21/30427899 DC

This standard 21/30427899 DC BS EN ISO 22434. Gas cylinders. Inspection and maintenance of valves is classified in these ICS categories:

• 23.060.01 Valves in general
• 23.020.35 Gas cylinders

This document specifies the requirements for the inspection and maintenance of valves (including ball valves and valves with integrated pressure regulator (VIPRs)) for:

1. refillable transportable gas cylinders;

2. cylinder bundles;

3. pressure drums and tubes;

which convey compressed, liquefied or dissolved gases.

This document does not apply to valves for LPG.

This document applies to valves reused at the time of the periodic inspection of gas cylinders, cylinder bundles, pressure drums and tubes, and may be applied at any other time, e.g. at change of gas service (see ISO 11621).

This document does not apply to routine inspection of valves e.g. carried out at the time of gas cylinder filling.