scope:

This International Standard specifies design, type test methods and marking requirements for cylinder valves including cylinder valves with integrated pressure regulators (VIPR) intended to be fitted to transportable gas cylinders or used as a main valve for bundles which convey compressed, liquefied or dissolved gases. Where cylinder valves are used for pressure drums or trailers this standard may be used as a guide. This International Standard does not apply to cylinder valves for cryogenic equipment, for portable fire extinguishers, or for liquefied petroleum gas (LPG) and for quick-release valves and non-return valves. Additional features of a cylinder valve other than the main shut-off function are also excluded from the scope. NOTE 1 Requirements for valves for cryogenic vessels are specified in ISO 21011 and on regional level e.g. in EN 1626. Requirements for valves for portable fire extinguishers on regional level are specified e.g. in EN 3 series. Requirements for quick-release valves and non-return valves might be specified in regional regulations/standards. For operational safety when filling and handling cylinders equipped with quick-release valves see EIGA SI 08/CGA SB-39. NOTE 2 Requirements for manufacturing tests and examinations of cylinder valves and VIPR are given in ISO 14246. NOTE 3 Additional requirements for VIPR are specified in ISO 22435 or ISO 10524-3. Additional requirements for residual pressure-retaining devices and non-return devices are specified in ISO 15996. Additional requirements for pressure-relief devices might be specified in regional regulations/standards. NOTE 4 Additional specific requirements for cylinder valves for breathing apparatuses on regional level are specified e.g. in EN 144 series. Additional specific requirements for quick-release valves for fixed firefighting systems on regional level are specified e.g. in EN 12094-4.