Gas cylinders. Self-closing cylinder valves. Specification and type testing1 Scope This document specifies the design, type testing, marking and manufacturing tests and examinations requirements for self closing cylinder valves intended to be fitted to refillable transportable gas cylinders which convey compressed, liquefied or dissolved gases. NOTE 1 The main applications for such self closing cylinder valves are in the calibration gas and beverage industries. This document covers the function of a self closing cylinder

whether with tilting or non tilting masts or fork arms

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with 100° countersunk normal head with dome

wires and rods with requirements for yield strength and average impact energy of 47 J of all-weld metal

These are two different test procedures to measure the volatile components and there is no mathematical correlation between the results obtained with Method A and those with Method B

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reference values

Note4: BS EN 13803 need not be applicable to lines

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