This European Standard is applicable to a thread connection used for the connection between a gas cylinder valve and a pressure reducer for respiratory protective devices except those for diving containing breathable air, oxygen or oxygen/nitrogen. It specifies the dimensions and tolerances for connections which are used for respiratory protective devices.
BS EN 144-2:1999 history
2018BS EN 144-2:2018 Respiratory protective devices. Gas cylinder valves. Outlet connections
1999BS EN 144-2:1999 Respiratory protective devices - Gas cylinder valves - Outlet connections