ISO 6182-17:2020

INTERNATIONAL ISO
STANDARD 6182-17
First edition
2020-07
Fire protection — Automatic sprinkler
systems —
Part 17:
Requirements and test methods for
pressure reducing valves
Protection contre l'incendie — Systèmes d'extinction automatiques du
type sprinkler —
Partie 17: Exigences et méthodes d'essai pour les détendeurs
Reference number
©
ISO 2020
© ISO 2020
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ii © ISO 2020 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Requirements . 2
4.1 Nominal sizes and tolerances . 2
4.2 Connections . 2
4.3 Rated working pressure . 3
4.4 Body and cover . 3
4.5 Strength (see 6.4) . 3
4.6 Access for maintenance . 4
4.7 Components . 4
4.8 Leakage and deformation (6.3) . 5
4.9 Non-metallic components (excluding gaskets, diaphragms, seals and other
elastomeric parts) (see 6.5 and 6.6) . 5
4.10 Sealing assembly elements (see 6.7). 5
4.11 Clearances . 5
4.12 Operation (see 6.8) . 5
4.13 Static leakage (see 6.9). 6
4.14 Durability (see 6.10) . 6
5 Production testing and quality control . 6
6 Tests . 6
6.1 Samples . 6
6.2 Spring and diaphragm . 6
6.2.1 Spring. 6
6.2.2 Diaphragm . 7
6.3 Leakage and deformation (see 4.8) . 7
6.3.1 Body leakage (see 4.8.1) . 7
6.3.2 Sealing assembly (see 4.8.2) . 7
6.3.3 Stem seal and repacking leakage (see 4.8.3) . 7
6.4 Strength (see 4.5) . 7
6.4.1 Body (see 4.5.1) . 7
6.4.2 Diaphragms (see 4.5.2) . 7
6.5 Warm-water ageing test for non-metallic components (excluding gaskets, seals
and other elastomeric components) (see 4.9) . 7
6.6 Air ageing test for non-metallic components (excluding gaskets, seals and other
elastomeric components) (see 4.9) . 8
6.7 Sealing element tests (see 4.10) . 8
6.8 Operation (see 4.12) . 9
6.9 Static leakage (90 days) (see 4.13) . 9
6.10 Durability (see 4.14) .10
7 Marking .10
8 Manufacturer’s installation instructions .10
Annex A (normative) Tolerances .12
Bibliography .13
Foreword
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This document was prepared by Technical Committee ISO/TC 21, Equipment for fire protection and fire
fighting, Subcommittee SC 5, Fixed firefighting systems using water.
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iv © ISO 2020 – All rights reserved

INTERNATIONAL STANDARD ISO 6182-17:2020(E)
Fire protection — Automatic sprinkler systems —
Part 17:
Requirements and test methods for pressure reducing
valves
1 Scope
This document specifies performance requirements, methods of test and marking requirements for
pressure reducing valves intended to reduce the downstream water pressure in the piping for water-
based fire protection systems. Within the context of this document, pressure reducing valves include
both pilot operated pressure reducing valves and direct acting pressure reducing valves. Performance
and test requirements for other auxiliary components or attachments to pressure reducing valves are
not within the scope of this document.
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.
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.
ISO and IEC maintain terminological databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at http:// www .electropedia .org/
3.1
corrosion-resistant material
®1)
bronze, brass, Monel metal, austenitic stainless steel, or equivalent, or plastic material conforming
with the requirements of this document ®
1) Monel is a trademark of Special Metals Corporation and is an example of a suitable product available
commercially. This information is given for the convenience of users of this document and does not constitute an
endorsement by ISO of this product. Equivalent products may be used if they can be shown to lead to the same
results.
3.2
direct acting pressure reducing valve
pressure reducing valve utilizing a diaphragm or spring that responds directly to variations in
downstream pressure to provide the necessary flow and pressure to a system
Note 1 to entry: Direct acting valves are subject to reduced pressure falloff where a decrease in downstream
regulated pressure can occur when the flow increases.
3.3
main valve
p
...