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ISO/DIS 15500-3

Road vehicles — Compressed natural gas (CNG) fuel system components — Part 3: Check valve

General information

40.20     Dec 29, 2025

ISO

ISO/TC 22/SC 41

International Standard

43.060.40  

Buying

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Scope

This document specifies tests and requirements for the check valve, a compressed natural gas (CNG) fuel system component intended for use on the types of motor vehicles defined in ISO 3833.
This document is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using natural gas in accordance with the ISO 15403 series. It is not applicable to the following:
a) liquefied natural gas (LNG) fuel system components located upstream of, and including, the vaporizer;
b) fuel containers;
c) stationary gas engines;
d) container-mounting hardware;
e) electronic fuel management;
f) refuelling receptacles.

Life cycle

PREVIOUSLY

PUBLISHED
ISO 15500-3:2020

NOW

PROJECT
ISO/DIS 15500-3
40.20 DIS ballot initiated: 12 weeks
Dec 29, 2025

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