SIST EN 16304:2022+A1:2025
(Main)Automatic vent valves for gas burners and gas burning appliances
Automatic vent valves for gas burners and gas burning appliances
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
The 1st paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
automatic vent valves for burners and appliances burning one or more gaseous fuels, hereafter referred
to as “valves”.
This document is applicable to valves with declared maximum inlet pressures up to and including
500 kPa and of nominal connection sizes up to and including DN 100.
Addition:
This document is applicable to:
— electrically actuated valves;
— valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to
any external electrical devices for switching the control signal or actuating energy;
— valves fitted with open position indicator switches.
The 4th paragraph of EN 13611:2019, Clause 1 is removed.
Automatische Abblaseventile für Gasbrenner und Gasgeräte
EN 13611:2019, Abschnitt 1, gilt mit folgender Änderung und Ergänzung:
Änderung:
Der erste Absatz von EN 13611:2019, Abschnitt 1, wird ersetzt durch:
Dieses Dokument legt die Sicherheits , Auslegungs , Konstruktions- und Leistungsanforderungen sowie die Prüfung von automatischen Abblaseventilen für Brenner und Brennstoffgeräte für einen oder mehrere gasförmige Brennstoffe, nachstehend als „Ventile“ bezeichnet, fest.
Dieses Dokument gilt für Ventile mit einem angegebenen höchsten Eingangsdruck bis einschließlich 500 kPa und mit Anschlussnennweiten bis einschließlich DN 100.
Ergänzung:
Dieses Dokument gilt für:
elektrisch betätigte Ventile;
Ventile, die durch Steuermedien betätigt werden, wenn die Steuerventile für diese Medien elektrisch betätigt werden; aber nicht für externe elektrische Elemente, die das Steuersignal oder die Antriebsenergie schalten;
Ventile mit Meldeschaltern für die offene Stellung.
Der vierte Absatz von EN 13611:2019, Abschnitt 1, entfällt.
Robinets d'évent automatiques pour brûleurs à gaz et appareils à gaz
Avtomatski varnostno izpustni ventili za plinske gorilnike in plinske aparate (vključno z dopolnilom A1)
Točka 1 standarda EN 13611:2019 se uporablja z naslednjo spremembo in dodatkom:
Sprememba:
Prvi odstavek točke 1 standarda EN 13611:2019 nadomešča naslednje besedilo:
Ta dokument določa zahteve za varnost, načrtovanje, izdelavo in delovanje ter preskušanje avtomatskih varnostno izpustnih ventilov za gorilnike in aparate, ki uporabljajo eno ali več plinastih goriv (v nadaljnjem besedilu »ventili«).
Ta dokument se uporablja za ventile z določenim največjim vstopnim tlakom do vključno 500 kPa in nazivno velikostjo priključkov do vključno DN 100.
Dodatek:
Ta dokument se uporablja za:
– električno prožene ventile;
– ventile, prožene s tekočino, pri katerih se krmilni ventili prožijo električno, vendar za preklapljanje krmilnega signala ali pogonske energije ne uporabljajo zunanjih električnih naprav;
– ventile s kazalniki preklopa odprtega položaja.
Četrti odstavek točke 1 standarda EN 13611:2019 je odstranjen.
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-marec-2025
Nadomešča:
SIST EN 16304:2022
Avtomatski varnostno izpustni ventili za plinske gorilnike in plinske aparate
(vključno z dopolnilom A1)
Automatic vent valves for gas burners and gas burning appliances
Automatische Abblaseventile für Gasbrenner und Gasgeräte
Robinets d'évent automatiques pour brûleurs à gaz et appareils à gaz
Ta slovenski standard je istoveten z: EN 16304:2022+A1:2024
ICS:
23.060.40 Tlačni regulatorji Pressure regulators
27.060.20 Plinski gorilniki Gas fuel burners
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EN 16304:2022+A1
EUROPEAN STANDARD
NORME EUROPÉENNE
November 2024
EUROPÄISCHE NORM
ICS 23.060.40
English Version
Automatic vent valves for gas burners and gas burning
appliances
Robinets d'évent automatiques pour brûleurs à gaz et Automatische Abblaseventile für Gasbrenner und
appareils à gaz Gasgeräte
This European Standard was approved by CEN on 1 August 2022 and includes Amendment 1 approved by CEN on 3 July 2024.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2024 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16304:2022+A1:2024 E
worldwide for CEN national Members.
Contents Page
European foreword . 6
Introduction . 7
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 10
4 Classification . 11
4.1 Classes of control . 11
4.2 Groups of control . 11
4.3 Classes of control functions . 11
4.4 Types of DC supplied controls . 11
5 Test conditions and uncertainty of measurements . 11
6 Design and construction . 11
6.1 General . 11
6.2 Mechanical parts of the control . 11
6.2.1 Appearance . 11
6.2.2 Holes . 11
6.2.3 Breather holes . 11
6.2.4 Screwed fastenings . 12
6.2.5 Jointing . 12
6.2.6 Moving parts . 12
6.2.7 Sealing caps . 12
6.2.8 Dismantling and reassembly . 12
6.2.9 Auxiliary canals and orifices . 12
6.2.10 Presetting device . 12
6.2.101 Design . 12
6.2.102 Open position indicator switch . 12
6.2.103 Controls assembled to a valve . 12
6.3 Materials . 12
6.3.1 General material requirements . 12
6.3.2 Housing . 12
6.3.3 Zinc alloys . 12
6.3.4 Springs . 12
6.3.5 Resistance to corrosion and surface protection. 13
6.3.6 Impregnation . 13
6.3.7 Seals for glands for moving parts . 13
6.3.101 Springs providing opening force . 13
6.3.102 Closure members . 13
6.4 Gas connections. 13
6.4.1 Making connections . 13
6.4.2 Connection sizes . 13
6.4.3 Threads . 13
6.4.4 Union joints . 13
6.4.5 Flanges . 13
6.4.6 Compression fittings . 13
6.4.7 Nipples for pressure test . 13
6.4.8 Strainers . 14
6.5 Electrical parts of the control . 14
6.5.1 General . 14
6.5.2 Switching elements . 14
6.5.3 Electrical components . 14
6.6 Protection against internal faults for the purpose of functional safety . 14
6.101 Pneumatic and hydraulic actuating mechanisms . 14
7 Performance . 14
7.1 General . 14
7.2 Leak-tightness . 15
7.3 Torsion and bending . 15
7.4 Rated flow rate . 15
7.5 Durability . 15
7.6 Performance tests for electronic controls . 15
7.7 Long-term performance for electronic controls . 15
7.8 Data exchange . 15
7.101 Opening function . 15
7.101.1 Requirement . 15
7.101.2 Test of opening function . 15
7.102 Opening force . 16
7.102.1 Requirement . 16
7.102.2 Test of opening force . 16
7.103 Opening time . 16
7.103.1 Requirement . 16
7.103.2 Test of opening time . 16
7.104 Delay time and closing time . 16
7.104.1 Requirement . 16
7.104.2 Test of delay time and closing time . 16
7.105 Open position indicator switch . 17
7.105.1 Requirement . 17
7.105.2 Test of open position indicator switch . 17
7.106 Endurance . 17
7.106.1 Requirement . 17
7.106.2 Endurance test . 17
7.106.3 Endurance test for open position indicator switch . 18
8 Electrical requirements . 18
8.1 General . 18
8.2 Protection by enclosure . 18
8.101 Switches . 19
8.102 Plug connections . 19
8.103 Power saving circuits. 19
8.103.1 Closing of the valve . 19
8.103.2 Overheating . 19
8.103.3 Test of power-saving circuits . 19
9 Electromagnetic compatibility (EMC). 20
9.1 Protection against environmental influences . 20
9.2 Supply voltage variations below 85 % of rated voltage . 20
9.3 Voltage dips and interruptions . 20
9.3.1 Requirements . 20
9.3.2 Test . 20
9.4 Supply frequency variations . 20
9.5 Surge immunity test . 20
9.6 Electrical fast transient/burst . 20
9.7 Immunity to conducted disturbances induced by radio frequency fields . 20
9.8 Immunity to radiated disturbances induced by radio frequency fields . 20
9.9 Electrostatic discharge tests . 20
9.10 Power frequency magnetic field immunity tests . 20
9.11 Harmonics and interharmonics including mains signalling at a.c. power port, low
frequency immunity tests. 20
10 Marking, instructions . 21
10.1 Marking . 21
10.2 Instructions . 21
10.3 Warning notice . 22
Annex A (informative) Abbreviations and symbols . 23
Annex B (informative) Leak-tightness test for gas controls – volumetric method . 24
Annex C (informative) Leak-tightness test for gas controls – pressure loss method . 25
Annex D (normative) Calculation of pressure loss into leakage rate . 26
Annex E (normative) Electrical/electronic component fault modes . 27
Annex F (normative) Additional requirements for safety accessories and pressure
accessories as defined in EU Directive 2014/68/EU . 28
Annex G (normative) Materials for pressurized parts . 29
Annex H (normative) Additional materials for pressurized parts . 30
Annex I (normative) Requirements for controls used in DC supplied burners and
appliances burning gaseous or liquid fuels . 31
Annex J (normative) Method for the determination of a Safety Integrity Level (SIL) . 32
Annex K (normative) Method for the determination of a Performance Level (PL). 33
K.1 Scope . 33
K.2 Normative references . 33
K.3 Terms and definitions . 33
K.4 Performance . 33
K.4.1 Operation mode . 33
K.4.2 PL and field data evaluation . 33
K.4.3 Hardware failure tolerance (HFT) . 33
K.4.4 Common cause failure (CCF) . 33
K.4.5 Safe failure fraction (SFF) . 34
K.4.6 Determination of the B value . 34
10d
K.4.7 Determination of Performance Level (PL) . 35
K.4.8 PFH values for structures consisting of two controls . 35
D
K.5 Marking, instructions . 35
K.5.1 Marking . 35
K.5.2 Instructions . 35
K.5.3 Warning notice . 35
Annex L (informative) Relationship between Safety Integrity Level (SIL) and
Performance Level (PL) . 36
Annex M (normative) Reset functions . 37
Annex N (informative) Guidance document on Environmental Aspects . 38
Annex O (normative) Seals of elastomer, cork and synthetic fibre mixtures . 39
Annex ZA (informative) Relationship between this European Standard and the essential
requirements of Regulation (EU) 2016/426 aimed to be covered . 40
Bibliography . 43
European foreword
This document (EN 16304:2022+A1:2024) has been prepared by Technical Committee CEN/TC 58
“Safety and control devices for burners and appliances burning gaseous or liquid fuels”, the secretariat of
which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by May 2025, and conflicting national standards shall be
withdrawn at the latest by November 2027.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
This document includes Amendment 1 approved by CEN on 3 July 2024.
The start and finish of text introduced or altered by amendment is indicated in the text by tags !".
This document supersedes !EN 16304:2022.
This standard differs from EN 16304:2022 as follows:
a) Annex ZA has been brought in line with Mandate M/595."
!Deleted text"
This document has been prepared under a Standardization Request given to CEN by the European
Commission and the European Free Trade Association, and supports essential requirements of
EU Directive(s) / Regulation(s).
For relationship with EU Directive(s) / Regulation(s), see informative Annex ZA, which is an integral part
of this document.
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
Introduction
This document is intended to be used in conjunction with EN 13611:2019.
EN 13611:2019 recognizes the safety level specified by CEN/TC 58 and is regarded as a horizontal
standard dealing with the safety, construction, performance and testing of controls for burners and
appliances burning gaseous and/or liquid fuels.
The general requirements for controls are given in EN 13611:2019, and methods for classification and
assessment for new controls and control functions are given in EN 14459:2021 (see Figure 1).
EN 126:2012 (see Figure 1) specifies multifunctional controls combining two or more controls and
Application Control Functions, one of which is a mechanical control function. The requirements for
controls and Application Control Functions are given in the specific control standard (see Figure 1,
control functions).
Figure 1 — Interrelation of control standards
EN 13611:2019 should be used in conjunction with the specific standard for a specific type of control (e.g.
!EN 88-1:2022+A1:2023", !EN 88-2:2022+A1:2024", !EN 88-3:2022+A1:2024",
!EN 125:2022+A1:2024", EN 126:2012, EN 161:2022, !EN 257:2022+A1:2023", EN 298:2022,
!EN 1106:2022+A1:2023", EN 1643:2022, !EN 1854:2022+A1:2023", EN 12067-2:2022,
!EN 16304:2022+A1:2024", EN 16340:2014, EN 16678:2022 and
!EN 16898:2022+A1:2023"), or for controls for specific applications.
EN 13611:2019 can also be applied, so far as reasonable, to controls not mentioned in a specific standard
and to controls designed on new principles, in which case additional requirements can be necessary.
EN 14459:2021 provides methods for classification and assessment of new control principles.
Primarily in industrial applications it is common practice to rate the safety of a plant based on values
describing the likelihood of a dangerous failure. These values are being used to determine Safety Integrity
Levels or Performance Levels when the system is being assessed in its entirety.
CEN/TC 58 standards for safety relevant controls do go beyond this approach, because for a certain life
time for which the product is specified, designed and tested a dangerous failure is not allowed at all.
Failure modes are described and assessed in greater detail.
Measures to prevent from dangerous situations are defined. Field experience over many decades is
reflected in the CEN/TC 58 standards. Requirements of EN 13611:2019 can be considered as proven in
practice.
This document refers to clauses of EN 13611:2019 or adapts clauses by stating “with the following
modification”, “with the following addition”, “is replaced by the following” or “is not applicable” in the
corresponding clause.
This document adds clauses or subclauses to the structure of EN 13611:2019 which are particular to this
document. Subclauses which are additional to those in EN 13611:2019 are numbered starting from 101.
Additional annexes are designated as Annex AA, Annex BB, Annex CC etc. It should be noted that these
clauses, subclauses and Annexes are not indicated as an addition.
If by reference to EN 13611:2019 the term “control” is given, this term should be read as “valve”.
This document establishes methodologies for the determination of a Performance Level (PL) in
accordance with EN 13611:2019, Annexes K and L.
EN 16304 compliance for valves cannot be claimed based upon Performance Level (PL) classification
according to EN ISO 13849-1:2015 or Safety Integrity Level (SIL) classification according to
EN 61508-1:2010.
Valves with PL or SIL classification do not automatically meet the requirements of this document.
Performance Level (PL) classification according to EN ISO 13849-1:2015 or Safety Integrity Level (SIL)
classification according to EN 61508-1:2010 cannot be claimed based upon compliance with this
standard only.
1 Scope
EN 13611:2019, Clause 1 applies with the following modification and addition:
Modification:
st
The 1 paragraph of EN 13611:2019, Clause 1 is replaced by:
This document specifies the safety, design, construction, and performance requirements and testing for
automatic vent valves for burners and appliances burning one or more gaseous fuels, hereafter referred
to as “valves”.
This document is applicable to valves with declared maximum inlet pressures up to and including
500 kPa and of nominal connection sizes up to and including DN 100.
Addition:
This document is applicable to:
— electrically actuated valves;
— valves actuated by fluids where the control valves for these fluids are actuated electrically, but not to
any external electrical devices for switching the control signal or actuating energy;
— valves fitted with open position indicator switches.
th
The 4 paragraph of EN 13611:2019, Clause 1 is removed.
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
!EN 13611:2019", Safety and control devices for burners and appliances burning gaseous and/or
liquid fuels — General requirements
EN 13906-1:2013, Cylindrical helical springs made from round wire and bar — Calculation and design —
Part 1: Compression springs
EN 13906-2:2013, Cylindrical helical springs made from round wire and bar — Calculation and design —
Part 2: Extension springs
EN 60730-1:2016 , Automatic electrical controls for household and similar use — Part 1: General
requirements (IEC 60730-1:2013, modified)
EN IEC 61058-1:2018, Switches for appliances — Part 1: General requirements (IEC 61058-1:2016)
EN 175301-803:2006, Detail Specification: Rectangular connectors — Flat contacts, 0,8 mm thickness,
locking screw not detachable
As impacted by EN 60730-1:2016/A1:2019 and EN 60730-1:2016/A2:2022.
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN 13611:2019 and the following
apply.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.101
automatic vent valve
device which closes when energized and opens automatically when de-energized
3.102
actuating mechanism
part of the valve which moves the closure member
[SOURCE: EN 161:2022, 3.102]
3.103
open position indicator switch
switch fitted to a valve which indicates when the closure member is in the open position
3.104
actuating energy
required energy for the actuating mechanism to move the closure member to the closed position
Note 1 to entry: The actuating energy can have an external source (electrical, pneumatic or hydraulic) and can be
transformed inside the valve.
3.105
opening force
force required to open the valve, independent of any force provided by fuel gas pressure
3.106
frictional force
largest force required to move the actuating mechanism and the closure member from the closed position
to the open position with the opener spring removed, independent of any force provided by fuel gas
pressure
3.107
actuating pressure
hydraulic or pneumatic pressure supplied to the actuating mechanism of the valve
[SOURCE: EN 161:2022, 3.111]
3.108
opening time
time interval between de-energizing the valve and the closure member attaining the open position
3.109
closing time
time interval between energizing the valve and the closure member attaining the closed position
3.110
delay time
time interval between energizing the valve and the start of the closure member moving to the closed
position
3.111
control valve
valve, which controls the fluid (e.g. compressed air) supplied to the actuating mechanism
[SOURCE: EN 161:2022, 3.115]
3.112
power saving circuit
circuit, which reduces the power consumption of the valve during the closed phase
4 Classification
4.1 Classes of control
EN 13611:2019, 4.1 is not applicable.
4.2 Groups of control
Shall be according to EN 13611:2019, 4.2.
4.3 Classes of control functions
EN 13611:2019, 4.3 is not applicable.
4.4 Types of DC supplied controls
Shall be according to EN 13611:2019, 4.4.
5 Test conditions and uncertainty of measurements
Shall be according to EN 13611:2019, Clause 5.
6 Design and construction
6.1 General
Shall be according to EN 13611:2019, 6.1 with the following modification:
rd
The 3 paragraph of EN 13611:2019, 6.1 is not applicable.
6.2 Mechanical parts of the control
6.2.1 Appearance
Shall be according to EN 13611:2019, 6.2.1.
6.2.2 Holes
Shall be according to EN 13611:2019, 6.2.2.
6.2.3 Breather holes
Shall be according to EN 13611:2019, 6.2.3.
6.2.4 Screwed fastenings
Shall be according to EN 13611:2019, 6.2.4.
6.2.5 Jointing
Shall be according to EN 13611:2019, 6.2.5.
6.2.6 Moving parts
Shall be according to EN 13611:2019, 6.2.6.
6.2.7 Sealing caps
Shall be according to EN 13611:2019, 6.2.7.
6.2.8 Dismantling and reassembly
Shall be according to EN 13611:2019, 6.2.8.
6.2.9 Auxiliary canals and orifices
Shall be according to EN 13611:2019, 6.2.9.
6.2.10 Presetting device
Shall be according to EN 13611:2019, 6.2.10.
6.2.101 Design
There shall be no exposed shafts or operating levers which could adversely affect the ability of valves to
open.
6.2.102 Open position indicator switch
Open position indicator switches, where fitted, shall not impair the correct operation of valves. Adjusters
shall be sealed to indicate interference. Any drift of the switch and actuating mechanism from its setting
shall not impair correct valve operation. Conformity with these requirements is determined by the test
according to 7.106.3.
6.2.103 Controls assembled to a valve
Other controls assembled to a valve shall not interfere with its opening function.
6.3 Materials
6.3.1 General material requirements
Shall be according to EN 13611:2019, 6.3.1.
6.3.2 Housing
Shall be according to EN 13611:2019, 6.3.2.
6.3.3 Zinc alloys
Shall be according to EN 13611:2019, 6.3.3.
6.3.4 Springs
Shall be according to EN 13611:2019, 6.3.4.
6.3.5 Resistance to corrosion and surface protection
Shall be according to EN 13611:2019, 6.3.5.
6.3.6 Impregnation
Shall be according to EN 13611:2019, 6.3.6.
6.3.7 Seals for glands for moving parts
Shall be according to EN 13611:2019, 6.3.7.
6.3.101 Springs providing opening force
Opening force shall be provided by spring action.
Springs providing the opening force for any closure member of the valve shall be designed for static and
dynamic loading according to EN 13906-1:2013 or EN 13906-2:2013.
Springs with a diameter up to and including 2,5 mm shall be made from corrosion-resistant materials.
Springs with wire diameter above 2,5 mm shall be made either from corrosion-resistant materials or shall
be protected against corrosion.
6.3.102 Closure members
Closure members of valves above DN 25 shall either have a mechanical support (e.g. metallic) to
withstand the opening force or shall be made of metal.
6.4 Gas connections
6.4.1 Making connections
Shall be according to EN 13611:2019, 6.4.1.
6.4.2 Connection sizes
Shall be according to EN 13611:2019, 6.4.2.
6.4.3 Threads
Shall be according to EN 13611:2019, 6.4.3.
6.4.4 Union joints
Shall be according to EN 13611:2019, 6.4.4.
6.4.5 Flanges
Shall be according to EN 13611:2019, 6.4.5.
6.4.6 Compression fittings
Shall be according to EN 13611:2019, 6.4.6.
6.4.7 Nipples for pressure test
Shall be according to EN 13611:2019, 6.4.7.
6.4.8 Strainers
Shall be according to EN 13611:2019, 6.4.8.
6.5 Electrical parts of the control
6.5.1 General
Shall be according to EN 13611:2019, 6.5.1.
6.5.2 Switching elements
EN 13611:2019, 6.5.2 is not applicable.
NOTE Requirements for open position indicator switches are given in 7.105.1.
6.5.3 Electrical components
6.5.3.1 Performance of electrical components
Shall be according to EN 13611:2019, 6.5.3.1.
6.5.3.2 Tests
Shall be according to EN 13611:2019, 6.5.3.2.
6.5.3.3 Sensing element
EN 13611:2019, 6.5.3.3 is not applicable.
6.5.3.4 Gas controls employing electrical components in the gas circuit
Shall be according to EN 13611:2019, 6.5.3.4.
6.6 Protection against internal faults for the purpose of functional safety
EN 13611:2019, 6.6 is not applicable.
6.101 Pneumatic and hydraulic actuating mechanisms
Pneumatically or hydraulically actuated valves shall be provided with protection to ensure that the
blockage of an orifice in the control system does not adversely affect the relevant performance
requirements as given in Clause 7.
If the performance of the actuating mechanism depends on the quality of compressed air or hydraulic
fluid, appropriate information shall be stated in the instructions.
7 Performance
7.1 General
Shall be according to EN 13611:2019, 7.1 with the following addition:
Valves shall open automatically when de-energized or in the absence of actuating energy.
The electrical control valve of pneumatic or hydraulic actuating mechanisms shall also meet these
requirements.
The opening of pneumatically or hydraulically actuated valves shall be ensured over the range from 85 %
to 110 % of the actuating pressure or pressure range, as stated in the instructions.
All tests are conducted at room temperature, if not stated otherwise.
7.2 Leak-tightness
Shall be according to EN 13611:2019, 7.2 with the following modification:
Replace the maximum leakage rates in the column for internal leak tightness of EN 13611:2019, Table 3
by 1 dm /h.
7.3 Torsion and bending
Shall be according to EN 13611:2019, 7.3.
7.4 Rated flow rate
Shall be according to EN 13611:2019, 7.4.
7.5 Durability
Shall be according to EN 13611:2019, 7.5.
7.6 Performance tests for electronic controls
EN 13611:2019, 7.6 is not applicable.
7.7 Long-term performance for electronic controls
EN 13611:2019, 7.7 is not applicable.
7.8 Data exchange
EN 13611:2019, 7.8 is not applicable.
NOTE Valves are actuators and safety functions are hard wired.
7.101 Opening function
7.101.1 Requirement
Valves shall open automatically on reducing the voltage or current to 15 % of the minimum rated value.
Valves with pneumatic or hydraulic actuating mechanisms shall open automatically on reducing the
voltage or current to 15 % of the minimum rated voltage of the control valve.
Valves shall open automatically on removal of the voltage or current of between 15 % of the minimum
rated value and the maximum rated value increased by the tolerance according to 7.1.
In all cases, the opening time shall be in accordance with 7.103.
7.101.2 Test of opening function
Energize the valve at the maximum rated voltage or current and at the maximum actuating pressure, if
applicable. Slowly reduce the voltage or current to 15 % of the minimum rated value. Verify that the valve
has opened.
Energize the valve at the maximum rated voltage or current and at the maximum actuating pressure, if
applicable. Increase the voltage or current to the maximum rated value increased by the tolerance
according to 7.1, keeping the actuating pressure, if any, unchanged. De-energize the valve and verify that
it has opened.
7.102 Opening force
7.102.1 Requirement
Valves shall have an opening force of:
— at least 5 times the value of the frictional force where the frictional force is up to and including 5 N;
— at least 2,5 times the value of the frictional force but at least 25 N where the frictional force is
above 5 N.
The frictional force is measured in the ungreased condition.
7.102.2 Test of opening force
Measure the minimum opening force over the travel of the closure member from the closed position to
the open position.
Remove the spring(s) providing the opening force from the valve and measure the maximum force
required to move the closure member from the closed position to the open position.
7.103 Opening time
7.103.1 Requirement
The opening time for valves shall not exceed 1 s when tested to 7.103.2.
7.103.2 Test of opening time
Measure the time interval between de-energizing the valve and the closure member attaining an open
position with a flow rate, at least equal to the rated flow rate, under the following conditions:
— at the maximum inlet pressure, at the maxim
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