Standards Development

Scope

This document specifies design, type testing, marking and manufacturing tests and examinations requirements for:

a) self-closing cylinder valves;

b) self-closing cylinder valves with integrated pressure regulator (VIPR);

NOTE 1 This includes VIPR designs where the primary valve operating mechanism is located upstream of the pressure regulating system (VIPR type A) and where the primary valve operating mechanism is located at the low-pressure side of the pressure regulating system (VIPR type C).

NOTE 2 This does not include VIPR designs where the pressure regulating system is acting as the primary valve operating mechanism (VIPR type B) and designs where closure of the primary valve operating mechanism is obtained by closing the seat of the pressure regulating mechanism. Such designs are covered by ISO 10297.

for refillable transportable gas cylinders which convey compressed, liquefied or dissolved gases.

NOTE 3 The main applications for such self-closing cylinder valves are in the calibration gas and beverage industries.

NOTE 4 Where there is no risk of ambiguity, cylinder valves and VIPRs are addressed with the collective term “valves” within this document.

This document does not apply to:

— valves for cryogenic equipment, portable fire extinguishers and liquefied petroleum gas (LPG);

— quick-release cylinder valves (e.g. for fire-extinguishing, explosion protection and rescue applications) - requirements for quick-release cylinder valves are specified in ISO 17871 which contains normative references to this document;

— ball valves.

NOTE 5 Requirements for valves for cryogenic vessels are specified in ISO 21011 and at a regional level, e.g. in EN 1626. Requirements for valves for portable fire extinguishers are specified at a regional level, e.g. in EN 3 series. Requirements for self-closing LPG cylinder valves are specified in ISO 14245. Requirements for quick-release cylinder valves are given in ISO 17871. Requirements for ball valves are given in ISO 23826.

This document only covers the function of a valve as a closure. Other functions that are possibly integrated in the valve can be covered by other standards. Such standards do however not constitute requirements according to this document.

NOTE 6  Definition of and specific requirements for VIPRs in addition to those that are given in this document are specified in ISO 22435 for industrial applications or ISO 10524-3 for medical applications. Similarly, certain specific additional requirements for residual pressure valves (RPV) are given in ISO 15996.