ISO 20766-12:2019

INTERNATIONAL ISO
STANDARD 20766-12
First edition
2019-12
Road vehicles — Liquefied petroleum
gas (LPG) fuel systems components —
Part 12:
Non-return valve
Véhicules routiers — Équipements pour véhicules utilisant le gaz de
pétrole liquéfié (GPL) comme combustible —
Partie 12: clapet anti-retour
Reference number
©
ISO 2019
© ISO 2019
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ii © ISO 2019 – All rights reserved

Contents Page
Foreword .iv
1 Scope . 1
2 Normative references . 1
3 Terms and definitions . 1
4 Markings . 2
5 Construction and assembly . 2
6 Tests . 2
6.1 Applicability . 2
6.2 Hydrostatic strength . 3
6.3 Leakage . 3
6.4 Continued operation . 3
Bibliography . 5
Foreword
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This document was prepared by Technical Committee ISO/TC 22, Road vehicles, Subcommittee SC 41,
Specific aspects for gaseous fuels.
A list of all parts in the ISO 20766 series can be found on the ISO website.
Any feedback or questions on this document should be directed to the user’s national standards body. A
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iv © ISO 2019 – All rights reserved

INTERNATIONAL STANDARD ISO 20766-12:2019(E)
Road vehicles — Liquefied petroleum gas (LPG) fuel
systems components —
Part 12:
Non-return valve
1 Scope
This document speci
...