# ISO 15500-4:2012 — Withdrawn and superseded ISO standards For ISO 15500-4:2012, item title is Road vehicles — Compressed natural gas (CNG) fuel system components — Part 4: Manual valve; status code is 9599; successor is ISO 15500-4:2020; withdrawn / published date is 2012-04-04, recorded from its source on 2026-08-05. - **Identifier:** ISO 15500-4:2012 _(verified: appears in the quote below)_ - **Item title:** Road vehicles — Compressed natural gas (CNG) fuel system components — Part 4: Manual valve _(verified: appears in the quote below)_ - **Status code:** 9599 _(verified: appears in the quote below)_ - **Successor:** ISO 15500-4:2020 - **Withdrawn / published date:** 2012-04-04 _(verified: appears in the quote below)_ ## What the source says > 51563,IS,,ISO 15500-4:2012,Road vehicles — Compressed natural gas (CNG) fuel system components — Part 4: Manual valve,Véhicules routiers — Composants des systèmes de combustible gaz naturel comprimé (GNC) — Partie 4: Valve manuelle,2012-04-04,2,['43.060.40'],ISO/TC 22/SC 41,9599,[30451],[75988],['en'],5,"
ISO 15500-4:2012 specifies tests and requirements for the manual valve, a compressed natural gas (CNG) fuel system component intended for use on the types of motor vehicles defined in ISO 3833.
ISO 15500-4:2012 is applicable to vehicles (mono-fuel, bi-fuel or dual-fuel applications) using natural gas in accordance with ISO 15403.
It is not applicable to the following: