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M00003496
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ISO 10920:1997
Transportable gas cylinders -- 25E taper thread for connection of valves -- Specificationstandard by International Organization for Standardization, 03/01/1997
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This International Standard specifies definitions, dimensions and tolerances of a taper screw thread of nominal diameter 25,8 mm (designated 25E), for the connection of valves to medical and industrial gas cylinders.
This International Standard does not cover the connection requirement for
mechanical strength;gas tightness;capability of repeated assembly and dismounting operations.Inspection gauges are covered by ISO 11191