ISO 6182-2:2025

Fire protection — Automatic sprinkler systems — Part 2: Requirements and test methods for sprinkler system alarm valves, check valves, water motor alarms, retard devices and accelerators

This document specifies performance, requirements, methods of test and marking requirements for the following equipment for use in automatic fire protection systems: — wet alarm valves; — retard devices; — water motor alarms; — dry pipe valves; — accelerators; — deluge valves; — preaction valves; — check valves. Performance and test requirements for trim valves for alarm valves are not covered by this document. The requirements for pressure reducing valves and fire pump relief valves are provided by ISO 6182-16 and ISO 6182-17.

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

General Information

• Status: Published
• Publication Date: 06-Jul-2025
• ICS: 13.220.20 - Fire protection
• Technical Committee: ISO/TC 21/SC 5 - Fixed firefighting systems using water
• Drafting Committee: ISO/TC 21/SC 5/WG 10 - Valves
• Current Stage: 6060 - International Standard published
• Start Date: 07-Jul-2025
• Due Date: 12-Mar-2025
• Completion Date: 07-Jul-2025

Relations

• Revises: ISO 6182-5:2012 - Fire protection — Automatic sprinkler systems — Part 5: Requirements and test methods for deluge valves
• Effective Date: 16-Sep-2023
• Revises: ISO 6182-8:2019 - Fire protection — Automatic sprinkler systems — Part 8: Requirements and test methods for pre-action dry alarm valves
• Effective Date: 16-Sep-2023
• Revises: ISO 6182-6:2020 - Fire protection — Automatic sprinkler systems — Part 6: Requirements and test methods for check valves
• Effective Date: 16-Sep-2023
• Revises: ISO 6182-2:2012 - Fire protection — Automatic sprinkler systems — Part 2: Requirements and test methods for wet alarm valves, retard chambers and water motor alarms
• Effective Date: 16-Sep-2023
• Revises: ISO 6182-3:2012 - Fire protection — Automatic sprinkler systems — Part 3: Requirements and test methods for dry pipe valves
• Effective Date: 16-Sep-2023
• Revises: ISO 6182-4:2019 - Fire protection — Automatic sprinkler systems — Part 4: Requirements and test methods for quick opening devices
• Effective Date: 16-Sep-2023

Standards Content (Sample)

International
Standard
ISO 6182-2
Fourth edition
Fire protection — Automatic
2025-07
sprinkler systems —
Part 2:
Requirements and test methods
for sprinkler system alarm valves,
check valves, water motor alarms,
retard devices and accelerators
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 2025
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
or ISO’s member body in the country of the requester.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland
ii
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Production testing and quality control . 6
4.1 Responsibility .6
4.2 Production body strength test .6
4.3 Production operation test .6
4.4 Production leakage test .6
5 Requirements . 6
5.1 Overview .6
5.2 Nominal size .6
5.3 Connections .6
5.4 Rated working pressure .7
5.5 Body and cover .7
5.6 Strength (see 6.2) .7
5.7 Access for maintenance .7
5.8 Components (see 6.3, 6.4 and 6.12) .7
5.9 Leakage (see 6.5) .8
5.10 Non-metallic components (excluding gaskets, seals and other elastomeric parts) (see
6.5, 6.6, 6.7 and 6.11) . .9
5.11 Sealing assembly elements (see 6.8) .9
5.12 Clearances (see 6.9) .9
5.13 Hydraulic friction loss (see 6.10) . 13
5.14 Endurance (see 6.11) . 13
5.15 Operational performance (see 6.12) . 13
5.16 Equilibrium time (see 6.15) .14
5.17 Drains (see 6.4) . 15
5.18 Alarms (see 6.11) . 15
5.19 Retard devices (6.16) . 15
5.19.1 General . 15
5.19.2 Strength . 15
5.19.3 Strainer . 15
5.19.4 Support .16
5.19.5 Retard chamber drain .16
5.19.6 Components (see 6.6, 6.7, 6.12) .16
5.20 Height limitations for wet pilot lines (see 6.12) .16
5.21 Water motor alarms (see 6.17) .17
5.22 Water motor alarm connections (see 6.17) .17
5.23 Water motor alarm nozzles and strainers .17
5.24 Water motor alarm operation (see 6.17) .17
5.25 Water motor alarm bodies and covers .17
5.26 Water motor alarm audibility (see 6.17) .18
6 Tests . 19
6.1 Samples .19
6.2 Body strength (see 5.6) . 20
6.3 Spring and diaphragm test (see 5.8.5) . 20
6.4 Anti-reseating test of dry, preaction and deluge valves (see 5.8.6) . 20
6.5 Leakage and deformation tests (see 5.9).21
6.5.1 Body leakage test .21
6.5.2 Sealing assembly test .21
6.5.3 Wet and check valve leakage .21

iii
6.6 Warm water ageing test for non-metallic components (excluding gaskets and seals and
other elastomeric parts) (see 5.10, 5.19 and 5.21) .21
6.7 Air ageing test for non-metallic components (excluding gaskets and seals and other
elastomeric parts) (see 5.9, 5.18 and 5.20) . 22
6.8 Sealing element tests for valves (see 5.11) . 22
6.9 Salt mist corrosion test (see 5.12.2 and 5.12.7) . 23
6.9.1 Reagents . 23
6.9.2 Apparatus . 23
6.9.3 Procedure . 23
6.10 Hydraulic friction loss test for valves (see 5.13) . 23
6.11 Endurance test (see 5.14, 5.18) . 23
6.12 Operational tests (see 5.15, 5.20) .24
6.12.1 General .24
6.12.2 Installation . 25
6.12.3 Dry and preaction valve differential . 25
6.12.4 Preaction valve operation . 25
6.12.5 Preaction operational test in the dry mode (sprinkler operation with detection
fault) .
...

FINAL DRAFT
International
Standard
ISO/FDIS 6182-2
ISO/TC 21/SC 5
Fire protection — Automatic
Secretariat: ANSI
sprinkler systems —
Voting begins on:
2025-04-10
Part 2:
Requirements and test methods
Voting terminates on:
2025-06-05
for sprinkler system alarm valves,
check valves, water motor alarms,
retard devices and accelerators
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
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
Reference number
ISO/FDIS 6182-2:2025(en) © ISO 2025

FINAL DRAFT
ISO/FDIS 6182-2:2025(en)
International
Standard
ISO/FDIS 6182-2
ISO/TC 21/SC 5
Fire protection — Automatic
Secretariat: ANSI
sprinkler systems —
Voting begins on:
Part 2:
Requirements and test methods
Voting terminates on:
for sprinkler system alarm valves,
check valves, water motor alarms,
retard devices and accelerators
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
RECIPIENTS OF THIS DRAFT ARE INVITED TO SUBMIT,
WITH THEIR COMMENTS, NOTIFICATION OF ANY
RELEVANT PATENT RIGHTS OF WHICH THEY ARE AWARE
AND TO PROVIDE SUPPOR TING DOCUMENTATION.
© ISO 2025
IN ADDITION TO THEIR EVALUATION AS
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
BEING ACCEPTABLE FOR INDUSTRIAL, TECHNO-
LOGICAL, COMMERCIAL AND USER PURPOSES, DRAFT
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on
INTERNATIONAL STANDARDS MAY ON OCCASION HAVE
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL
or ISO’s member body in the country of the requester.
TO BECOME STAN DARDS TO WHICH REFERENCE MAY BE
MADE IN NATIONAL REGULATIONS.
ISO copyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva
Phone: [phone]
Email: [e-mail]
Website: www.iso.org
Published in Switzerland Reference number
ISO/FDIS 6182-2:2025(en) © ISO 2025

ii
ISO/FDIS 6182-2:2025(en)
Contents Page
Foreword .v
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Production testing and quality control . 6
4.1 Responsibility .6
4.2 Production body strength test .6
4.3 Production operation test .6
4.4 Production leakage test .6
5 Requirements . 6
5.1 Overview .6
5.2 Nominal size .6
5.3 Connections .6
5.4 Rated working pressure .7
5.5 Body and cover .7
5.6 Strength (see 6.2) .7
5.7 Access for maintenance .7
5.8 Components (see 6.3, 6.4 and 6.12) .7
5.9 Leakage (see 6.5) .8
5.10 Non-metallic components (excluding gaskets, seals and other elastomeric parts) (see
6.5, 6.6, 6.7 and 6.11) . .9
5.11 Sealing assembly elements (see 6.8) .9
5.12 Clearances (see 6.9) .9
5.13 Hydraulic friction loss (see 6.10) . 13
5.14 Endurance (see 6.11) . 13
5.15 Operational performance (see 6.12) . 13
5.16 Equilibrium time (see 6.15) .14
5.17 Drains (see 6.4) . 15
5.18 Alarms (see 6.11) . 15
5.19 Retard devices (6.16) . 15
5.19.1 General . 15
5.19.2 Strength . 15
5.19.3 Strainer . 15
5.19.4 Support .16
5.19.5 Retard chamber drain .16
5.19.6 Components (see 6.6, 6.7, 6.12) .16
5.20 Height limitations for wet pilot lines (see 6.12) .16
5.21 Water motor alarms (see 6.17) .17
5.22 Water motor alarm connections (see 6.17) .17
5.23 Water motor alarm nozzles and strainers .17
5.24 Water motor alarm operation (see 6.17) .17
5.25 Water motor alarm bodies and covers .17
5.26 Water motor alarm audibility (see 6.17) .18
6 Tests . 19
6.1 Samples .19
6.2 Body strength (see 5.6) . 20
6.3 Spring and diaphragm test (see 5.8.5) . 20
6.4 Anti-reseating test of dry, preaction and deluge valves (see 5.8.6) . 20
6.5 Leakage and deformation tests (see 5.9).21
6.5.1 Body leakage test .21
6.5.2 Sealing assembly test .21
6.5.3 Wet and check valve leakage .21

iii
ISO/FDIS 6182-2:2025(en)
6.6 Warm water ageing test for non-metallic components (excluding gaskets and seals and
other elastomeric parts) (see 5.10, 5.19 and 5.21) .21
6.7 Air ageing test for non-metallic components (excluding gaskets and seals and other
elastomeric parts) (see 5.9, 5.18 and 5.20) . 22
6.8 Sealing element tests for valves (see 5.11) . 22
6.9 Salt mist corrosion test (see 5.12.2 and 5.12.7) . 23
6.9.1 Reagents . 23
6.9.2 Apparatus . 23
6.9.3 Procedure .
...

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ISO/FDIS 6182-2:2024(en)
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ISO /TC 21/SC 05 5
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Secretariat: ANSI
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Date: 2025-02-14xx .
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Fire protection — Automatic sprinkler systems — —
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Part 2: .
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Requirements and test methods for sprinkler system alarm valves,
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check valves, water motor alarms, retard devices and accelerators
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Protection contre l'incendie — Systèmes d'extinction automatiques du type sprinkler —
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Partie 2: Exigences et méthodes d'essai des soupapes d'alarme hydrauliques, des limiteurs de surpression et des
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dispositifs d'alarme à moteur hydraulique
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ISO/FDIS 6182-2:2025(en) Formatted: Font: Bold
Formatted: HeaderCentered
Formatted: Default Paragraph Font
Formatted: Default Paragraph Font
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication
Formatted: Adjust space between Latin and Asian text,
may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying,
Adjust space between Asian text and numbers, Border: Top:
or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO
(No border), Bottom: (No border), Left: (No border), Right:
at the address below or ISO'sISO’s member body in the country of the requester. (No border)
ISO Copyright Officecopyright office
CP 401 • Ch. de Blandonnet 8
CH-1214 Vernier, Geneva Formatted: zzCopyright address, Adjust space between Latin
and Asian text, Adjust space between Asian text and numbers,
Phone: + 41 22 749 01 11
Border: Top: (No border), Bottom: (No border), Left: (No
border), Right: (No border)
Email: [e-mail]
Formatted: French (France)
E-mail: [e-mail]
Website: www.iso.orgwww.iso.org
Formatted: zzCopyright address, Adjust space between Latin
and Asian text, Adjust space between Asian text and numbers,
Border: Top: (No border), Bottom: (No border), Left: (No
Published in Switzerland.
border), Right: (No border)
Formatted: FooterPageRomanNumber
ii
ISO/FDIS 6182-2:2025(en) Formatted: Font: 11 pt
Formatted: Font: Bold
Formatted: HeaderCentered, Left
Table of contents
1 Scope . 6
2 Normative references . 6
3 Definitions . 6
3.1 accelerator . 6
3.2 alarm Device . 6
3.3 anti-flooding device . 6
3.4 anti-reseat latch . 6
3.5 automatic drain . 7
3.6 auxiliary pressure . 7
3.7 check valve . 7
3.8 clapper . 7
3.9 clapper-type valve . 7
3.10 compensator . 7
3.11 corrosion-resistant material . 7
3.12 deluge system . 7
3.13 deluge valve . 7
3.14 differential . 8
3.15 differential type valve . 8
3.16 dry pipe system . 8
3.17 dry pipe valve . 8
3.18 holding chamber . 8
3.19 intermediate chamber . 8
3.20 mechanical-type valve . 8
3.21 minimum opening pressure . 8
3.22 non-interlock preaction system . 8
3.23 preaction system . 9
3.24 preaction valve . 9
3.25 rated working pressure . 9
3.26 ready (set) condition . 9
3.27 retard chamber . 9
3.28 retard device . 9
3.29 sealing assembly. 9
3.30 sealing assembly seat ring . 10
3.31 sensitivity . 10
3.32 service pressure . 10
3.33 system pressure . 10
3.34 system air pressure . 10
3.35 trim . 10
3.36 trip point . 10
3.37 water motor alarm . 10
3.38 wet alarm valve . 10
3.39 wet pilot line . 10
Formatted: Font: 10 pt
3.40 wet pipe system . 10
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4 Production testing and quality control . 11
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4.1 Responsibility . 11
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4.2 Production hydrostatic test . 11
stops: Not at 17.2 cm
4.3 Production operation test . 11
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4.4 Production leakage test . 11
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pt, Tab stops: Not at 17.2 cm
© ISO 2025 – All rights reserved
iii
ISO/FDIS 6182-2:2025(en) Formatted: Font: Bold
Formatted: HeaderCentered
5 Requirements . 11
5.1 Nominal size . 11
5.2 Connections . 11
5.3 Rated working pressure . 12
5.4 Body and cover. 12
5.5 Strength (see 6.2) . 12
5.6 Access for maintenance . 12
5.7 Components . 12
5.8 Leakage . 13
5.9 Non-metallic components (excluding gaskets, seals and other elastomeric parts) . 14
5.10 Sealing assembly elements . 14
5.11 Clearances . 14
5.12 Hydraulic friction loss . 15
5.13 Endurance . 16
5.14 Operational performance . 16
5.15 Equilibrium time . 17
5.16 Drains . 17
5.17 Alarms . 18
5.18 Retard devices . 18
5.19 Height limitations for wet pilot lines . 19
5.20 Water motor alarms . 19
6 Tests . 21
6.1 Samples .
...