clause of Part 1 is applicable.
4 General notes on tests
This clause of Part 1 is applicable, except as follows:
4.1 Conditions of test
4.1.2 Addition:
Unless otherwise specified in this document, water temperature for the tests shall be maintained
at a temperature of (20 ± 5) °C.
4.2 Samples required
4.2.1 Addition:
One sample is required for each test of Clause 27.
NOTE 101 By agreement between manufacturer and testing authority, one sample can be submitted to more than
one test.
5 Rating
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable, except as follows:
6.3.12 – electrically operated valve;
Additional subclause:
6.3.12.101 – water valve;
6.5.2 According to degree of protection provided by enclosures against harmful ingress of
water (see IEC 60529)
Replacement of the second Note as follows:
NOTE 2 Preferred degrees of protection provided by enclosures are: IP20, IP30, IP40, IP54, IP65.
Values differing from these preferred values are allowed.
6.7 According to ambient temperature limits of the switch head
Modification:
In 6.7.1 and 6.7.2, read "valve" for "control" and "actuator" for "switch head".
6.8 According to protection against electric shock
– 14 – IEC 60730-2-8:2018 © IEC 2018
6.8.3 Replacement:
For an independently mounted valve or a valve integrated or incorporated in an assembly
utilizing a non-electrical source:
6.10 Not applicable.
6.11 According to number of automatic cycles (A) of each automatic action
Addition:
Water valves shall be subjected to a minimum of 6 000 automatic cycles.
Additional subclauses:
6.101 According to type of end-connections
6.101.1 Valves provided with internally threaded end-connections with either:
a) ISO 7-1 or NPT thread when pressure-tight joints are made on the thread, or
b) ISO 228-1 thread when pressure-tight joints are not made on the thread, but via an
additional sealing washer.
6.101.2 Valves provided with externally threaded end-connections for:
a) compression fittings, or
b) washered union connection, or
c) cone seated union connection, or
d) threaded pipe connections either according to ISO 7-1, ISO 228-1 or NPT thread.
6.101.3 Valves provided with flanged end-connections suitable for connection to flanges with
or without adaptors.
6.101.4 Valves provided with end-connections with neck-end for soldered or welded
connections.
6.101.5 Valves provided with end-connections with hose tails for use with flexible tubing.
6.102 According to features of electrically operated water valves
6.102.1 According to the size and capacity:
Size and capacity to be specified in dimension of inlet and outlet connections and flow factor.
6.102.2 According to the type of operation:
Direct or pilot controlled with or without minimum pressure differential limit.
6.102.3 According to function:
Description of function regarding the number of water connections and the valve position when
de-energized.
6.102.4 According to material of wetted parts:
Includes the material identification of all internal parts in contact with water such as the body
and the sealing material.
6.102.5 According to construction of the closure member:
The valve may be a direct operated or pilot valve controlled diaphragm or piston-operated
poppet type or spool type closing member.
6.102.6 According to construction of the actuator:
Examples are: electromagnetic; electric motor; electrically heated wax or bi-metal controlled
actuator with actuator stem in contact with or shielded from the water.
6.103 According to temperature, pressure and type of the water controlled
Valves for controlling:
6.103.1 Cold water supply with a maximum temperature of 25 °C;
6.103.2 Hot water supply with a maximum temperature of 90 °C;
6.103.3 Void
6.103.4 Void
6.103.5 Circulation heating water with a maximum temperature of between 50 °C and 120 °C;
6.103.6 Water with a maximum rated temperature other than indicated above;
6.103.7 Water flow in systems with a maximum pressure of 0,1 MPa;
6.103.8 Water flow in systems with a maximum pressure of 0,6 MPa;
6.103.9 Water flow in systems with a maximum pressure of 0,86 MPa;
6.103.10 Water flow in systems with a maximum pressure of 1,0 MPa;
6.103.11 Water flow in systems with a maximum pressure of 1,6 MPa;
6.103.12 Water flow in systems with a maximum system pressure other than indicated above.
6.104 According to nominal size and thread size of end connections
The nominal size and the thread size of end connections are given in Table 101.
– 16 – IEC 60730-2-8:2018 © IEC 2018
Table 101 – Nominal size and thread size of end connections
Designation of thread (inch) Nominal size
1/8 DN 6
1/4 DN 8
3/8 DN 10
1/2 DN 15
3/4 DN 20
1 DN 25
1 ¼ DN 32
1 ½ DN 40
2 DN 50
NOTE The designation "DN" followed by the appropriate convenient round number
is normally only loosely related to manufacturing dimensions and corresponds for
reference purposes only approximately to the internal diameter expressed in
millimetres of the water system.
7 Information
This clause of Part 1 is applicable, except as follows:
Table 1 – Required information and methods of providing information
Modification:
Replace the following items by:
Information Clause or Method
subclause
7 The type of load controlled by each circuit (for valves with switching 6.2, 14, 17, C
b
23.1.1
devices)
22 Temperature limits of the actuator, if T lower than 0 °C, or T 6.7, 14.5, D
min max
14.7, 17.3
other than 55 °C
26 Not applicable
28 Not applicable
29 Type of disconnection or interruption provided by each circuit (for 6.9, 2.4 X
valves with switching devices)
36 to 38 Not applicable
aa
39 6.4 D or E
Type 1 or type 2 action (for valves with switching devices)
40 Additional features of type 1 or type 2 actions (for valves with switching 6.4.3, 11.4 D or E
aa
devices)
41 Manufacturing deviation and condition of test appropriate to deviation 11.4.3, 15, X
(for valves with switching devices) 17.14, 2.11.1
42 Drift (for valves with switching devices) 11.4.3, 15, X
2.11.2
43 to 44 Not applicable
47 Not applicable
49 Control pollution situation of actuator 6.5.3 D or E
Add the following additional items:
Information Clause or Method
subclause
101 Power consumption in watts or in VA or current rating C
102 Maximum operating pressure differential in MPa (or in bar) 2.3.114 D
103 Minimum operating pressure differential in MPa (or in bar) 2.3.115 D
104 Maximum working pressure in MPa (or in bar) 2.3.29, 6.103 D
105 Flow direction indicated by an arrow (on valve body) C
106 Maximum water temperature in °C 6.103 D
107 Void
108 For valves intended to be cleaned in normal use, the method of 18.1.101 D
disassembling, cleaning, reassembling and maintenance
109 If valve is intended to be used in water supply installations where water 18.101.3 X
hammer may occur
110 Material identification of wetted parts 6.102.4 X
111 Valve features 6.101, 6.102 D
112 Plastic valves intended to be hand-tightened 18.103.5 D
113 Valves incorporated in those household appliances covered by the 14.5.107, D
IEC 60335 series where the loss of water supply or dry valve is 27.101
ab
considered as an abnormal use condition
114 For valves identified under item 113, details of any limitation of 27.101.2 D
ac
operating time (duty cycle)
115 Water valve intended to be used in accordance with IEC 60335 18.101.3 D
116 If the valve is intended to be used for the control of water for tap and 2.13.103 D
shower outlets 18.101.4
aa
The water valve itself is type 1 action.
ab
Not applicable in Canada, Japan and the USA.
ac
Not applicable in Canada, Japan, and the USA.
7.4 Additional requirements for marking
This clause of Part 1 is applicable except as follows:
7.4.4 Not applicable.
8 Protection against electric shock
This clause of Part 1 is applicable, except as follows:
8.1.4 Addition:
For class II water valves, reinforced insulation shall not be in direct contact with the water.
Additional subclause:
8.1.101 Valves which are declared capable of being cleaned in normal use shall be so
constructed that there is adequate protection against accidental contact with live parts during
cleaning.
Compliance is checked by inspection and by a simulated cleaning operation as described below:
– 18 – IEC 60730-2-8:2018 © IEC 2018
If the actuator can be removed from the valve body assembly without disconnecting the
electrical wiring, the removed actuator shall still meet the requirements for its class of
construction. Removal shall not affect electrical characteristics.
If the actuator can only be removed from the valve body assembly after removing the electrical
wiring:
a) the inspection and simulated cleaning operation shall be made in accordance with the
manufacturer's instructions in the documentation;
b) if a plug connector is used, this removal shall be impossible before the plug connector is
disconnected. Plug connectors for actuators with earth connection shall be so designed that
the disconnection of the electrical supply takes place prior to the disconnection of the
earthed wire.
NOTE For plug connectors, reference is made to ISO 4400 and ISO 6952.
9 Provision for protective earthing
This clause of Part 1 is applicable.
10 Terminals and terminations
This clause of Part 1 is applicable, except as follows:
10.1 Terminals and terminations for external copper conductors
10.1.1.1 Delete Note 2.
10.1.16 Flying leads (pig tails)
Modification:
Replace the first sentence by:
Where flying lead (pig tail) connections are used, the lead or leads shall be no smaller than
0,75 mm with an insulation having a nominal thickness not less than 0,6 mm and shall be a
minimum of 450 mm long as measured from the coil to the end of the lead, except if the flying
lead is intended to be connected to the wiring within the valve enclosure, in which case the
flying lead shall be at least 150 mm long.
10.1.16.1 Replacement:
Flying leads shall be provided with strain relief for attachment method Z to prevent mechanical
stress from being transmitted to terminals for internal wiring.
Compliance is checked by inspection and by applying a pull of 44 N for 1 min.
During the pull, the lead shall not be damaged and shall not have been displaced longitudinally
by more than 2 mm after the test. Creepage distances and clearances shall not have been
reduced to less than the value specified in Clause 20.
10.2 Terminals and terminations for internal conductors
Additional notes:
NOTE 101 The requirements of 10.2 also apply to terminals and terminations of water valves which are intended to
be used for internal wiring which is external to the equipment.
NOTE 102 The requirements of 10.2 apply to terminals and terminations deliberately designed to accept special
connectors such as the plug connectors described in ISO 4400 and ISO 6952.
NOTE 103 The requirements of 10.2 apply to terminals and terminations deliberately designed for connection of
pilot duty loads.
11 Constructional requirements
This clause of Part 1 is applicable, except as follows:
11.3 Actuation and operation
Modification:
For "controls" read "valves with auxiliary swi
...
IEC 60730-2-8 ®
Edition 3.1 2021-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Automatic electrical controls –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
Dispositifs de commande électrique automatiques –
Partie 2-8: Exigences particulières pour les électrovannes hydrauliques,
y compris les exigences mécaniques
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IEC 60730-2-8 ®
Edition 3.1 2021-10
CONSOLIDATED VERSION
INTERNATIONAL
STANDARD
NORME
INTERNATIONALE
colour
inside
Automatic electrical controls –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
Dispositifs de commande électrique automatiques –
Partie 2-8: Exigences particulières pour les électrovannes hydrauliques,
y compris les exigences mécaniques
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
INTERNATIONALE
ICS 97.120 ISBN 978-2-8322-4467-8
IEC 60730-2-8 ®
Edition 3.1 2021-10
CONSOLIDATED VERSION
REDLINE VERSION
VERSION REDLINE
colour
inside
Automatic electrical controls –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
Dispositifs de commande électrique automatiques –
Partie 2-8: Exigences particulières pour les électrovannes hydrauliques,
y compris les exigences mécaniques
– 2 – IEC 60730-2-8:2018+AMD1:2021 CSV
© IEC 2021
CONTENTS
FOREWORD . 4
1 Scope and normative references . 7
2 Terms and definitions . 9
3 General requirements . 13
4 General notes on tests . 13
5 Rating. 13
6 Classification . 13
7 Information . 16
8 Protection against electric shock . 17
9 Provision for protective earthing . 18
10 Terminals and terminations . 18
11 Constructional requirements . 19
12 Moisture and dust resistance . 19
13 Electric strength and insulation resistance . 20
14 Heating . 20
15 Manufacturing deviation and drift . 21
16 Environmental stress . 21
17 Endurance . 22
18 Mechanical strength . 23
19 Threaded parts and connections . 26
20 Creepage distances, clearances and distances through insulation . 26
21 Resistance to heat, fire and tracking . 26
22 Resistance to corrosion . 26
23 Electromagnetic compatibility (EMC) requirements – Emission . 26
24 Components . 26
25 Normal operation . 26
26 Electromagnetic compatibility (EMC) requirements – Immunity . 27
27 Abnormal operation . 27
28 Guidance on the use of electronic disconnection . 30
Annex H (normative) Requirements for electronic controls . 31
Annex AA (informative) Relation between different flow coefficients . 36
Annex BB (normative) Arrangement for the measurement of transient pressures
caused by water valves . 37
Annex CC (normative) . 40
Annex DD (normative) Torque . 42
Annex EE (normative) Arrangement for the measurement of transient pressures
caused by water valves with a declared pressure of up to and including 1,0 MPa (10
bar) . 46
Bibliography . 48
Figure BB.1 – Transient pressure measurement test rig schematic diagram . 38
Figure DD.1 – Arrangements for carrying out the torque test . 42
© IEC 2021
Figure EE.1 – Transient pressure measurement test rig for valves with a declared
pressure of up to and including 1,0 MPa (10 bar) schematic diagram . 46
Table 101 – Nominal size and thread size of end connections. 16
Table 1 – Required information and methods of providing information . 16
Table 102 – Torque test requirement for metal valves with internal threaded end-
connections . 25
Table 103 – Torque test requirement for metal valves with external threaded end-
connections . 25
Table 104 – Maximum winding temperature (for test of blocked output conditions and
valves declared under Table 1, item 113) . 28
Table CC.1 – Test requirements for valves intended for uses other than the control of
water for tap and shower outlets . 40
Table CC.2 – Test requirements for valves intended for the control of water for tap and
shower outlets . 41
Table DD.1 – Required torque for test . 43
Table DD.2 – Tightening torque in newton metres (Nm) for bolts and screws for
adaptors . 45
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© IEC 2021
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent
rights. IEC shall not be held responsible for identifying any or all such patent rights.
This consolidated version of the official IEC Standard and its amendment has been
prepared for user convenience.
IEC 60730-2-8 edition 3.1 contains the third edition (2018-08) [documents 72/1077/CDV
and 72/1120/RVC] and its amendment 1 (2021-10) [documents 72/1257/CDV and
72/1280/RVC].
In this Redline version, a vertical line in the margin shows where the technical content is
modified by amendment 1. Additions are in green text, deletions are in strikethrough red
text. A separate Final version with all changes accepted is available in this publication.
© IEC 2021
International Standard IEC 60730-2-8 has been prepared by IEC technical committee 72:
Automatic electrical controls.
This third edition constitutes a technical revision.
This edition includes the following significant technical changes with respect to the previous
edition:
• alignment of the text with IEC 60730-1 fifth edition (2013) including Amendment 1:2015;
• introduction of specific requirements for thermoplastic bodied valves for the control of water
for tap and shower outlets (18.101.4.3 and Annex CC);
• removal of Subclause 18.102 Wetted material specifications.
Future standards in this series will carry the new general title as cited above. Titles of existing
standards in this series will be updated at the time of the next edition.
This document has been drafted in accordance with the ISO/IEC Directives, Part 2.
This Part 2-8 is intended to be used in conjunction with IEC 60730-1. It was established on the
basis of the fifth edition of that standard (2013) including its Amendment 1 (2015) of that
publication and Amendment 2 (2020). Consideration may be given to future editions of, or
amendments to, IEC 60730-1.
This Part 2-8 supplements or modifies the corresponding clauses in IEC 60730-1 so as to
convert that publication into the IEC standard: Safety requirements for electrically operated
water valves, including mechanical requirements.
Where this part 2-8 states "addition", "modification" or "replacement", the relevant requirement,
test specification or explanatory matter in part 1 should be adapted accordingly.
Where no change is necessary, part 2-8 indicates that the relevant clause or subclause applies.
In the development of a fully international standard, it has been necessary to take into
consideration the differing requirements resulting from practical experience in various parts of
the world and to recognize the variation in national electrical systems and wiring rules.
The "in some countries" notes regarding differing national practices are contained in the following elements:
– Table 1, footnotes ab and ac
– Table 13, footnote aa
– 1.1.4
– 16.2.1
– 18.101.3
– 27.2.3.1
– 27.101
– Table DD. 1, footnote a
– Table DD.2, footnote a
In this publication:
1) The following print types are used:
– Requirements proper: in roman type.
– Test specifications: in italic type.
– Notes: in smaller roman type.
– Defined terms: in bold type
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© IEC 2021
2) Subclauses, notes, tables or figures which are additional to those in part 1 are numbered
starting from 101, additional annexes are lettered AA, BB, etc.
The committee has decided that the contents of the base publication and its amendment will
remain unchanged until the stability date indicated on the IEC web site under webstore.iec.ch
in the data related to the specific publication. At this date, the publication will be
• reconfirmed,
• withdrawn,
• replaced by a revised edition, or
• amended.
IMPORTANT – The 'colour inside' logo on the cover page of this publication indicates
that it contains colours which are considered to be useful for the correct understanding
of its contents. Users should therefore print this document using a colour printer.
The contents of the corrigendum 1 (2022-10) have been included in this copy.
© IEC 2021
AUTOMATIC ELECTRICAL CONTROLS –
Part 2-8: Particular requirements for electrically operated water valves,
including mechanical requirements
1 Scope and normative references
This clause of Part 1 is applicable except as follows:
1.1 Scope
Replacement:
This part of IEC 60730 applies to electrically operated water valves for use in, on or in
association with equipment for household and similar use, including heating, air-conditioning
and similar applications. The equipment can use electricity, gas, oil, solid fuel, solar thermal
energy, etc., or a combination thereof.
NOTE 1 Throughout this document, the word "equipment" means "appliances and equipment."
This document is applicable to electrically operated water valves for building automation within
the scope of ISO 16484.
This document also applies to automatic electrically operated water valves for equipment that
can be used by the public, such as equipment intended to be used in shops, offices, hospitals,
farms and commercial and industrial applications.
EXAMPLE 1: Electrically operated water valves for commercial catering, heating and air-conditioning equipment.
This document does not apply to electrically operated water valves intended exclusively for
industrial process applications unless explicitly mentioned in the relevant equipment standard.
This document applies to electrically operated water valves powered by primary or secondary
batteries, requirements for which are contained within the standard, including Annex V.
This document does not cover the prevention of contamination of drinking water as a result of
contact with materials.
1.1.1 This document applies to the inherent safety, to the operating values, operating times
and operating sequences where such are associated with equipment safety, and to the testing
of automatic electrical control devices used in, on or in association with, household and similar
equipment.
This document contains requirements for electrical features of water valves and requirements
for mechanical features of valves that affect their intended operation.
This document is also applicable to electrically operated water valves for appliances within the
scope of the IEC 60335 series of standards.
This document does not apply to:
– electrically operated water valves of nominal connection size above DN 50;
– electrically operated water valves for admissible nominal pressure rating above 1,6 MPa;
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© IEC 2021
– food dispensers;
– detergent dispensers;
– steam valves;
– electrically operated water valves designed exclusively for industrial applications.
Throughout this document, where it can be used unambiguously, the term:
– "valve" is used to denote an electrically operated water valve (including actuator and valve
body assembly);
– "actuator" means "electrically operated mechanism or prime mover";
– "valve body" means "valve body assembly";
– "equipment" includes "appliance" and "control system".
1.1.2 This document applies to electrically operated water valves, responsive to or controlling
such characteristics as temperature, pressure, passage of time, humidity, light, electrostatic
effects, flow, or liquid level, current, voltage, acceleration, or combinations thereof.
1.1.3 This document also applies to actuators and to valve bodies which are designed to be
fitted to each other.
1.1.4 This document applies to individual valves, valves utilized as part of a system and valves
mechanically integral with multi-functional controls having non-electrical outputs.
NOTE Attention is drawn to the fact that, in many countries, additional test requirements and by-laws have been
established by the water authorities or companies.
1.1.5 This document applies to AC or DC powered electrically operated water valves with a
rated voltage not exceeding 690 V AC or 600 V DC.
1.1.6 This document does not take into account the response value of an automatic action
of a valve, if such a response value is dependent upon the method of mounting the valve in
the equipment. Where a response value is of significant purpose for the protection of the user,
or surroundings, the value defined in the appropriate equipment standard or as determined by
the manufacturer shall apply.
1.1.7 This document applies also to electrically operated water valves incorporating
electronic devices, requirements for which are contained in Annex H.
1.1.8 This document applies also to electrically operated water valves using NTC or PTC
thermistors, requirements for which are contained in Annex J.
1.1.9 This document applies to the electrical and functional safety of electrically operated
water valves capable of receiving and responding to communications signals, including signals
for power billing rate and demand response.
The signals can be transmitted to or received from external units being part of the valve (wired),
or to and from external units which are not part of the valve (wireless) under test.
1.1.10 This document does not address the integrity of the output signal to the network devices,
such as interoperability with other devices unless it has been evaluated as part of the control
system.
© IEC 2021
1.2 Normative references
This clause of Part 1 is applicable except as follows:
Addition:
ISO 7-1:1994, Pipe threads where pressure-tight joints are made on the threads – Part 1:
Dimensions, tolerances and designation
ISO 65:1981, Carbon steel tubes suitable for screwing in accordance with ISO 7-1
ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads – Part 1:
Dimensions, tolerances and designation
ISO 630, Structural steels – Plates, wide flats, bars sections and profiles
ISO 630-2:2011, Structural steels – Part 2: Technical delivery conditions for structural steels
for general purposes
ISO 1179-1, Connections for general use and fluid power – Ports and stud ends with
ISO 228-1 threads with elastomeric or metal-to-metal sealing – Part 1: Threaded ports
ISO 4144, Pipework – Stainless steel fittings threaded in accordance with ISO 7-1
2 Terms and definitions
This clause of Part 1 is applicable, except as follows:
2.2 Definitions of types of control according to purpose
2.2.17
electrically operated valve
Addition:
Note 1 to entry: A semi-automatic valve that is opened manually and closes automatically or vice versa is also
covered by this definition.
Additional definitions:
2.2.17.101
valve
device consisting of an actuator connected to a valve body assembly and used to stop or
regulate the flow of fluid by the closure or partial closure of an orifice
2.2.17.102
water valve
valve intended to be connected to a water supply and to control water flow
2.2.17.103
heating-water valve
valve intended to control the water circulation in heating systems
ISO 630 has been withdrawn.
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© IEC 2021
2.2.17.104
actuator
electrically operated mechanism or prime mover used to effect the opening or closing action of
a valve
Note 1 to entry: An actuator may be integral with the valve, fixed to the valve body assembly or delivered as a
separate component.
Note 2 to entry: An actuator may also include the valve and closure member.
2.2.17.105
valve body assembly
assembly comprising the valve body, inlet and outlet end connections, the valve seat, closure
member and stem or shaft
Note 1 to entry: In some cases, the stem and closure member may be part of the actuator.
2.2.17.106
valve body
part of the valve body assembly which is the main pressure boundary
Note 1 to entry: It provides the water flow passage-ways with end connections.
2.2.17.107
nominal size
numerical designation of size which is common to all components in a fluid-conducting system
other than components designated by outside diameter or by thread size
Note 1 to entry: It may be designated by "DN" followed by a convenient round number, for reference purposes only.
Note 2 to entry: Some older international standards refer to nominal size as nominal diameter but, for the purpose
of this document, the two terms are synonymous.
2.2.17.108
nominal pressure rating
numerical designation of pressure rating
Note 1 to entry: It may be designated by the letters "PN" (also referred to as the pressure number) followed by a
convenient round number, for reference purposes only.
2.2.17.109
end connection
valve body configuration provided to make a pressure-tight joint to the fluid-conducting system
2.2.17.110
valve seat
surface of the orifice within the valve which makes full contact with the closure member
2.2.17.111
closure member
movable part of the valve which is positioned in the flow path to modify the rate of flow through
the valve
Note 1 to entry: A closure member may be a plug, ball, disc, vane, gate, etc.
2.2.17.112
stem
component which connects the actuator to, and positions, the closure member
Note 1 to entry: For rotary valves, the word "shaft" should be used in place of "stem".
Note 2 to entry: In some controls, the stem may be part of the actuator.
© IEC 2021
2.2.17.113
fitting
any device such as a reducer, expander, elbow, or T-piece which is attached directly to an end-
connection of the valve body assembly
2.3 Definitions relating to the function of controls
2.3.29
maximum working pressure
Modification:
Delete “maximum rated pressure”.
Additional definitions:
2.3.101
on-off valve
valve which is open or closed, without any intermediate positions
2.3.102
normally closed valve
valve which is closed when not electrically energized
2.3.103
normally open valve
valve which is open when not electrically energized
2.3.104
modulating valve
valve which has a variable flow rate between predetermined flow limits
2.3.105
diverting valve
valve with one or more inputs and outputs which may permit flow from any combination of inputs
to outputs
2.3.106
closed position
position of the closure member when there is no water flow from the outlet side of the valve
2.3.107
travel
displacement of the closure member from the closed position
2.3.108
rated travel
displacement of the closure member from the closed position to the full open position
2.3.109
open position
position of the closure member when there is a flow of water from the outlet side of the valve
2.3.110
fully open position
position of the closure member so that the amount of water flowing through the valve is in
accordance with the rated flow rate
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© IEC 2021
2.3.111
flow rate
volume of water flowing through the valve in unit time
2.3.112
rated flow rate
flow rate at the rated travel under standard reference conditions of temperature and pressure
declared at a given pressure difference
2.3.113
flow factor
factor specifying the amount of water which can pass through the valve at a specified pressure
difference
Note 1 to entry: The flow factor may be referred to as flow coefficient.
Note 2 to entry: The relationship between the different flow factors in use is indicated in Annex AA.
2.3.114
maximum operating pressure differential
declared maximum difference in pressure between inlet and outlet ports of the valve against
which the actuator can operate the closure member
2.3.115
minimum operating pressure differential
declared minimum pressure difference at which the valve opens or closes
2.3.116
Void
2.3.117
water hammer
excessive transient pressure which can occur in some water supply systems as a result of
closing a valve as intended
2.3.118
transient pressure
short-time pressure surge exceeding the normal stable supply pressure in the closed condition
of the valve
2.3.119
valve with anti-water-hammer characteristics
valve that does not cause an excessive pressure drop when opening and no excessive transient
pressure when closing if connected directly, without special precautions to water supply mains
applications where water-hammer may occur
2.13 Miscellaneous definitions
Additional definitions:
2.13.101
Void
2.13.102
Void
© IEC 2021
2.13.103
water for tap and shower outlets
water intended to supply a bath, shower, bidet, wash basin, kitchen sink, or other such taps
that discharge in to a drainage system
3 General requirements
This clause of Part 1 is applicable.
4 General notes on tests
This clause of Part 1 is applicable, except as follows:
4.1 Conditions of test
4.1.2 Addition:
Unless otherwise specified in this document, water temperature for the tests shall be maintained
at a temperature of (20 ± 5) °C.
4.2 Samples required
4.2.1 Addition:
One sample is required for each test of Clause 27.
NOTE 101 By agreement between manufacturer and testing authority, one sample can be submitted to more than
one test.
5 Rating
This clause of Part 1 is applicable.
6 Classification
This clause of Part 1 is applicable, except as follows:
6.3.12 – electrically operated valve;
Additional subclause:
6.3.12.101 – water valve;
6.5.2 According to degree of protection provided by enclosures against harmful ingress of
water (see IEC 60529)
Replacement of the second Note as follows:
NOTE 2 Preferred degrees of protection provided by enclosures are: IP20, IP30, IP40, IP54, IP65.
Values differing from these preferred values are allowed.
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© IEC 2021
6.7 According to ambient temperature limits of the switch head
Modification:
In 6.7.1 and 6.7.2, read "valve" for "control" and "actuator" for "switch head".
6.8 According to protection against electric shock
6.8.3 Replacement:
For an independently mounted valve or a valve integrated or incorporated in an assembly
utilizing a non-electrical source:
6.10 Not applicable.
6.11 According to number of automatic cycles (A) of each automatic action
Addition:
Water valves shall be subjected to a minimum of 6 000 automatic cycles.
Additional subclauses:
6.101 According to type of end-connections
6.101.1 Valves provided with internally threaded end-connections with either:
a) ISO 7-1 or NPT thread when pressure-tight joints are made on the thread, or
b) ISO 228-1 thread when pressure-tight joints are not made on the thread, but via an
additional sealing washer.
6.101.2 Valves provided with externally threaded end-connections for:
a) compression fittings, or
b) washered union connection, or
c) cone seated union connection, or
d) threaded pipe connections either according to ISO 7-1, ISO 228-1 or NPT thread.
6.101.3 Valves provided with flanged end-connections suitable for connection to flanges with
or without adaptors.
6.101.4 Valves provided with end-connections with neck-end for soldered or welded
connections.
6.101.5 Valves provided with end-connections with hose tails for use with flexible tubing.
6.102 According to features of electrically operated water valves
6.102.1 According to the size and capacity:
Size and capacity to be specified in dimension of inlet and outlet connections and flow factor.
6.102.2 According to the type of operation:
Direct or pilot controlled with or without minimum pressure differential limit.
© IEC 2021
6.102.3 According to function:
Description of function regarding the number of water connections and the valve position when
de-energized.
6.102.4 According to material of wetted parts:
Includes the material identification of all internal parts in contact with water such as the body
and the sealing material.
6.102.5 According to construction of the closure member:
The valve may be a direct operated or pilot valve controlled diaphragm or piston-operated
poppet type or spool type closing member.
6.102.6 According to construction of the actuator:
Examples are: electromagnetic; electric motor; electrically heated wax or bi-metal controlled
actuator with actuator stem in contact with or shielded from the water.
6.103 According to temperature, pressure and type of the water controlled
Valves for controlling:
6.103.1 Cold water supply with a maximum temperature of 25 °C;
6.103.2 Hot water supply with a maximum temperature of 90 °C;
6.103.3 Void
6.103.4 Void
6.103.5 Circulation heating water with a maximum temperature of between 50 °C and 120 °C;
6.103.6 Water with a maximum rated temperature other than indicated above;
6.103.7 Water flow in systems with a maximum pressure of 0,1 MPa;
6.103.8 Water flow in systems with a maximum pressure of 0,6 MPa;
6.103.9 Water flow in systems with a maximum pressure of 0,86 MPa;
6.103.10 Water flow in systems with a maximum pressure of 1,0 MPa;
6.103.11 Water flow in systems with a maximum pressure of 1,6 MPa;
6.103.12 Water flow in systems with a maximum system pressure other than indicated above.
6.104 According to nominal size and thread size of end connections
The nominal size and the thread size of end connections are given in Table 101.
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© IEC 2021
Table 101 – Nominal size and thread size of end connections
Designation of thread (inch) Nominal size
1/8 DN 6
1/4 DN 8
3/8 DN 10
1/2 DN 15
3/4 DN 20
1 DN 25
1 ¼ DN 32
1 ½ DN 40
2 DN 50
NOTE The designation "DN" followed by the appropriate convenient round number
is normally only loosely related to manufacturing dimensions and corresponds for
reference purposes only approximately to the internal diameter expressed in
millimetres of the water system.
7 Information
This clause of Part 1 is applicable, except as follows:
Table 1 – Required information and methods of providing information
Modification:
Replace the following items by:
Information Clause or Method
subclause
7 The type of load controlled by each circuit (for valves with switching 6.2, 14, 17, C
b
23.1.1
devices)
22 Temperature limits of the actuator, if T lower than 0 °C, or T 6.7, 14.5, D
min max
14.7, 17.3
other than 55 °C
26 Not applicable
28 Not applicable
29 Type of disconnection or interruption provided by each circuit (for 6.9, 2.4 X
valves with switching devices)
36 to 38 Not applicable
aa
39 6.4 D or E
Type 1 or type 2 action (for valves with switching devices)
40 Additional features of type 1 or type 2 actions (for valves with switching 6.4.3, 11.4 D or E
aa
devices)
41 Manufacturing deviation and condition of test appropriate to deviation 11.4.3, 15, X
(for valves with switching devices) 17.14, 2.11.1
42 Drift (for valves with switching devices) 11.4.3, 15, X
2.11.2
43 to 44 Not applicable
47 Not applicable
49 Control pollution situation of actuator 6.5.3 D or E
© IEC 2021
Add the following additional items:
Information Clause or Method
subclause
101 Power consumption in watts or in VA or current rating C
102 Maximum operating pressure differential in MPa (or in bar) 2.3.114 D
103 Minimum operating pressure differential in MPa (or in bar) 2.3.115 D
104 Maximum working pressure in MPa (or in bar) 2.3.29, 6.103 D
105 Flow direction indicated by an arrow (on valve body) C
106 Maximum water temperature in °C 6.103 D
107 Void
108 For valves intended to be cleaned in normal use, the method of 18.1.101 D
disassembling, cleaning, reassembling and maintenance
109 If valve is intended to be used in water supply installations where water 18.101.3 X
hammer may occur
110 Material identification of wetted parts 6.102.4 X
111 Valve features 6.101, 6.102 D
112 Plastic valves intended to be hand-tightened 18.103.5 D
113 Valves incorporated in those household appliances covered by the 14.5.107, D
IEC 60335 series where the loss of water supply or dry valve is 27.101
ab
considered as an abnormal use condition
114 For valves identified under item 113, details of any limitation of 27.101.2 D
ac
operating time (duty cycle)
115 Water valve intended to be used in accordance with IEC 60335 18.101.3 D
116 If the valve is intended to be used for the control of water for tap and 2.13.103 D
shower outlets 18.101.4
aa
The water valve itself is type 1 action.
ab
Not applicable in Canada, Japan and the USA.
ac
Not applicable in Canada, Japan, and the USA.
7.4 Additional requirements for marking
This clause of Part 1 is applicable except as follows:
7.4.4 Not applicable.
8 Protection against electric shock
This clause of Part 1 is applicable, except as follows:
8.1.4 Addition:
For class II water valves, reinforced insulation shall not be in direct contact with the water.
Additional subclause:
8.1.101 Valves which are declared capable of being cleaned in normal use shall be so
constructed that there is adequate protection against accidental contact with live parts during
cleaning.
Compliance is checked by inspection and by a simulated cleaning operation as described below:
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© IEC 2021
If the actuator can be removed from the valve body assembly without disconnecting the
electrical wiring, the removed actuator shall still meet the requirements for its class of
construction. Removal shall not affect electrical characteristics.
If the actuator can only be removed from the valve body assembly after removing the electrical
wiring:
a) the inspection and simulated cleaning operation shall be made in accordance with the
manufacturer's instructions in the documentation;
b) if a plug connector is used, this removal shall be impossible before the plug connector is
disconnected. Plug connectors for actuators with earth connection shall be so designed that
the disconnection of the electrical supply takes place prior to the disconnection of the
earthed wire.
NOTE For plug connectors, reference is made to ISO 4400 and ISO 6952.
9 Provision for protective earthing
This clause of Part 1 is applicable.
10 Terminals and terminations
This clause of Part 1 is applicable, except as follows:
10.1 Terminals and terminations for external copper conductors
10.1.1.1 Delete Note 2.
10.1.16 Flying leads (pig tails)
Modification:
Replace the first sentence by:
Where flying lead (pig tail) connections are used, the lead or leads shall be no smaller than
0,75 mm with an insulation having a nominal thickness not less than 0,6 mm and shall be a
minimum of 450 mm long as measured from the coil to the end of the lead, except if the flying
lead is intended to be connected to the wiring within the valve enclosure, in which case the
flying lead shall be at least 150 mm long.
10.1.16.1 Replacement:
Flyi
...
Frequently Asked Questions
IEC 60730-2-8:2018 is a standard published by the International Electrotechnical Commission (IEC). Its full title is "Automatic electrical controls - Part 2-8: Particular requirements for electrically operated water valves, including mechanical requirements". This standard covers: IEC 60730-2-8:2018 applies to electrically operated water valves for use in, on or in association with equipment for household and similar use, including heating, air-conditioning and similar applications. The equipment can use electricity, gas, oil, solid fuel, solar thermal energy, etc., or a combination thereof. This document is applicable to electrically operated water valves for building automation within the scope of ISO 16484. This document also applies to automatic electrically operated water valves for equipment that can be used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications. This document does not apply to electrically operated water valves intended exclusively for industrial process applications unless explicitly mentioned in the relevant equipment standard. This document applies to electrically operated water valves powered by primary or secondary batteries, requirements for which are contained within the standard, including Annex V. This document does not cover the prevention of contamination of drinking water as a result of contact with materials. This document applies to the inherent safety, to the operating values, operating times and operating sequences where such are associated with equipment safety, and to the testing of automatic electrical control devices used in, on or in association with, household and similar equipment. This document contains requirements for electrical features of water valves and requirements for mechanical features of valves that affect their intended operation. This document is also applicable to electrically operated water valves for appliances within the scope of the IEC 60335 series of standards. This document does not apply to: - electrically operated water valves of nominal connection size above DN 50; - electrically operated water valves for admissible nominal pressure rating above 1,6 MPa; - food dispensers; - detergent dispensers; - steam valves; - electrically operated water valves designed exclusively for industrial applications. This document applies to electrically operated water valves, responsive to or controlling such characteristics as temperature, pressure, passage of time, humidity, light, electrostatic effects, flow, or liquid level, current, voltage, acceleration, or combinations thereof. This document also applies to actuators and to valve bodies which are designed to be fitted to each other. This document applies to individual valves, valves utilized as part of a system and valves mechanically integral with multi-functional controls having non-electrical outputs. This document applies to AC or DC powered electrically operated water valves with a rated voltage not exceeding 690 V AC or 600 V DC. This document does not take into account the response value of an automatic action of a valve, if such a response value is dependent upon the method of mounting the valve in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer shall apply. This document applies also to electrically operated water valves incorporating electronic devices, requirements for which are contained in Annex H. This document applies also to electrically operated water valves using NTC or PTC thermistors, requirements for which are contained in Annex J. This document applies to the electrical and functional safety of electrically operated water valves capable of receiving and responding to communications signals, including signals for power billing rate and demand response. The signals can be transmitted to or received from external units being part of the valve (wired), or to and from external units which are not part of the valve (wireless) under test. This document does not address the integrity of the output signal to the network devices, such as interope
IEC 60730-2-8:2018 applies to electrically operated water valves for use in, on or in association with equipment for household and similar use, including heating, air-conditioning and similar applications. The equipment can use electricity, gas, oil, solid fuel, solar thermal energy, etc., or a combination thereof. This document is applicable to electrically operated water valves for building automation within the scope of ISO 16484. This document also applies to automatic electrically operated water valves for equipment that can be used by the public, such as equipment intended to be used in shops, offices, hospitals, farms and commercial and industrial applications. This document does not apply to electrically operated water valves intended exclusively for industrial process applications unless explicitly mentioned in the relevant equipment standard. This document applies to electrically operated water valves powered by primary or secondary batteries, requirements for which are contained within the standard, including Annex V. This document does not cover the prevention of contamination of drinking water as a result of contact with materials. This document applies to the inherent safety, to the operating values, operating times and operating sequences where such are associated with equipment safety, and to the testing of automatic electrical control devices used in, on or in association with, household and similar equipment. This document contains requirements for electrical features of water valves and requirements for mechanical features of valves that affect their intended operation. This document is also applicable to electrically operated water valves for appliances within the scope of the IEC 60335 series of standards. This document does not apply to: - electrically operated water valves of nominal connection size above DN 50; - electrically operated water valves for admissible nominal pressure rating above 1,6 MPa; - food dispensers; - detergent dispensers; - steam valves; - electrically operated water valves designed exclusively for industrial applications. This document applies to electrically operated water valves, responsive to or controlling such characteristics as temperature, pressure, passage of time, humidity, light, electrostatic effects, flow, or liquid level, current, voltage, acceleration, or combinations thereof. This document also applies to actuators and to valve bodies which are designed to be fitted to each other. This document applies to individual valves, valves utilized as part of a system and valves mechanically integral with multi-functional controls having non-electrical outputs. This document applies to AC or DC powered electrically operated water valves with a rated voltage not exceeding 690 V AC or 600 V DC. This document does not take into account the response value of an automatic action of a valve, if such a response value is dependent upon the method of mounting the valve in the equipment. Where a response value is of significant purpose for the protection of the user, or surroundings, the value defined in the appropriate equipment standard or as determined by the manufacturer shall apply. This document applies also to electrically operated water valves incorporating electronic devices, requirements for which are contained in Annex H. This document applies also to electrically operated water valves using NTC or PTC thermistors, requirements for which are contained in Annex J. This document applies to the electrical and functional safety of electrically operated water valves capable of receiving and responding to communications signals, including signals for power billing rate and demand response. The signals can be transmitted to or received from external units being part of the valve (wired), or to and from external units which are not part of the valve (wireless) under test. This document does not address the integrity of the output signal to the network devices, such as interope
IEC 60730-2-8:2018 is classified under the following ICS (International Classification for Standards) categories: 97.120 - Automatic controls for household use. The ICS classification helps identify the subject area and facilitates finding related standards.
IEC 60730-2-8:2018 has the following relationships with other standards: It is inter standard links to IEC 60730-2-8:2018/AMD1:2021, IEC 60730-2-8:2025, IEC 60730-2-8:2000/AMD1:2002, IEC 60730-2-8:2000, IEC 60730-2-8:2000/AMD2:2015. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
You can purchase IEC 60730-2-8:2018 directly from iTeh Standards. The document is available in PDF format and is delivered instantly after payment. Add the standard to your cart and complete the secure checkout process. iTeh Standards is an authorized distributor of IEC standards.
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