This document specifies definitions, dimensions and tolerances of parallel screw threads of M30 x 2, M25 x 2 and M18 x 1,5, for the connection of valves to medical and industrial gas cylinders.
This document does not contain the connection requirements for:
— mechanical strength;
— gas tightness;
— capability of repeated assembly and dismounting operations (this aspect is covered in ISO 13341).
Status: PublishedPublication date: 2021-05
Edition: 2Number of pages: 8
Technical Committee: ISO/TC 58/SC 2 Cylinder fittings
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