ISO 12619-4:2016

DRAFT INTERNATIONAL STANDARD
ISO/DIS 12619-4
ISO/TC 22/SC 41 Secretariat: UNI
Voting begins on: Voting terminates on:
2015-05-08 2015-08-08
Road vehicles — Compressed gaseous Hydrogen
(CGH2) and Hydrogen/Natural gas blends fuel system
components —
Part 4:
Check Valve
Véhicules routiers — Composants des circuits d’alimentation pour hydrogène gazeux comprimé (CGH2) et
mélanges de gaz naturel et hydrogène —
Partie 4: Clapet de nonretour
ICS: 43.060.40
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ISO/DIS 12619-4:2015(E)
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PROVIDE SUPPORTING DOCUMENTATION. ISO 2015

ISO/DIS 12619-4:2015(E)
© ISO 2015
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ii © ISO 2015 – All rights reserved

ISO/DIS 12619-4:2015(E)
Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 2
4 Marking . 2
5 Construction and assembly . 3
6 Tests . 3
6.1 Applicability . 3
6.2 Hydrostatic strength . 4
6.3 Leakage . 4
6.4 Continued operation . 4
ISO/DIS 12619-4:2015(E)
Foreword
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The committee responsible for this document is 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
— Part 4: Check valve
iv © ISO 2015 – All rights reserved

DRAFT INTERNATIONAL STANDARD ISO/DIS 12619-4:2015(E)
Road vehicles — Compressed gaseous Hydrogen
(CGH2) and Hydrogen/Natural gas blends fuel system
components —
Part 4:
Check Valve
1 Scope
This International Standard specifies general requirements and definitions of Compressed Gaseous
Hydrogen (CGH2) and Hydrogen/Natural gas blends fuel system components, intended for use on the
types of motor vehicles defined in ISO 3833. It also provides general design principles and specifies
requirements for instructions and markings.
It is applicable to vehicles using Compressed Gaseous Hy
...