Gas cylinders - Outlet connections for gas cylinder valves for compressed breathable air - Outlet connection up to a maximum cylinder working pressure of 500 bar (ISO 12209:2013 + Amd 1:2016) (consolidated version)
Transportable gas cylinders - Compatibility of cylinder and valve materials with gas contents - Part 4: Test methods for selecting steels resistant to hydrogen embrittlement (ISO 11114-4:2017)
Gas cylinders - Gases and gas mixtures - Determination of fire potential and oxidizing ability for the selection of cylinder valve outlets (ISO 10156:2017)