scope:

This document specifies design, type testing and marking requirements for: a) cylinder valves intended to be fitted to refillable transportable gas cylinders; b) main valves (excluding ball valves) for bundles of cylinders; c) cylinder valves or main valves with integrated pressure regulator (VIPR); NOTE 1 - This includes the following specific VIPR designs where: 1) the pressure regulating system of a VIPR is acting as the primary valve operating mechanism (VIPR type B). This also includes designs where closure of the primary valve operating mechanism of a VIPR is obtained by closing the seat of the pressure regulating mechanism.; 2) the primary valve operating mechanism of a VIPR is located at the low pressure side of the pressure regulating system (VIPR type C). d) valves for pressure drums and tubes; which convey compressed, liquefied or dissolved gases. NOTE 2 - 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. NOTE 3 - The term "pressure receptacle" is used within this document to cover instances where no differentiation is necessary between gas cylinders, bundles of cylinders, pressure drums and tubes.