ISO 15500-21:2023

Road vehicles — Compressed natural gas (CNG) fuel system components — Part 21: Discharge line closures

This document specifies tests and requirements for discharge lines closures, 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?15403-1. 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.

Edition	2023
Standard Part No	21
Published Date	2023
Published By	International Standardization Organisation
Page Count	4