1 Scope
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.