Gas cylinders - Cylinder valves - Specification and type testing (ISO 10297:2014, Corrected version 2014-11-01)

ISO 10297:2014 specifies design, type testing and marking requirements for:
a)    cylinder valves intended to be fitted to refillable transportable gas cylinders;
b)    main valves (excluding ball valves) for cylinder bundles;
c)    cylinder valves or main valves with integrated pressure regulator (VIPR);
which convey compressed, liquefied or dissolved gases.
ISO 10297:2014 covers the function of a valve as a closure. It does not apply to valves for cryogenic equipment, portable fire extinguishers and liquefied petroleum gas (LPG) and quick-release valves (e.g. for fire-extinguishing, explosion protection and rescue applications), non-return valves or ball valves.

Gasflaschen - Flaschenventile - Spezifikation und Baumusterprüfungen (ISO 10297:2014)

Diese Internationale Norm legt Anforderungen an die Auslegung, Baumusterprüfung und Kennzeichnung für
a) Flaschenventile zur Anbringung an wiederbefüllbare ortsbewegliche Gasflaschen;
b) Hauptabsperrventile (ausgenommen Kugelhähne) für Flaschenbündel;
c) Flaschen- oder Hauptabsperrventile mit integriertem Druckregler (VIPR, en: valves with integrated pressure regulator);
fest, welche verdichtete, verflüssigte oder gelöste Gase beinhalten.
ANMERKUNG 1 Sofern keine Gefahr der Mehrdeutigkeit besteht, werden Flaschenventile, Hauptabsperrventile und VIPR in dieser Internationalen Norm zusammengefasst mit dem Begriff „Ventile“ bezeichnet.
Diese Internationale Norm behandelt die Funktion eines Ventils als Verschluss.
Diese Internationale Norm gilt nicht für
 Ventile für Kryo-Anlagen, tragbare Feuerlöscher und für Flüssiggas (LPG), und
 Schnellöffnungsventile (z. B. für Lösch-, Explosionsschutz- und Rettungsanwendungen), Rückschlag-ventile oder Kugelhähne.
ANMERKUNG 2 Anforderungen für Ventile für Kryo-Behälter sind in ISO 21011 und auf regionaler Ebene z. B. in EN 1626 festgelegt. Anforderungen für Flüssiggasventile sind in ISO 14245 oder ISO 15995 festgelegt. Anforderungen für Schnellöffnungsventile sind z. B. in ISO 17871 festgelegt. Anforderungen für Ventile für tragbare Feuerlöscher sind auf regionaler Ebene z. B. in der Reihe EN 3 festgelegt. Anforderungen für Rückschlagventile und Kugelhähne könnten in Internationalen/regionalen Normen festgelegt sein.
ANMERKUNG 3 Anforderungen für Herstellungsprüfungen und -überprüfungen von Ventilen nach dieser Internationalen Norm sind in ISO 14246 enthalten.
ANMERKUNG 4 Zusätzliche Anforderungen für VIPR sind in ISO 22435 für industrielle Anwendungen oder in ISO 10524-3 für medizinische Anwendungen festgelegt. Zusätzliche Anforderungen für Restdruckventile mit oder ohne Rückschlagfunktion sind in ISO 15996 festgelegt. Zusätzliche Anforderungen für Druckentlastungseinrichtungen könnten in internationalen/regionalen Rechtsvorschriften/Normen festgelegt sein.
ANMERKUNG 5 Zusätzliche Anforderungen für Flaschenventile für Atemschutzgeräte sind auf regionaler Ebene z. B. in der Reihe EN 144 festgelegt. Zusätzliche Anforderungen für Schnellöffnungs-Flaschenventile für stationäre Feuerlösch-anlagen sind in ISO 16003 und auf regionaler Ebene z. B. in EN 12094-4 festgelegt.

Bouteilles à gaz - Robinets de bouteilles - Spécifications et essais de type (ISO 10297:2014, Version corrigée 2014-11-01)

L'ISO 10297:2014 spécifie la conception, les méthodes d'essai de type et les exigences de marquage pour:
a)    les robinets de bouteilles destinés à être montés sur des bouteilles à gaz transportables rechargeables;
b)    les vannes de cadre (à l'exception des robinets à boisseau sphérique) pour cadres de bouteilles;
c)    les robinets de bouteilles ou vannes de cadre à régulateur intégré (VIPR);
qui acheminent des gaz comprimés, liquéfiés ou dissous.
L'ISO 10297:2014 couvre la fonction d'un robinet en tant que dispositif de fermeture. Elle ne s'applique pas aux robinets pour équipement cryogénique, extincteurs portables et gaz de pétrole liquéfié (GPL) et aux robinets à ouverture rapide (par exemple, pour extinction d'incendie, protection contre l'explosion et opérations de sauvetage), aux clapets anti-retour ou aux robinets à boisseau sphérique.

Plinske jeklenke - Ventili za jeklenke - Specifikacija in preskus tipa (ISO 10297:2014)

Standard EN ISO 10297 določa načrtovanje, preskus tipa in zahteve za označevanje za: a) ventile za jeklenke, ki so namenjeni vgradnji v ponovno polnljive premične plinske jeklenke; b) glavne ventile (brez krogelnih ventilov) za snope jeklenk; c) ventile za jeklenke ali glavne ventile z vgrajenim regulatorjem tlaka (VIPR); ki prenašajo stisnjene, utekočinjene ali raztopljene pline. OPOMBA 1 Če ne obstaja tveganje dvoumnosti, so ventili za jeklenke, glavni ventili in VIPR v tem standardu imenovani s skupnim izrazom »ventili«. Ta mednarodni standard obravnava funkcijo ventila kot zaporo. Ta mednarodni standard ne velja za – ventile za kriogeno opremo, premične gasilnike in utekočinjen naftni plin (LPG), in – ventile s hitrim izpustom (npr. za gašenje požara, zaščito pred eksplozijami in reševanje), nepovratne ventile ali krogelne ventile.

General Information

Status
Published
Publication Date
15-Jul-2014
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Due Date
21-Jan-2014

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Standards Content (sample)

SLOVENSKI STANDARD
SIST EN ISO 10297:2014
01-oktober-2014
1DGRPHãþD
SIST EN ISO 10297:2006
Plinske jeklenke - Ventili za jeklenke - Specifikacija in preskus tipa (ISO
10297:2014)

Gas cylinders - Cylinder valves - Specification and type testing (ISO 10297:2014)

Gasflaschen - Flaschenventile - Spezifikation und Baumusterprüfungen (ISO
10297:2014)

Bouteilles à gaz - Robinets de bouteilles - Spécifications et essais de type (ISO

10297:2014)
Ta slovenski standard je istoveten z: EN ISO 10297:2014
ICS:
23.020.30 7ODþQHSRVRGHSOLQVNH Pressure vessels, gas
MHNOHQNH cylinders
23.060.40 7ODþQLUHJXODWRUML Pressure regulators
SIST EN ISO 10297:2014 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN ISO 10297:2014
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SIST EN ISO 10297:2014
EUROPEAN STANDARD
EN ISO 10297
NORME EUROPÉENNE
EUROPÄISCHE NORM
July 2014
ICS 23.060.40; 23.020.30 Supersedes EN ISO 10297:2006
English Version
Gas cylinders - Cylinder valves - Specification and type testing
(ISO 10297:2014)

Bouteilles à gaz - Robinets de bouteilles - Spécifications et Gasflaschen - Flaschenventile - Spezifikation und

essais de type (ISO 10297:2014) Baumusterprüfungen (ISO 10297:2014)
This European Standard was approved by CEN on 28 June 2014.

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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,

Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United

Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels

© 2014 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 10297:2014 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN ISO 10297:2014
EN ISO 10297:2014 (E)
Contents Page

Foreword ..............................................................................................................................................................3

---------------------- Page: 4 ----------------------
SIST EN ISO 10297:2014
EN ISO 10297:2014 (E)
Foreword

This document (EN ISO 10297:2014) has been prepared by Technical Committee ISO/TC 58 “Gas cylinders”

in collaboration with Technical Committee CEN/TC 23 “Transportable gas cylinders” 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 January 2015, and conflicting national standards shall be withdrawn at

the latest by January 2015.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent

rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.

This document supersedes EN ISO 10297:2006.

According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following

countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech

Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,

Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,

Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.

Endorsement notice

The text of ISO 10297:2014 has been approved by CEN as EN ISO 10297:2014 without any modification.

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SIST EN ISO 10297:2014
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SIST EN ISO 10297:2014
INTERNATIONAL ISO
STANDARD 10297
Third edition
2014-07-15
Gas cylinders — Cylinder valves —
Specification and type testing
Bouteilles à gaz — Robinets de bouteilles — Spécifications et essais de
type
Reference number
ISO 10297:2014(E)
ISO 2014
---------------------- Page: 7 ----------------------
SIST EN ISO 10297:2014
ISO 10297:2014(E)
COPYRIGHT PROTECTED DOCUMENT
© ISO 2014

All rights reserved. Unless otherwise specified, 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
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 2014 – All rights reserved
---------------------- Page: 8 ----------------------
SIST EN ISO 10297:2014
ISO 10297:2014(E)
Contents Page

Foreword ........................................................................................................................................................................................................................................iv

Introduction ..............................................................................................................................................................................................................................vii

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms, definitions and symbols ............................................................................................................................................................ 2

4 Valve description .................................................................................................................................................................................................. 6

5 Valve design requirements .....................................................................................................................................................................11

5.1 General ........................................................................................................................................................................................................11

5.2 Materials ....................................................................................................................................................................................................12

5.3 Dimensions ..............................................................................................................................................................................................12

5.4 Valve connections ..............................................................................................................................................................................13

5.5 Mechanical strength ........................................................................................................................................................................14

5.6 Valve operating mechanism ......................................................................................................................................................14

5.7 Valve operating device ...................................................................................................................................................................17

5.8 Leakage .......................................................................................................................................................................................................17

5.9 Resistance to ignition .....................................................................................................................................................................17

6 Type testing.............................................................................................................................................................................................................18

6.1 General ........................................................................................................................................................................................................18

6.2 Documentation ....................................................................................................................................................................................20

6.3 Test samples ...........................................................................................................................................................................................20

6.4 Test report ................................................................................................................................................................................................20

6.5 Test temperatures .............................................................................................................................................................................21

6.6 Test pressures .......................................................................................................................................................................................21

6.7 Test gases ..................................................................................................................................................................................................21

6.8 Test schedule .........................................................................................................................................................................................22

6.9 Hydraulic burst pressure test ..................................................................................................................................................24

6.10 Flame impingement test ..............................................................................................................................................................25

6.11 Excessive torque tests ....................................................................................................................................................................25

6.12 Leak tightness tests ..........................................................................................................................................................................25

6.13 Endurance test .....................................................................................................................................................................................27

6.14 Visual examination ...........................................................................................................................................................................28

7 Marking .......................................................................................................................................................................................................................28

Annex A (normative) Impact test ..........................................................................................................................................................................30

Annex B (normative) Tests for acetylene valves ....................................................................................................................................32

Annex C (normative) Oxygen pressure surge test ...............................................................................................................................33

Annex D (informative) Example of test schedule ..................................................................................................................................37

Annex E (informative) Example of a vacuum test

.................................................................................................................................38

Annex F (normative) Endurance test machine ........................................................................................................................................39

Bibliography .............................................................................................................................................................................................................................41

© ISO 2014 – All rights reserved iii
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SIST EN ISO 10297:2014
ISO 10297:2014(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.

The procedures used to develop this document and those intended for its further maintenance are

described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the

different types of ISO documents should be noted. This document was drafted in accordance with the

editorial rules of the ISO/IEC Directives, Part 2. www.iso.org/directives

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. Details of any

patent rights identified during the development of the document will be in the Introduction and/or on

the ISO list of patent declarations received. www.iso.org/patents

Any trade name used in this document is information given for the convenience of users and does not

constitute an endorsement.

For an explanation on the meaning of ISO specific terms and expressions related to conformity

assessment, as well as information about ISO’s adherence to the WTO principles in the Technical Barriers

to Trade (TBT), see the following URL: Foreword - Supplementary information

The committee responsible for this document is ISO/TC 58, Gas cylinders, Subcommittee SC 2, Cylinder

fittings.

This third edition cancels and replaces the second edition (ISO 10297:2006), which has been technically

revised.
The main technical modifications are:

a) Scope: inclusion of main valves and valves with integrated pressure regulator (VIPR), exclusion of

quick-release valves, non-return valves and ball valves;

b) Terms, definitions and symbols: introduction of new definitions and adaptation of existing

definitions;
c) Valve description: new clause with figures and general description;
d) Valve design requirements:

1) General: inclusion of additional requirement of internal leak tightness at −40 °C during transport

and storage;

2) Materials: deletion of requirements already given in ISO 11114-1 and ISO 11114-2; deletion of

ageing sensitivity test for non-metallic materials; addition of requirement on ductility of valve

body material; addition of requirement on suitability of lubricants for valve test pressure;

3) Dimensions: deletion of requirement on bore of the valve with regard to flow requirement and

adaption of requirements for valves fitted with a valve protection cap according to ISO 11117;

4) Valve connections: addition of requirements for separate valve filling connection;

5) Resistance to mechanical impact: addition of requirement for impact testing valves protected

by a valve guard but fixed only to the valve, modification of acceptance criteria;

iv © ISO 2014 – All rights reserved
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SIST EN ISO 10297:2014
ISO 10297:2014(E)

6) Valve operating mechanism: inclusion of allowance to increase the endurance torque for some

valve designs and to adjust compressed packed valves during endurance testing; replacement of

acetylene flashback test by alternative tests without using acetylene and addition of acetylene

decomposition test for main valves; modification of acceptance criteria;

7) Valve operating device: addition of requirement on the handwheel diameter required to achieve

the minimum closing torque; modification of acceptance criteria for flame impingement test;

8) Resistance to ignition: addition of requirement of oxygen pressure surge testing for certain

cylinder valves for gas mixtures containing oxygen and other oxidizing gases and of detailed

information on acceptance criteria; addition of mandatory reference to oxygen pressure surge

test for VIPR specified in ISO 22435 or ISO 10524-3 and for cylinder valves with residual

pressure devices specified in ISO 15996;

e) Production requirements: deletion of all respective requirements but reference to ISO 14246 in

scope;
f) Type testing:

1) General: addition of requirements for repeating tests depending on applied changes for a valve

design;
2) Documentation: addition of detailed information on documentation required;

3) Test samples: addition of requirement to have pressure gauges/indicators fitted;

4) Test report: addition of detailed information required;

5) Test pressures: adaption of information on burst test pressure (former hydraulic test pressure);

6) Test gas: addition of requirement for using helium or hydrogen or an inert mixture of these

gases for the leak tightness tests for cylinder valves for helium and hydrogen and their mixtures;

extension of requirements on gas quality;

7) Test schedule: deletion of ageing as preconditioning and leak tightness test before ageing;

addition of internal leak tightness test at −40 °C after endurance test; adaption of oxygen

pressure surge test for cylinder valves with lubricants not rated for valve test pressure; listing

of impact test;

8) Hydraulic burst pressure test: addition of testing the valve in closed position;

9) Excessive torque tests: addition of requirement to carry out the test with the valve operating

device in place; differentiation between handwheel and key/toggle operated valves; extension

of tests with requirement of two additional test samples;

10) Leak tightness tests: reference to informative Annex E for an example of a vacuum test;

unification of the lower test pressure of 0,5 bar for all gases; implementation of internal leak

tightness test at −40 °C; addition of information on required position of the valve operating

mechanism for external leak tightness test; adaption of requirement for test order for all

required test pressures; adaption of requirement for changing and maintaining the different

test temperatures; adaption of requirement for minimum closing torque;

11) Endurance test: addition of requirement to carry out the test with the handwheel in place and

of description of procedure for increasing the endurance torque for some valve designs;

12) Visual examination: addition of separate sub-clause for visual examination with detailed

information on acceptance criteria;

13) Oxygen pressure surge test: information on test installation and test procedure transferred to

normative Annex C; addition of detailed information on determination of pressure rise time;

addition of divergent installation requirements for testing main valves; addition of detailed

information on acceptance criteria;
© ISO 2014 – All rights reserved v
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SIST EN ISO 10297:2014
ISO 10297:2014(E)
14) Acetylene test: information transferred to normative Annex B;

15) Impact test: addition of information on the valving torque according to ISO 13341 to be

used; addition of subsequent hydraulic burst pressure test and internal leak tightness test;

modification of test procedure;

16) Marking: addition of requirement for marking cylinder valves oxygen pressure surge tested via

different connections and of detailed information on marking of valve inlet, valve outlet and

separate valve filling connections;

17) Example of test sequence: information transferred from informative Annex B to informative

Annex D and adaptation according to new requirements for valve designs and changes and

material specifications within a valve design;
18) Addition of informative Annex E, giving an example of a vacuum test;

19) Endurance test equipment and procedure: information transferred from normative Annex C to

normative Annex F.
g) full editorial rework.
vi © ISO 2014 – All rights reserved
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SIST EN ISO 10297:2014
ISO 10297:2014(E)
Introduction

This International Standard covers the function of a cylinder valve as a closure (defined by the UN Model

Regulations). Additional features of cylinder valves (e.g. pressure regulators, residual pressure devices,

non-return devices and pressure relief devices) might be covered by other standards and/or regulations.

Cylinder valves complying with this International Standard can be expected to perform satisfactorily

under normal service conditions.
This International Standard pays particular attention to:
a) suitability of materials;

b) safety (mechanical strength, impact strength, endurance, leak tightness, resistance to ignition,

resistance to acetylene flashback);
c) testing;
d) marking.

This standard has been written to be in conformity with the UN Model Regulations. When published

it will be submitted to the UN Sub Committee of Experts on the Transport of Dangerous Goods with a

request that it be included in the UN Model Regulations.

Where there is any conflict between this International Standard and any applicable regulation, the

regulation always takes precedence.

Considering the changes described in the Foreword, when a cylinder valve has been approved according

to the previous version of this International Standard the body responsible for approving the same

cylinder valve to this new edition should consider which tests need to be performed.

In this International Standard the unit bar is used, due to its universal use in the field of technical gases.

It should, however, be noted that bar is not an SI unit, and that the corresponding SI unit for pressure is

5 5 2
Pa (1 bar = 10 Pa = 10 N/m ).

Pressure values given in this International Standard are given as gauge pressure (pressure exceeding

atmospheric pressure) unless noted otherwise.
© ISO 2014 – All rights reserved vii
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SIST EN ISO 10297:2014
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SIST EN ISO 10297:2014
INTERNATIONAL STANDARD ISO 10297:2014(E)
Gas cylinders — Cylinder valves — Specification and type
testing
1 Scope

This International Standard specifies design, type testing and marking requirements for:

a) cylinder valves intended to be fitted to refillable transportable gas cylinders;

b) main valves (excluding ball valves) for cylinder bundles;
c) cylinder valves or main valves with integrated pressure regulator (VIPR);
which convey compressed, liquefied or dissolved gases.

NOTE 1 Where there is no risk of ambiguity, cylinder valves, main valves and VIPR are addressed with the

collective term “valves” within this International Standard.
This International Standard covers the function of a valve as a closure.
This International Standard does not apply to

— valves for cryogenic equipment, portable fire extinguishers and liquefied petroleum gas (LPG), and

— quick-release valves (e.g. for fire-extinguishing, explosion protection and rescue applications), non-

return valves or ball valves.

NOTE 2 Requirements for valves for cryogenic vessels are specified in ISO 21011 and at a regional level e.g. in

EN 1626. Requirements for LPG valves are specified in ISO 14245 or ISO 15995. Requirements for quick-release

valves are specified e.g. in ISO 17871. Requirements for valves for portable fire extinguishers at a regional

level are specified e.g. in EN 3 series. Requirements for non-return valves and ball valves might be specified in

international/regional standards.

NOTE 3 Requirements for manufacturing tests and examinations of valves covered by this International

Standard are given in ISO 14246.

NOTE 4 Additional requirements for VIPR are specified in ISO 22435 for industrial applications or ISO 10524-3

for medical applications. Additional requirements for residual pressure valves with or without a non-return

function are specified in ISO 15996. Additional requirements for pressure-relief devices might be specified in

international/regional regulations/standards.

NOTE 5 Additional specific requirements for valves for breathing apparatus at a regional level are specified

e.g. in EN 144 series. Additional specific requirements for quick-release valves for fixed fire-fighting systems are

specified in ISO 16003 and at a regional level e.g. in EN 12094–4.
2 Normative references

The following referenced documents, in whole or in part, are normatively referenced in this document

and are indispensable for its application. For dated references, only the edition cited applies. For undated

references, the latest edition of the referenced document (including any amendments) applies.

ISO 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method

ISO 407, Small medical gas cylinders — Pin-index yoke-type valve connections
ISO 10286, Gas cylinders — Terminology
© ISO 2014 – All rights reserved 1
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SIST EN ISO 10297:2014
ISO 10297:2014(E)

ISO 10524-3, Pressure regulators for use with medical gases — Part 3: Pressure regulators integrated with

cylinder valves

ISO 11114-1, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 1:

Metallic materials

ISO 11114-2, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2:

Non-metallic materials

ISO 11117:2008, Gas cylinders — Valve protection caps and valve guards — Design, construction and tests

ISO 13341, Gas cylinders — Fitting of valves to gas cylinders

ISO 15615:2013, Gas welding equipment — Acetylene manifold systems for welding, cutting and allied

processes — Safety requirements in high-pressure devices

ISO 15996, Gas cylinders — Residual pressure valves — General requirements and type testing

ISO 22435, Gas cylinders — Cylinder valves with integrated pressure regulators — Specification and type

testing
3 Terms, definitions and symbols

For the purposes of this document, the terms and definitions given in ISO 10286, and the following apply.

3.1
valve operating mechanism

mechanism which closes and opens the valve orifice and which includes the internal and external sealing

systems

Note 1 to entry: In ISO 22435 the valve operating mechanism is called shut-off mechanism.

Note 2 to entry: For some VIPR designs the pressure regulating valve can act as the shut-off mechanism.

EXAMPLE A threaded valve spindle which, when rotated, raises and lowers a seal/seat.

3.2
valve design
classification of valves with regard to the valve operating mechanism (3.1)
3.3
valve operating device
component which actuates the valve operating mechanism (3.1)
EXAMPLE Handwheel, key, knob, toggle, lever or actuator.
3.4
external leak tightness

leak tightness to atmosphere (leakage in and/or leakage out) when the valve is open

Note 1 to entry: See Figure 1.
2 © ISO 2014 – All rights reserved
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SIST EN ISO 10297:2014
ISO 10297:2014(E)
p < p p > p
a a
Key
1 valve outlet connection (sealed)
Leakage in (vacuum test)
Leakage out
p internal pressure
p atmospheric pressure
Figure 1 — External leak tightness
3.5
internal leak tightness

leak tightness across the valve seat (leakage in and/or leakage out) when the valve is closed

Note 1 to entry: See Figure 2.
© ISO 2014 – All rights reserved 3
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SIST EN ISO 10297:2014
ISO 10297:2014(E)
p < p p > p
a a
Key
1 valve outlet connection (open)
Leakage in (vacuum test).
Leakage out.
p internal pressure
p atmospheric pressure
Figure 2 — Internal leak tightness
3.6
valve working pressure

settled pressure of a compressed gas at a uniform reference temperature of 15 °C in a full gas cylinde

...

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