This Standard specifies outlet connection dimensions for a system of diameter-indexed valve connections for a limited range of nominated gases.
NOTE: Requirements for other aspects of the valves are specified by reference to AS 2473. Requirements for valves employing the pin-indexed outlet connections (for medical application) are specified in AS 2472.
This Standard does not apply to valves for portable gas cylinders of less than 11 kg water capacity for self-contained breathing apparatus, or to valves for fire extinguishers.