SIST ISO 6182-2:2018
Fire protection -- Automatic sprinkler systems -- Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
Fire protection -- Automatic sprinkler systems -- Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
This part of ISO 6182 specifies performance, requirements, methods of test and marking requirements,
for wet alarm valves, retard chambers, water motor alarms and manufacturers’ specified relevant trim
used in wet pipe automatic fire protection systems.
This part of ISO 6182 is not applicable to performance and test requirements for other auxiliary
components or attachments to alarm valves.
Protection contre l'incendie -- Systèmes d'extinction automatiques du type sprinkler -- Partie 2: Exigences et méthodes d'essai des soupapes d'alarme hydrauliques, des limiteurs de surpression et des dispositifs d'alarme à moteur hydraulique
Požarna zaščita - Avtomatski sprinklerski sistemi - 2. del: Zahteve in preskusne metode za mokre alarmne ventile, zadrževalne komore in alarmne naprave na vodni pogon
Ta del standarda ISO 6182 opredeljuje zahteve glede delovanja, preskusne metode in zahteve glede označevanja za mokre alarmne ventile, zadrževalne komore in alarmne naprave na vodni pogon ter s strani proizvajalca določeno relevantno dodatno opremo ventila (»trim«), ki se uporablja v mokrih avtomatskih sistemih za požarno zaščito.
Ta del standarda ISO 6182 se ne uporablja za zahteve glede delovanja in preskušanja za druge dodatne komponente ali priključke na alarmne ventile.
General Information
Relations
Standards Content (Sample)
INTERNATIONAL ISO
STANDARD 6182-2
Third edition
2012-12-01
Fire protection — Automatic
sprinkler systems —
Part 2:
Requirements and test methods for
wet alarm valves, retard chambers
and water motor alarms
Protection contre l’incendie — Systèmes d’extinction automatiques du
type sprinkler —
Partie 2: Exigences et méthodes d’essai des soupapes d’alarme
hydrauliques, des limiteurs de surpression et des dispositifs d’alarme à
moteur hydraulique
Reference number
ISO 6182-2:2012(E)
©
ISO 2012
---------------------- Page: 1 ----------------------
ISO 6182-2:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 2 ----------------------
ISO 6182-2:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Nominal sizes . 3
4.2 Connections . 3
4.3 Rated working pressure . 3
4.4 Bodies and covers . 3
4.5 Strength (see 6.9) . 4
4.6 Access for maintenance . 4
4.7 Components . 4
4.8 Leakage (see 6.8) . 5
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts) (see 6.4
and 6.5) . 5
4.10 Sealing assembly elements (see 6.3). 5
4.11 Clearances . 5
4.12 Hydraulic friction loss (see 6.7) . 7
4.13 Endurance (see 6.6) . 8
4.14 Operational performance (see 6.10) . 8
4.15 Drains . 9
4.16 Alarms (see 6.10.2) . 9
4.17 Retard device (see 6.12) . 9
4.18 Water motor alarms (see 6.11) .10
5 Production testing and quality control .11
6 Tests .12
6.1 Samples .12
6.2 Spring and diaphragm test .12
6.3 Sealing element tests (see 4.10) .12
6.4 Warm water aging test for non-metallic components (excluding gaskets and seals and
other elastomeric parts) (see 4.9) .14
6.5 Air aging test for non-metallic components (excluding gaskets and seals and other
elastomeric parts) (see 4.9) .14
6.6 Endurance test (see 4.13) .15
6.7 Hydraulic friction loss test (see 4.12) .15
6.8 Valve leakage and deformation tests (see 4.8) .15
6.9 Body strength test (see 4.5) .16
6.10 Operational test (see 4.14) .16
6.11 Water motor alarm tests (see 4.16) .17
6.12 Retard chamber tests (see 4.17) .18
6.13 Salt mist corrosion test .18
7 Marking .18
8 Manufacturer’s installation instructions .19
Annex A (normative) Tolerances .20
© ISO 2012 – All rights reserved iii
---------------------- Page: 3 ----------------------
ISO 6182-2:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 6182-2 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire
fighting, Subcommittee SC 5, Fixed firefighting systems using water.
This third edition cancels and replaces the second edition (ISO 6182-2:2005), which has been
technically revised.
ISO 6182 consists of the following parts, under the general title Fire protection — Automatic sprinkler systems:
— Part 1: Requirements and test methods for sprinklers
— Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
— Part 3: Requirements and test methods for dry pipe valves
— Part 4: Requirements and test methods for quick-opening devices
— Part 5: Requirements and test methods for deluge valves
— Part 6: Requirements and test methods for check valves
— Part 7: Requirements and test methods for early suppression fast response (ESFR) sprinklers
— Part 8: Requirements and test methods for pre-action dry alarm valves
— Part 9: Requirements and test methods for water mist nozzles
— Part 10: Requirements and test methods for domestic sprinklers
— Part 11: Requirements and test methods for pipe hangers
— Part 12: Requirements and test methods for grooved-end components for steel pipe systems
iv © ISO 2012 – All rights reserved
---------------------- Page: 4 ----------------------
INTERNATIONAL STANDARD ISO 6182-2:2012(E)
Fire protection — Automatic sprinkler systems —
Part 2:
Requirements and test methods for wet alarm valves,
retard chambers and water motor alarms
1 Scope
This part of ISO 6182 specifies performance, requirements, methods of test and marking requirements,
for wet alarm valves, retard chambers, water motor alarms and manufacturers’ specified relevant trim
used in wet pipe automatic fire protection systems.
This part of ISO 6182 is not applicable to performance and test requirements for other auxiliary
components or attachments to alarm valves.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws
and studs with specified property classes — Coarse thread and fine pitch thread
ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with
specified property classes — Coarse thread and fine pitch thread
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
alarm device
mechanical or electrical device which sounds an alarm upon operation of the valve
3.2
clapper
type of sealing assembly
NOTE See also 3.13.
3.3
compensator
external or internal device such as an auxiliary valve that minimizes false alarms caused by a small
increase of service pressure
3.4
corrosion-resistant material
bronze, brass, Monel metal, austenitic stainless steel, or equivalent metallic or plastic material
conforming with the requirements of this part of ISO 6182
NOTE Monel is an example of a suitable product available commercially. This information is given for the
convenience of users of this part of ISO 6182 and does not constitute an endorsement by ISO of this product.
© ISO 2012 – All rights reserved 1
---------------------- Page: 5 ----------------------
ISO 6182-2:2012(E)
3.5
flow velocity
speed of water flow through a valve expressed as the equivalent water velocity through a pipe of the
same nominal size as the valve
3.6
minimum opening pressure
the minimum pressure when water begins to pass through the valve
3.7
rated working pressure
maximum service pressure at which a valve or retard chamber is intended to operate
3.8
ready (set) condition
state of a valve with the sealing assembly in the closed or set position with service and system
pressure applied
3.9
reinforced elastomeric element
element of clapper, clapper assembly or seat seals in a composite of an elastomeric compound with one
or more other components
3.10
retard chamber
volumetric type of retard device designed to minimize false alarms caused by surges and fluctuations
in sprinkler system water supplies
3.11
retard device
pneumatic, hydraulic or electric timer designed to minimize false alarms caused by surges and
fluctuations in sprinkler system water supplies
3.12
retard time
difference in time for actuation of alarm devices, measured from the passage of water through the wet
alarm valve port, with and without the retard chamber
3.13
sealing assembly
main movable sealing element (such as a clapper) of the valve which prevents the reverse flow of water
3.14
sealing assembly seat ring
main fixed sealing element of a valve which prevents the reverse flow of water
3.15
sensitivity
minimum rate of flow from a system outlet which will open the wet alarm valve, as indicated by
satisfactory operation of alarms
3.16
service pressure
static water pressure at the inlet to a valve when the valve is in the ready condition
3.17
system pressure
static water pressure at the main outlet of a valve when the valve is in the ready condition
2 © ISO 2012 – All rights reserved
---------------------- Page: 6 ----------------------
ISO 6182-2:2012(E)
3.18
trim
external equipment and pipework, excluding the main installation pipework, fitted to the valve
3.19
waste of water
discharge of any water from the alarm port of a valve that is in the ready condition
3.20
water motor alarm
hydraulically actuated device which provides a local audible alarm as a result of a flow through an alarm
valve
3.21
wet alarm valve
valve that permits flow of water into a wet sprinkler system, prevents the reverse flow of water and
incorporates provision for actuation of an alarm under specified flow conditions
3.22
wet pipe system
automatic fire protection system in which the piping contains water and is connected to a water supply
so that water discharges upon operation of the sprinklers
4 Requirements
4.1 Nominal sizes
The nominal size of a valve shall be the nominal diameter of the inlet and outlet connections, i.e. the
pipe size for which the connections are intended. Sizes shall be 40 mm, 50 mm, 65 mm, 80 mm, 100 mm,
125 mm, 150 mm, 200 mm or 250 mm. The diameter of the waterway through the sealing assembly seat
ring shall be permitted to be less than the nominal size.
4.2 Connections
4.2.1 All connections shall be designed for use at the rated working pressure of the valve.
4.2.2 The dimensions of all connections shall conform with the applicable requirements of International
Standards. If International Standards are not applicable, National standards shall be permitted to be used.
4.2.3 An opening not smaller than 15 mm nominal diameter shall be provided for a water motor alarm
line connection.
4.3 Rated working pressure
4.3.1 The rated working pressure shall be not less than 1,2 MPa (12 bar).
4.3.2 Inlet and outlet connections shall be permitted to be machined for lower working pressures to
match installation equipment provided the valve is marked with the lower working pressure. See 7.3 f).
4.4 Bodies and covers
4.4.1 The body and cover shall be made of a material having corrosion resistance at least equivalent
to cast iron.
© ISO 2012 – All rights reserved 3
---------------------- Page: 7 ----------------------
ISO 6182-2:2012(E)
4.4.2 Cover fasteners shall be made of steel, stainless steel, titanium, or other materials with equivalent
physical and mechanical properties.
4.4.3 Non-metallic materials other than gaskets, diaphragms and seals or metals with a melting point
less than 800 °C shall not form part of the valve body or cover.
4.4.4 It shall not be possible to assemble the valve with the cover plate in a position which either
improperly indicates flow direction or prevents proper operation of the valve.
4.5 Strength (see 6.9)
4.5.1 An assembled valve, with the sealing assembly blocked open, shall withstand, without rupture, an
internal hydrostatic pressure of four times the rated working pressure for a period of 5 min, when tested
as specified in 6.9.
4.5.2 If the test in accordance with 6.9 is not done with standard production fasteners, the supplier
shall provide documentation showing that the calculated design load of any standard production fastener,
neglecting the force required to compress the gasket, does not exceed the minimum tensile strength
specified in ISO 898-1 and ISO 898-2 when the valve is pressurized to four times the rated working
pressure. The area of the application of pressure shall be calculated as follows.
a) If a full-face gasket is used, the area of application of pressure is that extending out to a line defined
by the inner edge of the bolts.
b) If an “O”-ring seal or ring gasket is used, the area of application of force is that extending out to the
centre line of the “O”-ring or gasket.
4.6 Access for maintenance
Means shall be provided to permit access to working parts and removal of the sealing assembly. Any
method adopted shall permit ready maintenance by one person with a minimum of down time.
4.7 Components
4.7.1 Any component which is normally disassembled during servicing shall be designed so that it
cannot be reassembled improperly without providing an external visual indication, when the valve is
returned to service.
4.7.2 With the exception of valve seats, all parts intended for field replacement shall be capable of being
disassembled and reassembled using tools normally employed by the trade.
4.7.3 All components shall be non-detachable during normal operation of the valve.
4.7.4 Failure of the sealing assembly diaphragms or seals shall not prevent the valve from opening.
4.7.5 Sealing surfaces of sealing assemblies, including the sealing assembly seat ring, shall have
corrosion resistance equivalent to brass or bronze and have sufficient width of surface contact to
withstand ordinary wear and tear, rough usage, compression stresses and damage due to pipe scale or
foreign matter carried by the water.
4.7.6 Springs and diaphragms shall not fracture or rupture, when tested in accordance with 6.2.
4.7.7 There shall be no sign, on visual examination, of damage to the sealing assembly after testing for
the operational requirements of 4.14 in accordance with 6.10.
4 © ISO 2012 – All rights reserved
---------------------- Page: 8 ----------------------
ISO 6182-2:2012(E)
4.7.8 When wide open, the sealing assembly shall bear against a definite stop. The point of contact shall be
located so that impact or reaction of the water flow will not permanently twist, bend or fracture valve parts.
4.7.9 Where rotation or sliding motion is required, the part or its bearing shall be made of a corrosion
resistant material. Materials lacking corrosion resistance shall be fitted with bushings, inserts or other
parts made of corrosion resistant materials at those points where freedom of movement is required.
4.7.10 The sealing assembly shall close towards the seat when water flow ceases. Springs shall be
permitted to ensure full and proper seating.
4.8 Leakage (see 6.8)
4.8.1 There shall be no leakage, permanent distortion or rupture of a valve when an internal pressure of
twice the rated working pressure is applied for 5 min with the sealing assembly open in accordance with 6.8.1.
4.8.2 There shall be no leakage, permanent distortion or rupture of a valve at an internal pressure of
twice the rated working pressure applied to the downstream side of the sealing assembly for 5 min with
the upstream end vented in accordance with 6.8.2.1.
4.8.3 A valve shall not leak while being subjected to an internal hydrostatic pressure equivalent to a
column of water 1,5 m high for 16 h in accordance with 6.8.2.2.
4.8.4 Sealing surfaces shall prevent leakage of water into the alarm port when the valve is tested in the
ready position in accordance with 6.10.
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts)
(see 6.4 and 6.5)
Non-metallic valve parts that may affect proper valve function as defined in this part of ISO 6182 shall
be subjected to the applicable ageing of its non-metallic parts, as described in 6.4 and 6.5, using separate
sets of samples, as applicable. After aging, a valve shall meet the requirements of 4.8, 4.13 and 4.14.4
when tested in accordance with the applicable tests described in 6.6, 6.8 and 6.10.
4.10 Sealing assembly elements (see 6.3)
A seal made of elastomeric or other resilient materials shall not adhere to the mating surface when
tested in accordance with 6.3.1. Where the same design of seat is used for more than one size of valve, it
shall be permitted to only test the size with the highest stress on the seating surface.
4.11 Clearances
The requirements in Clause 4.11 are applicable to hinged, clapper-type valves only.
4.11.1 The radial clearance between a hinged sealing assembly and the inside walls in every position,
except wide open, shall not be less than 12 mm for cast iron bodies and shall not be less than 6 mm if the
body and sealing assembly are of cast iron or steel with corrosion protective coatings tested in accordance
with 6.13, non-ferrous material, stainless steel or materials having equivalent physical, mechanical and
corrosion resistant properties. See Figure 1 a).
4.11.2 There shall be a diametrical clearance of not less than 3 mm between the inner edges of a seat ring
and the metal parts of a hinged sealing assembly when the valve is in the closed position. See Figure 1 b).
4.11.3 Any space in which the sealing assembly can trap debris beyond the seat shall be not less than
3 mm deep.
© ISO 2012 – All rights reserved 5
---------------------- Page: 9 ----------------------
ISO 6182-2:2012(E)
4.11.4 The diametrical clearance between hinge pins and their bearings shall be not less than 0,125 mm.
4.11.5 The total axial clearance between the clapper hinge and adjacent valve body bearing surfaces
shall be not less than 0,25 mm. See Figure 1 c) or Figure 1 d).
4.11.6 Any reciprocating guide components, which are essential to allow a valve to open, shall have a
minimum diametrical clearance of not less than 0,7 mm in that portion over which the moving component
enters the fixed component and of not less than 0,05 mm in that portion of the moving component
continuously in contact with the fixed component in the ready (set) position.
4.11.7 Sealing assembly guide bushings or hinge-pin bearings shall project a sufficient axial distance to
maintain not less than 1,5 mm (Bushing Projection) clearance between ferrous metal parts. See Figure 1.
Clearance less than 1,5 mm shall be permitted where adjacent parts are of bronze, brass, Monel metal,
austenitic stainless steel, titanium, or similar corrosion resistant materials. When corrosion resistance
of steel parts is provided by a protective coating, the parts shall show no visible signs of deterioration of
the coating such as blistering, delamination, flaking or increased resistance to movement when tested in
accordance with 6.13.
4.11.8 If provided, a compensator shall be designed such that deposits or sediment will not readily
accumulate to an extent sufficient to interfere with its proper operation. There shall be sufficient
clearances between the working parts to allow proper sealing of the main and any auxiliary valves.
a) Radial clearance, C = R − R
R 2 1
b) Diametrical clearance, C = D − D
D 2 1
6 © ISO 2012 – All rights reserved
---------------------- Page: 10 ----------------------
ISO 6182-2:2012(E)
c) Total axial clearance, C ; C = L − L ; Bushing Projection = (L − L )/2
TA TA 2 1 3 2
d) Total axial clearance, C C = L - L ; Bushing projection = (L − L )/2 + (L − L )/2
TA ( TA 2 4) 3 2 4 1
Key
1 valve body
2 pin
3 sealing assembly
4 bushings
Figure 1 — Types of clearances
4.12 Hydraulic friction loss (see 6.7)
The pressure loss across the valve at the appropriate flow given in Table 1, when tested by the method of
6.7 shall not exceed the pressure loss published in the manufacturer’s installation instructions. See 8.1.
Table 1 — Required flow rates for pressure drop determination
Nominal valve size Flow rate
mm l/min
40 380
© ISO 2012 – All rights reserved 7
---------------------- Page: 11 ----------------------
ISO 6182-2:2012(E)
Table 1 (continued)
Nominal valve size Flow rate
mm l/min
50 590
65 1 000
80 1 510
100 2 360
125 3 680
150 5 300
200 9 920
250 14 720
4.13 Endurance (see 6.6)
The valve and its moving parts shall show no sign of distortion, cracks, loosening, separation or other
sign of failure, following 30 min of water flow in accordance with 6.6.
4.14 Operational performance (see 6.10)
4.14.1 The valve shall operate correctly, without adjustment, at service pressures within the range of
0,14 MPa (1,4 bar) to the rated working pressure and flow velocities up to 5 m/s, when tested to meet the
requirements of this subclause.
4.14.2 The valve shall meet the requirements of 4.14.3 and 4.14.4 when tested before and after the
hydrostatic pressure test.
4.14.3 The valve with associated trim shall not signal an alarm when discharge takes place downstream
from the wet alarm valve at a flow rate of 15 l/min with a service pressure of 0,14 MPa (1,4 bar) when
tested in accordance with 6.10.2.2.
4.14.4 The valve with associated fittings shall signal an alarm when continuous discharge takes place
downstream from the wet alarm valve at the following flow rates when tested in accordance with 6.10.2.2.
a) 60 l/min at a service pressure of 0,14 MPa (1,4 bar);
b) 80 l/min at a service pressure of 0,7 MPa (7 bar);
c) 170 l/min at a service pressure of 1,2 MPa (12 bar);
d) 170 l/min at rated working pressure, when the rated working pressure is higher than 1,2 MPa (12 bar).
4.14.5 Valves without a retard device shall initiate continuous operation of mechanical and electrical
alarm devices within 15 sec from the time that the downstream valve is opened. Wet alarm valves with
retard devices shall initiate continuous operation of electrical and mechanical alarm devices within a
maximum of 90 sec after the wet alarm valve opens, when tested in accordance with 6.10.2.2.
4.14.6 The ratio of service pressure to system pressure shall not exceed 1,16:1 at service pressures of
0,14 MPa (1,4 bar), 0,7 MPa (7 bar), 1,2 MPa (12 bar) and rated working pressure where applicable, as
measured by the opening of the sealing assembly and pressure equalization upstream and downstream
of the sealing assembly when tested in accordance with 6.10.2.1.
8 © ISO 2012 – All rights reserved
---------------------- Page: 12 ----------------------
ISO 6182-2:2012(E)
4.14.7 The valve shall stop water flow to alarm devices on cessation of water flow downstream of the
valve when tested in accordance with 6.10.2.2.
4.14.8 The valve shall transmit successive
...
SLOVENSKI STANDARD
SIST ISO 6182-2:2018
01-september-2018
1DGRPHãþD
SIST ISO 6182-2:1995
3RåDUQD]DãþLWD$YWRPDWVNLVSULQNOHUVNLVLVWHPLGHO =DKWHYHLQSUHVNXVQH
PHWRGH]DPRNUHDODUPQHYHQWLOH]DGUåHYDOQHNRPRUHLQDODUPQHQDSUDYHQD
YRGQLSRJRQ
Fire protection -- Automatic sprinkler systems -- Part 2: Requirements and test methods
for wet alarm valves, retard chambers and water motor alarms
Protection contre l'incendie -- Systèmes d'extinction automatiques du type sprinkler --
Partie 2: Exigences et méthodes d'essai des soupapes d'alarme hydrauliques, des
limiteurs de surpression et des dispositifs d'alarme à moteur hydraulique
Ta slovenski standard je istoveten z: ISO 6182-2:2012
ICS:
13.220.20 3RåDUQD]DãþLWD Fire protection
SIST ISO 6182-2:2018 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST ISO 6182-2:2018
---------------------- Page: 2 ----------------------
SIST ISO 6182-2:2018
INTERNATIONAL ISO
STANDARD 6182-2
Third edition
2012-12-01
Fire protection — Automatic
sprinkler systems —
Part 2:
Requirements and test methods for
wet alarm valves, retard chambers
and water motor alarms
Protection contre l’incendie — Systèmes d’extinction automatiques du
type sprinkler —
Partie 2: Exigences et méthodes d’essai des soupapes d’alarme
hydrauliques, des limiteurs de surpression et des dispositifs d’alarme à
moteur hydraulique
Reference number
ISO 6182-2:2012(E)
©
ISO 2012
---------------------- Page: 3 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2012
All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any
means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the
address below or ISO’s member body in the country of the requester.
ISO copyright office
Case postale 56 • CH-1211 Geneva 20
Tel. + 41 22 749 01 11
Fax + 41 22 749 09 47
E-mail copyright@iso.org
Web www.iso.org
Published in Switzerland
ii © ISO 2012 – All rights reserved
---------------------- Page: 4 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 3
4.1 Nominal sizes . 3
4.2 Connections . 3
4.3 Rated working pressure . 3
4.4 Bodies and covers . 3
4.5 Strength (see 6.9) . 4
4.6 Access for maintenance . 4
4.7 Components . 4
4.8 Leakage (see 6.8) . 5
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts) (see 6.4
and 6.5) . 5
4.10 Sealing assembly elements (see 6.3). 5
4.11 Clearances . 5
4.12 Hydraulic friction loss (see 6.7) . 7
4.13 Endurance (see 6.6) . 8
4.14 Operational performance (see 6.10) . 8
4.15 Drains . 9
4.16 Alarms (see 6.10.2) . 9
4.17 Retard device (see 6.12) . 9
4.18 Water motor alarms (see 6.11) .10
5 Production testing and quality control .11
6 Tests .12
6.1 Samples .12
6.2 Spring and diaphragm test .12
6.3 Sealing element tests (see 4.10) .12
6.4 Warm water aging test for non-metallic components (excluding gaskets and seals and
other elastomeric parts) (see 4.9) .14
6.5 Air aging test for non-metallic components (excluding gaskets and seals and other
elastomeric parts) (see 4.9) .14
6.6 Endurance test (see 4.13) .15
6.7 Hydraulic friction loss test (see 4.12) .15
6.8 Valve leakage and deformation tests (see 4.8) .15
6.9 Body strength test (see 4.5) .16
6.10 Operational test (see 4.14) .16
6.11 Water motor alarm tests (see 4.16) .17
6.12 Retard chamber tests (see 4.17) .18
6.13 Salt mist corrosion test .18
7 Marking .18
8 Manufacturer’s installation instructions .19
Annex A (normative) Tolerances .20
© ISO 2012 – All rights reserved iii
---------------------- Page: 5 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards
bodies (ISO member bodies). The work of preparing International Standards is normally carried out
through ISO technical committees. Each member body interested in a subject for which a technical
committee has been established has the right to be represented on that committee. International
organizations, governmental and non-governmental, in liaison with ISO, also take part in the work.
ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of
electrotechnical standardization.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International
Standards adopted by the technical committees are circulated to the member bodies for voting.
Publication as an International Standard requires approval by at least 75 % of the member bodies
casting a vote.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. ISO shall not be held responsible for identifying any or all such patent rights.
ISO 6182-2 was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire
fighting, Subcommittee SC 5, Fixed firefighting systems using water.
This third edition cancels and replaces the second edition (ISO 6182-2:2005), which has been
technically revised.
ISO 6182 consists of the following parts, under the general title Fire protection — Automatic sprinkler systems:
— Part 1: Requirements and test methods for sprinklers
— Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
— Part 3: Requirements and test methods for dry pipe valves
— Part 4: Requirements and test methods for quick-opening devices
— Part 5: Requirements and test methods for deluge valves
— Part 6: Requirements and test methods for check valves
— Part 7: Requirements and test methods for early suppression fast response (ESFR) sprinklers
— Part 8: Requirements and test methods for pre-action dry alarm valves
— Part 9: Requirements and test methods for water mist nozzles
— Part 10: Requirements and test methods for domestic sprinklers
— Part 11: Requirements and test methods for pipe hangers
— Part 12: Requirements and test methods for grooved-end components for steel pipe systems
iv © ISO 2012 – All rights reserved
---------------------- Page: 6 ----------------------
SIST ISO 6182-2:2018
INTERNATIONAL STANDARD ISO 6182-2:2012(E)
Fire protection — Automatic sprinkler systems —
Part 2:
Requirements and test methods for wet alarm valves,
retard chambers and water motor alarms
1 Scope
This part of ISO 6182 specifies performance, requirements, methods of test and marking requirements,
for wet alarm valves, retard chambers, water motor alarms and manufacturers’ specified relevant trim
used in wet pipe automatic fire protection systems.
This part of ISO 6182 is not applicable to performance and test requirements for other auxiliary
components or attachments to alarm valves.
2 Normative references
The following referenced documents are indispensable for the application 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.
ISO 898-1, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 1: Bolts, screws
and studs with specified property classes — Coarse thread and fine pitch thread
ISO 898-2, Mechanical properties of fasteners made of carbon steel and alloy steel — Part 2: Nuts with
specified property classes — Coarse thread and fine pitch thread
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
alarm device
mechanical or electrical device which sounds an alarm upon operation of the valve
3.2
clapper
type of sealing assembly
NOTE See also 3.13.
3.3
compensator
external or internal device such as an auxiliary valve that minimizes false alarms caused by a small
increase of service pressure
3.4
corrosion-resistant material
bronze, brass, Monel metal, austenitic stainless steel, or equivalent metallic or plastic material
conforming with the requirements of this part of ISO 6182
NOTE Monel is an example of a suitable product available commercially. This information is given for the
convenience of users of this part of ISO 6182 and does not constitute an endorsement by ISO of this product.
© ISO 2012 – All rights reserved 1
---------------------- Page: 7 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
3.5
flow velocity
speed of water flow through a valve expressed as the equivalent water velocity through a pipe of the
same nominal size as the valve
3.6
minimum opening pressure
the minimum pressure when water begins to pass through the valve
3.7
rated working pressure
maximum service pressure at which a valve or retard chamber is intended to operate
3.8
ready (set) condition
state of a valve with the sealing assembly in the closed or set position with service and system
pressure applied
3.9
reinforced elastomeric element
element of clapper, clapper assembly or seat seals in a composite of an elastomeric compound with one
or more other components
3.10
retard chamber
volumetric type of retard device designed to minimize false alarms caused by surges and fluctuations
in sprinkler system water supplies
3.11
retard device
pneumatic, hydraulic or electric timer designed to minimize false alarms caused by surges and
fluctuations in sprinkler system water supplies
3.12
retard time
difference in time for actuation of alarm devices, measured from the passage of water through the wet
alarm valve port, with and without the retard chamber
3.13
sealing assembly
main movable sealing element (such as a clapper) of the valve which prevents the reverse flow of water
3.14
sealing assembly seat ring
main fixed sealing element of a valve which prevents the reverse flow of water
3.15
sensitivity
minimum rate of flow from a system outlet which will open the wet alarm valve, as indicated by
satisfactory operation of alarms
3.16
service pressure
static water pressure at the inlet to a valve when the valve is in the ready condition
3.17
system pressure
static water pressure at the main outlet of a valve when the valve is in the ready condition
2 © ISO 2012 – All rights reserved
---------------------- Page: 8 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
3.18
trim
external equipment and pipework, excluding the main installation pipework, fitted to the valve
3.19
waste of water
discharge of any water from the alarm port of a valve that is in the ready condition
3.20
water motor alarm
hydraulically actuated device which provides a local audible alarm as a result of a flow through an alarm
valve
3.21
wet alarm valve
valve that permits flow of water into a wet sprinkler system, prevents the reverse flow of water and
incorporates provision for actuation of an alarm under specified flow conditions
3.22
wet pipe system
automatic fire protection system in which the piping contains water and is connected to a water supply
so that water discharges upon operation of the sprinklers
4 Requirements
4.1 Nominal sizes
The nominal size of a valve shall be the nominal diameter of the inlet and outlet connections, i.e. the
pipe size for which the connections are intended. Sizes shall be 40 mm, 50 mm, 65 mm, 80 mm, 100 mm,
125 mm, 150 mm, 200 mm or 250 mm. The diameter of the waterway through the sealing assembly seat
ring shall be permitted to be less than the nominal size.
4.2 Connections
4.2.1 All connections shall be designed for use at the rated working pressure of the valve.
4.2.2 The dimensions of all connections shall conform with the applicable requirements of International
Standards. If International Standards are not applicable, National standards shall be permitted to be used.
4.2.3 An opening not smaller than 15 mm nominal diameter shall be provided for a water motor alarm
line connection.
4.3 Rated working pressure
4.3.1 The rated working pressure shall be not less than 1,2 MPa (12 bar).
4.3.2 Inlet and outlet connections shall be permitted to be machined for lower working pressures to
match installation equipment provided the valve is marked with the lower working pressure. See 7.3 f).
4.4 Bodies and covers
4.4.1 The body and cover shall be made of a material having corrosion resistance at least equivalent
to cast iron.
© ISO 2012 – All rights reserved 3
---------------------- Page: 9 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
4.4.2 Cover fasteners shall be made of steel, stainless steel, titanium, or other materials with equivalent
physical and mechanical properties.
4.4.3 Non-metallic materials other than gaskets, diaphragms and seals or metals with a melting point
less than 800 °C shall not form part of the valve body or cover.
4.4.4 It shall not be possible to assemble the valve with the cover plate in a position which either
improperly indicates flow direction or prevents proper operation of the valve.
4.5 Strength (see 6.9)
4.5.1 An assembled valve, with the sealing assembly blocked open, shall withstand, without rupture, an
internal hydrostatic pressure of four times the rated working pressure for a period of 5 min, when tested
as specified in 6.9.
4.5.2 If the test in accordance with 6.9 is not done with standard production fasteners, the supplier
shall provide documentation showing that the calculated design load of any standard production fastener,
neglecting the force required to compress the gasket, does not exceed the minimum tensile strength
specified in ISO 898-1 and ISO 898-2 when the valve is pressurized to four times the rated working
pressure. The area of the application of pressure shall be calculated as follows.
a) If a full-face gasket is used, the area of application of pressure is that extending out to a line defined
by the inner edge of the bolts.
b) If an “O”-ring seal or ring gasket is used, the area of application of force is that extending out to the
centre line of the “O”-ring or gasket.
4.6 Access for maintenance
Means shall be provided to permit access to working parts and removal of the sealing assembly. Any
method adopted shall permit ready maintenance by one person with a minimum of down time.
4.7 Components
4.7.1 Any component which is normally disassembled during servicing shall be designed so that it
cannot be reassembled improperly without providing an external visual indication, when the valve is
returned to service.
4.7.2 With the exception of valve seats, all parts intended for field replacement shall be capable of being
disassembled and reassembled using tools normally employed by the trade.
4.7.3 All components shall be non-detachable during normal operation of the valve.
4.7.4 Failure of the sealing assembly diaphragms or seals shall not prevent the valve from opening.
4.7.5 Sealing surfaces of sealing assemblies, including the sealing assembly seat ring, shall have
corrosion resistance equivalent to brass or bronze and have sufficient width of surface contact to
withstand ordinary wear and tear, rough usage, compression stresses and damage due to pipe scale or
foreign matter carried by the water.
4.7.6 Springs and diaphragms shall not fracture or rupture, when tested in accordance with 6.2.
4.7.7 There shall be no sign, on visual examination, of damage to the sealing assembly after testing for
the operational requirements of 4.14 in accordance with 6.10.
4 © ISO 2012 – All rights reserved
---------------------- Page: 10 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
4.7.8 When wide open, the sealing assembly shall bear against a definite stop. The point of contact shall be
located so that impact or reaction of the water flow will not permanently twist, bend or fracture valve parts.
4.7.9 Where rotation or sliding motion is required, the part or its bearing shall be made of a corrosion
resistant material. Materials lacking corrosion resistance shall be fitted with bushings, inserts or other
parts made of corrosion resistant materials at those points where freedom of movement is required.
4.7.10 The sealing assembly shall close towards the seat when water flow ceases. Springs shall be
permitted to ensure full and proper seating.
4.8 Leakage (see 6.8)
4.8.1 There shall be no leakage, permanent distortion or rupture of a valve when an internal pressure of
twice the rated working pressure is applied for 5 min with the sealing assembly open in accordance with 6.8.1.
4.8.2 There shall be no leakage, permanent distortion or rupture of a valve at an internal pressure of
twice the rated working pressure applied to the downstream side of the sealing assembly for 5 min with
the upstream end vented in accordance with 6.8.2.1.
4.8.3 A valve shall not leak while being subjected to an internal hydrostatic pressure equivalent to a
column of water 1,5 m high for 16 h in accordance with 6.8.2.2.
4.8.4 Sealing surfaces shall prevent leakage of water into the alarm port when the valve is tested in the
ready position in accordance with 6.10.
4.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts)
(see 6.4 and 6.5)
Non-metallic valve parts that may affect proper valve function as defined in this part of ISO 6182 shall
be subjected to the applicable ageing of its non-metallic parts, as described in 6.4 and 6.5, using separate
sets of samples, as applicable. After aging, a valve shall meet the requirements of 4.8, 4.13 and 4.14.4
when tested in accordance with the applicable tests described in 6.6, 6.8 and 6.10.
4.10 Sealing assembly elements (see 6.3)
A seal made of elastomeric or other resilient materials shall not adhere to the mating surface when
tested in accordance with 6.3.1. Where the same design of seat is used for more than one size of valve, it
shall be permitted to only test the size with the highest stress on the seating surface.
4.11 Clearances
The requirements in Clause 4.11 are applicable to hinged, clapper-type valves only.
4.11.1 The radial clearance between a hinged sealing assembly and the inside walls in every position,
except wide open, shall not be less than 12 mm for cast iron bodies and shall not be less than 6 mm if the
body and sealing assembly are of cast iron or steel with corrosion protective coatings tested in accordance
with 6.13, non-ferrous material, stainless steel or materials having equivalent physical, mechanical and
corrosion resistant properties. See Figure 1 a).
4.11.2 There shall be a diametrical clearance of not less than 3 mm between the inner edges of a seat ring
and the metal parts of a hinged sealing assembly when the valve is in the closed position. See Figure 1 b).
4.11.3 Any space in which the sealing assembly can trap debris beyond the seat shall be not less than
3 mm deep.
© ISO 2012 – All rights reserved 5
---------------------- Page: 11 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
4.11.4 The diametrical clearance between hinge pins and their bearings shall be not less than 0,125 mm.
4.11.5 The total axial clearance between the clapper hinge and adjacent valve body bearing surfaces
shall be not less than 0,25 mm. See Figure 1 c) or Figure 1 d).
4.11.6 Any reciprocating guide components, which are essential to allow a valve to open, shall have a
minimum diametrical clearance of not less than 0,7 mm in that portion over which the moving component
enters the fixed component and of not less than 0,05 mm in that portion of the moving component
continuously in contact with the fixed component in the ready (set) position.
4.11.7 Sealing assembly guide bushings or hinge-pin bearings shall project a sufficient axial distance to
maintain not less than 1,5 mm (Bushing Projection) clearance between ferrous metal parts. See Figure 1.
Clearance less than 1,5 mm shall be permitted where adjacent parts are of bronze, brass, Monel metal,
austenitic stainless steel, titanium, or similar corrosion resistant materials. When corrosion resistance
of steel parts is provided by a protective coating, the parts shall show no visible signs of deterioration of
the coating such as blistering, delamination, flaking or increased resistance to movement when tested in
accordance with 6.13.
4.11.8 If provided, a compensator shall be designed such that deposits or sediment will not readily
accumulate to an extent sufficient to interfere with its proper operation. There shall be sufficient
clearances between the working parts to allow proper sealing of the main and any auxiliary valves.
a) Radial clearance, C = R − R
R 2 1
b) Diametrical clearance, C = D − D
D 2 1
6 © ISO 2012 – All rights reserved
---------------------- Page: 12 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
c) Total axial clearance, C ; C = L − L ; Bushing Projection = (L − L )/2
TA TA 2 1 3 2
d) Total axial clearance, C C = L - L ; Bushing projection = (L − L )/2 + (L − L )/2
TA ( TA 2 4) 3 2 4 1
Key
1 valve body
2 pin
3 sealing assembly
4 bushings
Figure 1 — Types of clearances
4.12 Hydraulic friction loss (see 6.7)
The pressure loss across the valve at the appropriate flow given in Table 1, when tested by the method of
6.7 shall not exceed the pressure loss published in the manufacturer’s installation instructions. See 8.1.
Table 1 — Required flow rates for pressure drop determination
Nominal valve size Flow rate
mm l/min
40 380
© ISO 2012 – All rights reserved 7
---------------------- Page: 13 ----------------------
SIST ISO 6182-2:2018
ISO 6182-2:2012(E)
Table 1 (continued)
Nominal valve size Flow rate
mm l/min
50 590
65 1 000
80 1 510
100 2 360
125 3 680
150 5 300
200 9 920
250 14 720
4.13 Endurance (see 6.6)
The valve and its moving parts shall show no sign of distortion, cracks, loosening, separation or other
sign of failure, following 30 min of water flow in accordance with 6.6.
4.14 Operational performance (see 6.10)
4.14.1 The valve shall operate correctly, without adjustment, at service pressures within the range of
0,14 MPa (1,4 bar) to the rated working pressure and flow velocities up to 5 m/s, when tested to meet the
requirements of this subclause.
4.14.2 The valve shall meet the requirements of 4.14.3 and 4.14.4 when tested before and after the
hydrostatic pressure test.
4.14.3 The valve with associated trim shall not signal an alarm when discharge takes place downstream
from the wet alarm valve at a flow rate of 15 l/min with a service pressure of 0,14 MPa (1,4 bar) when
tested in accordance with 6.10.2.2.
4.14.4 The valve with associated fittings shall signal an alarm when continuous discharge takes place
downstream from the wet alarm valve at the following flow rates when tested in accordance with 6.10.2.2.
a) 60 l/min at a service pressure of 0,14 MPa (1,4 ba
...
Questions, Comments and Discussion
Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.