Gas cylinders. Parallel threads for connection of valves to gas cylinders - Specification

Gas cylinders. Parallel threads for connection of valves to gas cylinders - Specification

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1   Scope

This part of ISO 15245 specifies definitions, dimensions and tolerances of parallel screw threads of nominal diameter 30 mm (designated 30P), 25 mm (designated 25P) and 18 mm (designated 18P), for the connection of valves to medical and industrial gas cylinders.
This part of ISO 15245 does not cover the connection requirements for:
  • — mechanical strength;
  • — gas tightness;
  • — capability of repeated assembly and dismounting operations1).