ISO 12619-3:2014

Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components — Part 3: Pressure regulator

ISO 12619-3:2014 specifies tests and requirements for the pressure regulator, a compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system component intended for use on the types of motor vehicles defined in ISO 3833. ISO 12619-3:2014 is applicable to vehicles using CGH2 in accordance with ISO 14687‑1 or ISO 14687‑2 and hydrogen/natural gas blends using natural gas in accordance with ISO 15403‑1 and ISO/TR 15403‑2. It is not applicable to the following: -liquefied hydrogen (LH2) fuel system components; -fuel containers; -stationary gas engines; -container mounting hardware; -electronic fuel management; -refuelling receptacles.

Véhicules routiers — Composants des circuits d'alimentation pour hydrogène gazeux comprimé (CGH2) et mélanges de gaz naturel et hydrogène — Partie 3: Regulateur de pression

General Information

• Status: Published
• Publication Date: 10-Jun-2014
• ICS: 43.060.40 - Fuel systems
• Technical Committee: ISO/TC 22/SC 41 - Specific aspects for gaseous fuels
• Drafting Committee: ISO/TC 22/SC 41/JWG 5 - Joint ISO/TC 22/SC 41 - ISO/TC 197 WG: Fuel system components and refuelling connector for vehicles propelled by blends of natural gas and hydrogen
• Current Stage: 9093 - International Standard confirmed
• Completion Date: 12-Jul-2023

Relations

• Amended By: ISO 12619-3:2014/Amd 1:2016 - Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components — Part 3: Pressure regulator — Amendment 1
• Effective Date: 06-Jun-2022

Standards Content (Sample)

INTERNATIONAL ISO
STANDARD 12619-3
First edition
2014-06-15
Road vehicles — Compressed gaseous
hydrogen (CGH2) and hydrogen/
natural gas blend fuel system
components —
Part 3:
Pressure regulator
Véhicules routiers — Composants des circuits d’alimentation pour
hydrogène gazeux comprimé (CGH2) et mélanges de gaz naturel et
hydrogène —
Partie 3: Regulateur de pression
Reference number
ISO 12619-3:2014(E)
©
ISO 2014

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ISO 12619-3:2014(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
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Tel. + 41 22 749 01 11
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Published in Switzerland
ii © ISO 2014 – All rights reserved

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ISO 12619-3:2014(E)

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Marking and labelling . 2
5 Qualifications for construction and assembly . 2
6 Tests . 3
6.1 Applicability . 3
6.2 Hydrostatic strength . 4
6.3 External leakage . 4
6.4 Continued operation . 4
6.5 Insulation resistance . 5
6.6 Pressure impulse . 5
6.7 Water jacket freezing . 5
Bibliography . 6
© ISO 2014 – All rights reserved iii

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ISO 12619-3:2014(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 (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 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 22, Road vehicles, Subcommittee SC 25, Vehicles
using gaseous fuels.
ISO 12619 consists of the following parts, under the general title Road vehicles — Compressed gaseous
hydrogen (CGH2) and hydrogen/natural gas blends fuel system components:
— Part 1: General requirements and definitions
— Part 2: Performance and general test methods
— Part 3: Pressure regulator
iv © ISO 2014 – All rights reserved

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INTERNATIONAL STANDARD ISO 12619-3:2014(E)
Road vehicles — Compressed gaseous hydrogen
(CGH2) and hydrogen/natural gas blend fuel system
components —
Part 3:
Pressure regulator
1 Scope
This part of ISO 12619 specifies tests and requirements for the pressure regulator, a compressed gaseous
hydrogen (CGH2) and hydrogen/natural gas blends fuel system component intended for use on the types
of motor vehicles defined in ISO 3833.
This part of ISO 12619 is applicable to vehicles using CGH2 in accordance with ISO 14687-1 or ISO 14687-2
and hydrogen/natural gas blends using natural gas in accordance with ISO 15403-1 and ISO/TR 15403-
2. It is not applicable to the following:
— liquefied hydrogen (LH2) fuel system components;
— fuel containers;
— stationary gas engines;
— container mounting hardware;
— electronic fuel management;
— refuelling receptacles.
NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to
meet the criteria of this part of ISO 12619 and tested according to the appropriate functional tests.
NOTE 2 All references to pressure in this part of ISO 12619 are to be considered gauge pressures unless
otherwise specified.
NOTE 3 This part of ISO 12619 may not apply to fuel cell vehicles in compliance with international regulations.
2 Normative references
The following 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 11114-2, Gas cylinders — Compatibility of cylinder and valve materials with gas contents — Part 2:
Non-metallic materials
ISO 12619-1, Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel
system components — Part 1: General requirements and definitions
ISO 12619-2, Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel
system components — Part 2: Performance and general test methods
ISO 14687-1, Hydrogen fuel — Product specification — Part 1: All applications except proton exchange
membrane (PEM) fuel cell for road vehicles
© ISO 2014 – All rights reserved 1

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ISO 12619-3:2014(E)

ISO 14687-2, Hydrogen fuel — Product specification — Part 2: Proton exchange membrane (PEM) fuel cell
applications for road vehicles
ISO 15403-1, Natural gas — Natural gas for use as a compressed fuel for vehicles — Part 1: Designation of
the quality
ISO/TR 15403-2, Natural gas — Natural ga
...

DRAFT INTERNATIONAL STANDARD ISO/DIS 12619-3
ISO/TC 22/SC 25 Secretariat: UNI
Voting begins on Voting terminates on

2012-01-06 2012-06-06
INTERNATIONAL ORGANIZATION FOR STANDARDIZATION    МЕЖДУНАРОДНАЯ ОРГАНИЗАЦИЯ ПО СТАНДАРТИЗАЦИИ    ORGANISATION INTERNATIONALE DE NORMALISATION


Road vehicles — Compressed Gaseous Hydrogen (CGH2) and
Hydrogen/Natural Gas blend fuel system components —
Part 3:
Pressure regulator
Véhicules routiers — Composants des circuits d'alimentation pour hydrogène gazeux comprimé (CGH2) et
mélanges de gaz naturel et hydrogène —
Partie 3: Regulateur de pression
ICS 43.060.40








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the English language only.
Conformément aux dispositions de la Résolution du Conseil 15/1993, ce document est distribué
en version anglaise seulement.

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Secrétariat central de l'ISO au stade de publication.



THIS DOCUMENT IS A DRAFT CIRCULATED FOR COMMENT AND APPROVAL. IT IS THEREFORE SUBJECT TO CHANGE AND MAY NOT BE
REFERRED TO AS AN INTERNATIONAL STANDARD UNTIL PUBLISHED AS SUCH.
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DRAFT INTERNATIONAL STANDARDS MAY ON OCCASION HAVE TO BE CONSIDERED IN THE LIGHT OF THEIR POTENTIAL TO BECOME
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©  International Organization for Standardization, 2012

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ISO/DIS 12619-3

Copyright notice
This ISO document is a Draft International Standard and is copyright-protected by ISO. Except as permitted
under the applicable laws of the user’s country, neither this ISO draft nor any extract from it may be
reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic,
photocopying, recording or otherwise, without prior written permission being secured.
Requests for permission to reproduce should be addressed to 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 [e-mail]
Web www.iso.org
Reproduction may be subject to royalty payments or a licensing agreement.
Violators may be prosecuted.

ii © ISO 2012 – All rights reserved

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ISO/DIS 12619-3

Contents Page
Foreword . iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
3.1 lock-up pressure . 2
4 Marking and labelling . 2
5 Qualifications for construction and assembly . 2
6 Tests . 3
6.1 Applicability . 3
6.2 Hydrostatic strength . 4
6.3 External leakage . 4
6.4 Continued operation . 4
6.5 Insulation resistance . 5
6.6 Pressure impulse . 5
6.6.1 Internal impulse . 5
6.6.2 External impulse . 5
6.7 Water jacket freezing . 6

© ISO 2011 – All rights reserved iii

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ISO/DIS 12619-3

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.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2.
The main task of technical committees is to prepare International Standards. Draft International Standards
adopted by the technical committees are circulated to the member bodies for voting. Publication as an
International Standard requires approval by at least 75 % of the member bodies casting a vote.
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.
ISO 12619-3 was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 25, Road
vehicles using gaseous fuels.
ISO 12619 consists of the following parts, under the general title Road vehicles — Compressed Gaseous
Hydrogen (CGH2) and Hydrogen/Natural Gas blends fuel system components:
 Part 1: General requirements and definitions
 Part 2: Performance and general test methods
 Part 3: Pressure regulator
iv © ISO 2011 – All rights reserved

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DRAFT INTERNATIONAL STANDARD ISO/DIS 12619-3

Road vehicles — Compressed Gaseous Hydrogen (CGH2) and
Hydrogen/Natural Gas blends fuel system components —
Part 3: Pressure regulator
1 Scope
This Standard specifies tests and requirements for the pressure regulator, a Compressed Gaseous Hydrogen
(CGH2) and Hydrogen/CNG blends fuel system component intended for use on the types of motor vehicles
defined in ISO 3833.
It is applicable to vehicles using Compressed Gaseous Hydrogen (CGH2) in accordance with ISO 14687 and
Hydrogen/Natural Gas blends. It is not applicable to the following:
a) liquefied hydrogen (LH2) fuel system components;
b) fuel containers;
c) stationary gas engines;
d) container mounting hardware;
e) electronic fuel management;
f) refuelling receptacles.
NOTE 1 It is recognized that miscellaneous components not specifically covered herein can be examined to meet the
criteria of this Standard and tested according to the appropriate functional tests.
NOTE 2 All references to pressure in this Standard are to be considered gauge pressures unless otherwise specified.
2 Normative references
The following normative documents contain provisions which, through reference in this text, constitute
provisions of this Standard. For dated references, subsequent amendments to, or revisions of, any of these
publications do not apply. However, parties to agreements based on this Standard are encouraged to
investigate the possibility of applying the most recent editions of the normative documents indicated below.
For undated references, the latest edition of the normative document referred to applies. Members of ISO and
IEC maintain registers of currently valid International Standards.
ISO 12619-1, Road vehicles - Compressed Gaseous Hydrogen (CGH2) and Hydrogen/Natural Gas blends
fuel system components - Part 1: General requirements and definitions
ISO
...