ISO/DIS 14246

Gas cylinders -- Cylinder valves -- Manufacturing tests and examinations

Bouteilles à gaz -- Robinets de bouteilles à gaz -- Essais de fabrication et contrôles

Standards Content (sample)

DRAFT INTERNATIONAL STANDARD
ISO/DIS 14246
ISO/TC 58/SC 2 Secretariat: AFNOR
Voting begins on: Voting terminates on:
2021-04-07 2021-06-30
Gas cylinders — Cylinder valves — Manufacturing tests and
examinations

Bouteilles à gaz — Robinets de bouteilles à gaz — Essais de fabrication et contrôles

ICS: 23.020.35
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ISO/DIS 14246:2021(E)
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NOTIFICATION OF ANY RELEVANT PATENT
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PROVIDE SUPPORTING DOCUMENTATION. ISO 2021
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ISO/DIS 14246:2021(E)
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ii © ISO 2021 – All rights reserved
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ISO/DIS 14246:2021(E)
Contents Page

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

Introduction ..................................................................................................................................................................................................................................v

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

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

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Cleanliness .................................................................................................................................................................................................................. 2

5 Manufacturing tests and examinations......................................................................................................................................... 2

5.1 General ........................................................................................................................................................................................................... 2

5.2 Valve test pressure ............................................................................................................................................................................... 2

5.3 Tests to be performed on each valve .................................................................................................................................... 3

5.4 Inspections and examinations to be performed on a sample and verification of the

batch documentation ......................................................................................................................................................................... 4

5.5 Procedures to verify materials of construction and components ............................................................... 4

Annex A (informative) Example of test protocol on each valve ................................................................................................. 5

Bibliography ................................................................................................................................................................................................................................ 6

© ISO 2021 – All rights reserved iii
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ISO/DIS 14246:2021(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, in collaboration with the European Committee for Standardization (CEN) Technical

Committee CEN/TC 23, Transportable gas cylinders, in accordance with the Agreement on technical

cooperation between ISO and CEN (Vienna Agreement).

This third edition cancels and replaces the second edition (ISO 14246:2014), which has been technically

revised.
The main changes from ISO 14246:2014 are:
— the integration of the 2017 amendment,

— in clause 4, a maximum level of hydrocarbon contamination of 220 mg/m and a maximum particle

size of 200 µm was introduced for valves for oxygen and other oxidizing gases for general purpose

applications and the mandatory reference to ISO 15001 was changed to an example for medical

applications,

— in clause 5.2, indent c), the value of the test pressure for specific acetylene valves has been reduced

from 37 bar to 35 bar,

— in clause 5.4, the requirements concerning the verification of the assembly with regard to the use of

correct components and assembly torques were clarified.

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.
iv © ISO 2021 – All rights reserved
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ISO/DIS 14246:2021(E)
Introduction

This document covers the function of a valve as a closure (defined by the UN Model Regulations).

Additional features of valves (e.g. pressure regulators, residual pressure-retaining devices, non-return

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

Valves complying with this document can be expected to perform satisfactorily under normal service

conditions.

This document pays particular attention to manufacturing tests and examinations of valves designed

and type tested according to ISO 10297.
This document has been written for referencing in the UN Model Regulations [1].

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.
© ISO 2021 – All rights reserved v
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DRAFT INTERNATIONAL STANDARD ISO/DIS 14246:2021(E)
Gas cylinders — Cylinder valves — Manufacturing tests and
examinations
1 Scope

This document describes the procedures and acceptance criteria for manufacturing tests and

examinations (sometimes called initial inspection and tests) of valves designed and type tested

according to ISO 10297.
This document is applicable to:

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), and
d) valves for pressure drums and tubes.

NOTE 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” wi
...