This part of ISO 15500 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 part of ISO 15500 is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using natural gas in accordance with ISO 15403 (all parts). 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.
ISO 15500-3:2012 Referenced Document
ISO 15500-1 Road vehicles - Compressed natural gas (CNG) fuel system components - Part 1: General requirements and definitions*, 2015-12-01 Update
ISO 15500-2 Road vehicles - Compressed natural gas (CNG) fuel system components - Part 2: Performance and general test methods*, 2016-05-01 Update
ISO 15500-3:2012 history
2020ISO 15500-3:2020 Road vehicles — Compressed natural gas (CNG) fuel system components — Part 3: Check valve
2016ISO 15500-3:2012/Amd 1:2016 Road vehicles - Compressed natural gas (CNG) fuel system components - Part 3: Check valve; Amendment 1
2012ISO 15500-3:2012 Road vehicles - Compressed natural gas (CNG) fuel system components - Part 3: Check valve
2001ISO 15500-3:2001 Road vehicles - Compressed natural gas (CNG) fuel system components - Part 3: Check valve