oSIST prEN ISO 10297:2023
(Main)Gas cylinders - Cylinder valves - Specification and type testing (ISO/DIS 10297:2023)
Gas cylinders - Cylinder valves - Specification and type testing (ISO/DIS 10297:2023)
Gasflaschen - Flaschenventile - Spezifikation und Baumusterprüfungen (ISO/DIS 10297:2023)
Bouteilles à gaz - Robinets de bouteilles - Spécifications et essais de type (ISO/DIS 10297:2023)
Plinske jeklenke - Ventili za jeklenke - Specifikacija in preskus tipa (ISO/DIS 10297:2023)
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN ISO 10297:2023
01-april-2023
Plinske jeklenke - Ventili za jeklenke - Specifikacija in preskus tipa (ISO/DIS
10297:2023)
Gas cylinders - Cylinder valves - Specification and type testing (ISO/DIS 10297:2023)
Gasflaschen - Flaschenventile - Spezifikation und Baumusterprüfungen (ISO/DIS
10297:2023)
Bouteilles à gaz - Robinets de bouteilles - Spécifications et essais de type (ISO/DIS
10297:2023)
Ta slovenski standard je istoveten z: prEN ISO 10297
ICS:
23.020.35 Plinske jeklenke Gas cylinders
23.060.40 Tlačni regulatorji Pressure regulators
oSIST prEN ISO 10297:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN ISO 10297:2023
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oSIST prEN ISO 10297:2023
DRAFT INTERNATIONAL STANDARD
ISO/DIS 10297
ISO/TC 58/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2023-02-28 2023-05-23
Gas cylinders — Cylinder valves — Specification and type
testing
ICS: 23.020.35; 23.060.40
This document is circulated as received from the committee secretariat.
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
NOT BE REFERRED TO AS AN INTERNATIONAL
STANDARD UNTIL PUBLISHED AS SUCH.
IN ADDITION TO THEIR EVALUATION AS
BEING ACCEPTABLE FOR INDUSTRIAL,
TECHNOLOGICAL, COMMERCIAL AND
USER PURPOSES, DRAFT INTERNATIONAL
STANDARDS MAY ON OCCASION HAVE TO
BE CONSIDERED IN THE LIGHT OF THEIR
POTENTIAL TO BECOME STANDARDS TO
WHICH REFERENCE MAY BE MADE IN
Reference number
NATIONAL REGULATIONS.
ISO/DIS 10297:2023(E)
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 SUPPORTING DOCUMENTATION. © ISO 2023
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
DRAFT INTERNATIONAL STANDARD
ISO/DIS 10297
ISO/TC 58/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:
Gas cylinders — Cylinder valves — Specification and type
testing
ICS: 23.020.35; 23.060.40
This document is circulated as received from the committee secretariat.
COPYRIGHT PROTECTED DOCUMENT
THIS DOCUMENT IS A DRAFT CIRCULATED
FOR COMMENT AND APPROVAL. IT IS
© ISO 2023
ISO/CEN PARALLEL PROCESSING
THEREFORE SUBJECT TO CHANGE AND MAY
All rights reserved. Unless otherwise specified, or required in the context of its implementation, no part of this publication may
NOT BE REFERRED TO AS AN INTERNATIONAL
be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on STANDARD UNTIL PUBLISHED AS SUCH.
the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below
IN ADDITION TO THEIR EVALUATION AS
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WHICH REFERENCE MAY BE MADE IN
Reference number
Email: copyright@iso.org
NATIONAL REGULATIONS.
Website: www.iso.org ISO/DIS 10297:2023(E)
RECIPIENTS OF THIS DRAFT ARE INVITED
Published in Switzerland
TO SUBMIT, WITH THEIR COMMENTS,
NOTIFICATION OF ANY RELEVANT PATENT
RIGHTS OF WHICH THEY ARE AWARE AND TO
ii
© ISO 2023 – All rights reserved
PROVIDE SUPPORTING DOCUMENTATION. © ISO 2023
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
Contents Page
Foreword .v
Introduction .vii
1 Scope . 1
2 Normative references . 2
3 Terms and definitions . 2
4 Valve description . 9
5 Valve design requirements .16
5.1 General . 16
5.2 Materials . 16
5.3 Valve connections . 17
5.4 Mechanical strength . 18
5.4.1 Resistance to hydraulic pressure . 18
5.4.2 Resistance to mechanical impact . 18
5.4.3 Resistance to valve stem impact . 19
5.5 Valve operating mechanism. 19
5.5.1 Opening and closing of the valve. 19
5.5.2 Endurance . 19
5.5.3 Resistance to overtorquing . . 20
5.5.4 Acetylene specific requirements . 22
5.6 Valve operating device.22
5.6.1 Closing direction .22
5.6.2 Handwheel diameter . 23
5.6.3 Exposure to flame . 23
5.7 Leakage . 23
5.8 Resistance to ignition . 24
5.9 Flow capacity . 24
6 Type testing .25
6.1 General . 25
6.2 Test schedule . 25
6.3 Documentation .28
6.4 Test samples .28
6.5 Test report .29
6.6 Test temperatures .29
6.7 Test pressures . 29
6.7.1 Valve hydraulic test pressure.29
6.7.2 Valve test pressure .29
6.8 Test gases. 30
6.8.1 Gas quality . 30
6.8.2 Leak tightness tests . 31
6.8.3 Endurance tests . . 31
6.8.4 Acetylene decomposition test . 31
6.8.5 Oxygen pressure surge test . 31
6.9 Hydraulic pressure test . 31
6.10 Flame impingement test . 32
6.11 Excessive torque tests . 32
6.11.1 Handwheel operated valves . 32
6.11.2 Key and toggle operated valves . 32
6.11.3 VIPR type B and VIPR type C with the flow selector acting as the primary
valve operating mechanism . 32
6.12 Leak tightness tests .33
6.12.1 General . 33
6.12.2 Internal leak tightness test . 33
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
6.12.3 External leak tightness test .34
6.13 Endurance test . 35
6.14 Endurance test of VIPR types B and C . 36
6.15 Endurance test of the filling connection non-return valve . 37
6.16 Visual examination .38
7 Marking . .38
Annex A (normative) Impact test.40
Annex B (normative) Tests for acetylene valves .42
Annex C (normative) Oxygen pressure surge test . 44
Annex D (informative) Example of a vacuum test .49
Annex E (normative) Endurance test machine .50
Annex F (normative) Required tests for validation of changes and/or material variants
within a valve design .52
Bibliography .56
iv
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(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 (see 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 (see 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 of the voluntary nature of standards, the meaning of ISO specific terms and
expressions related to conformity assessment, as well as information about ISO's adherence to
the World Trade Organization (WTO) principles in the Technical Barriers to Trade (TBT), see
www.iso.org/iso/foreword.html.
This document was prepared by Technical Committee ISO/TC 58, Gas cylinders, Subcommittee SC 2,
Cylinder fittings.
This fourth edition cancels and replaces the third edition (ISO 10297:2014+Amd1:2017), which has
been technically revised.
The main changes are as follows:
— clarification of the scope concerning different VIPR designs,
— addition of several new terms and definitions, e.g. VIPR types A, B and C for easy referencing of
different design types,
— oxygen pressure surge test:
— for VIPR transferred from ISO 22435 and amended,
— for RPV transferred from ISO 15996 and amended,
— reference for test equipment and procedure to ISO 11114-6,
— endurance test for specific VIPR designs transferred from ISO 22435 and amended,
— endurance test of the non-return valve transferred from ISO 22435 and amended,
— acetylene decomposition test of VIPR designs transferred from ISO 22435 and amended,
— clause 5.3 "Dimensions" removed,
— introduction of Table 2 for giving the different leakage rates depending on the valve design,
— Table 4 (former Table 3) amended,
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
— introduction of recommendations for flow capacity values and reference to CGA V-9 for the respective
determination as an example,
— introduction of a valve stem impact test for pin-index valves not permanently protected during
transport and use and reference to CGA V-9 for the respective test,
— introduction of hydraulic pressure test also in closed position for manually operated valves,
— Annex D "example of test schedule" removed,
— information on changes and/or material variants within a valve design moved to new Annex F and
amended.
Any feedback or questions on this document should be directed to the user’s national standards body. A
complete listing of these bodies can be found at www.iso.org/members.html.
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
Introduction
This document covers the function of a cylinder valve as a closure (defined by the UN Model Regulations).
It is possible that additional features of cylinder valves (e.g. pressure regulating functions, residual
pressure devices, non-return devices and pressure relief devices) are covered by other standards or
regulations.
Cylinder valves conforming to this document can be expected to perform satisfactorily under normal
service conditions.
This document pays particular attention to:
a) safety (mechanical strength, impact strength, endurance, leak tightness, resistance to ignition,
resistance to acetylene decomposition);
b) suitability of materials;
c) testing;
d) marking.
This document has been written so that it is suitable to be referenced in the UN Model Regulations.
In this document, 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 Pa
5 5 2
(1 bar = 10 Pa = 10 N/m ).
Pressure values given in this document are given as gauge pressure (pressure exceeding atmospheric
pressure) unless noted otherwise.
Any tolerances given in this document include measurement uncertainties.
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oSIST prEN ISO 10297:2023
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oSIST prEN ISO 10297:2023
DRAFT INTERNATIONAL STANDARD ISO/DIS 10297:2023(E)
Gas cylinders — Cylinder valves — Specification and type
testing
1 Scope
This document 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 bundles of cylinders;
c) cylinder valves or main valves with integrated pressure regulator (VIPR);
NOTE 1 This includes the following specific VIPR designs where:
1) the pressure regulating system of a VIPR is acting as the primary valve operating mechanism
(VIPR type B). This also includes designs where closure of the primary valve operating
mechanism of a VIPR is obtained by closing the seat of the pressure regulating mechanism.;
2) the primary valve operating mechanism of a VIPR is located at the low pressure side of the
pressure regulating system (VIPR type C).
d) valves for pressure drums and tubes;
which convey compressed, liquefied or dissolved gases.
NOTE 2 Where there is no risk of ambiguity, cylinder valves, main valves, VIPR and valves for pressure drums
and tubes are addressed with the collective term “valves” within this document.
NOTE 3 The term “pressure receptacle” is used within this document to cover instances where no
differentiation is necessary between gas cylinders, bundles of cylinders, pressure drums and tubes.
This document does not apply to
— valves for cryogenic equipment, portable fire extinguishers and liquefied petroleum gas (LPG);
— quick-release cylinder valves (e.g. for fire-extinguishing, explosion protection and rescue
applications) - requirements for quick-release cylinder valves are specified in ISO 17871 which
nevertheless contains normative references to this document;
— self-closing cylinder valves or ball valves.
NOTE 4 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 self-closing
cylinder valves are specified in ISO 17879. Requirements for ball valves are specified in ISO 23826. Requirements
for valves for portable fire extinguishers at a regional level are specified e.g. in EN 3 series.
This document only covers the function of a valve as a closure. Other functions that are possibly
integrated in the valve can be covered by other standards. Such standards do however not constitute
requirements according to this document.
NOTE 5 Definition and specific requirements for VIPR in addition to those that are given in this document
are specified in ISO 22435 for industrial applications or ISO 10524-3 for medical applications. Similarly, certain
specific requirements for residual pressure valves (RPV) with or without a non-return function in addition to
those that are given in this document are given in ISO 15996.
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
NOTE 6 Certain specific requirements for valves for breathing apparatus in addition to those that are given
in this document are specified at a regional level, e.g. in EN 144 series. Certain specific requirements for quick-
release valves for fixed fire-fighting systems in addition to those that are given in this document are specified in
ISO 16003 and at a regional level e.g. in EN 12094–4.
NOTE 7 Additional requirements for pressure-relief devices can exist in international/regional regulations/
standards.
NOTE 8 Requirements for manufacturing tests and examinations of valves covered by this document are
given in ISO 14246.
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 148-1, Metallic materials — Charpy pendulum impact test — Part 1: Test method
ISO 10286, Gas cylinders — Vocabulary
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 11114-6, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 6:
Oxygen pressure surge testing
ISO 11117, Gas cylinders — Valve protection caps and guards — Design, construction and tests
ISO 13341, Gas cylinders — Fitting of valves to gas cylinders
ISO/DIS 15615:2020, Gas welding equipment — Acetylene manifold systems for welding, cutting and allied
processes — Safety requirements in high-pressure devices
3 Terms and definitions
For the purposes of this document, the terms and definitions given in ISO 10286 and the following apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https:// www .iso .org/ obp
— IEC Electropedia: available at https:// www .electropedia .org/
3.1
valve design
classification of valves with regard to the valve operating mechanism (3.10)
3.2
main valve
valve which is fitted to the manifold of a bundle of cylinders, battery vehicle, battery wagon or MEGC
isolating it from the main connection(s)
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
3.3
residual pressure valve
RPV
valve which incorporates a residual pressure device (3.4)
Note 1 to entry: The term “valve” covers the valves listed in Clause 1, a) to d).
3.4
residual pressure device
RPD
device that is designed to prevent ingress of contaminants by maintaining a positive pressure within
the pressure receptacle relative to atmosphere by closing off its internal gas passages in the discharging
direction
Note 1 to entry: This definition can be different to definitions given in applicable transport regulations.
3.5
valve with integrated pressure regulator
VIPR
device intended to be permanently fitted to a pressure receptacle which comprises of at least a shut-off
function and pressure regulating system
Note 1 to entry: VIPR used as a main valve (3.2) are covered by this definition.
3.6
VIPR type A
VIPR design where the primary valve operating mechanism (3.10) is located upstream of the pressure
regulating system (3.9)
Note 1 to entry: For typical designs see Figure 1. The filling connection can also be located between the primary
valve operating mechanism and the pressure regulating system.
a) Filling connection upstream of the primary b) Filling connection between the primary
valve operating mechanism valve operating mechanism and the pressure
regulating system
Key
1 valve inlet connection 4 filling connection closing device
2 primary valve operating mechanism 5 pressure regulating system
3 valve filling connection 6 valve outlet connection
Figure 1 — VIPR type A designs
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oSIST prEN ISO 10297:2023
ISO/DIS 10297:2023(E)
3.7
VIPR type B
VIPR design where the pressure regulating system (3.9) is also acting as the primary valve operating
mechanism (3.10)
Note 1 to entry: See Figure 2.
Key
1 valve inlet connection 4 filling connection closing device
2 pressure regulating system including primary valve 5 valve outlet connection
operating mechanism
3 valve filling connection
Figure 2 — General structure of a VIPR type B design
3.8
VIPR type C
VIPR design where the primary valve operating mechanism (3.10) is located downstream of the pressure
regulating system (3.9)
Note 1 to entry: The primary valve operating mechanism can be a flow selector.
Note 2 to entry: See Figure 3.
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