BS ISO 15995 pdf download Gas cylinders — Specifications and testing of LPG cylinder valves — Manually operated Design and specification 4.1General 4.1.1The valve shall be capable of withstanding: operating pressures and test pressures; mechanical stresses, including dynamic loads such as pressure shocks or cyclic changes;operating temperatures. NOTEPressures are gauged unless otherwise specified. 4.1.2There shall be valve external and internal...