Gas cylinders — Cylinder valves — Specification and type testing

Gas cylinders — Cylinder valves — Specification and type testing

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1   Scope

This International Standard specifies design, type testing and marking requirements for:
  1. a) cylinder valves intended to be fitted to refillable transportable gas cylinders;
  2. b) main valves (excluding ball valves) for cylinder bundles;
  3. c) cylinder valves or main valves with integrated pressure regulator (VIPR);
  4. [A1_start]d) valves for pressure drums and tubes;[A1_end]
which convey compressed, liquefied or dissolved gases.

[A1_start]NOTE 1 Where there is no risk of ambiguity, cylinder valves, main valves, VIPR and valves for pressure drums and tubes are addressed with the collective term “valves” within this document.[A1_end]

This International Standard covers the function of a valve as a closure.
This International Standard does not apply to
  • — valves for cryogenic equipment, portable fire extinguishers and liquefied petroleum gas (LPG), and
  • [A1_start]— quick-release cylinder valves (e.g. for fire-extinguishing, explosion protection and rescue applications), self-closing cylinder valves or ball valves.[A1_end]

[A1_start]NOTE 2 Requirements for valves for cryogenic vessels are specified in ISO 21011 and at a regional level, e.g. in EN 1626. Requirements for LPG valves are specified in ISO 14245 or ISO 15995. Requirements for quick-release cylinder valves are specified in ISO 17871. Requirements for self-closing cylinder valves are specified. in ISO 17879. Requirements for valves for portable fire extinguishers at a regional level are specified e.g. in EN 3 series.[A1_end]

NOTE 3 Requirements for manufacturing tests and examinations of valves covered by this International Standard are given in ISO 14246.

NOTE 4 Additional requirements for VIPR are specified in ISO 22435 for industrial applications or ISO 10524‑3 for medical applications. Additional requirements for residual pressure valves with or without a non-return function are specified in ISO 15996. Additional requirements for pressure-relief devices might be specified in international/regional regulations/standards.

NOTE 5 Additional specific requirements for valves for breathing apparatus at a regional level are specified e.g. in EN 144 series. Additional specific requirements for quick-release valves for fixed fire-fighting systems are specified in ISO 16003 and at a regional level e.g. in EN 12094‑4.