ISO 9090:2019

Gas tightness of equipment for gas welding and allied processes ISO 9090:2019

Publication date:   Oct 25, 2019

General information

60.60 Standard published   Oct 25, 2019


ISO/TC 44/SC 8 Equipment for gas welding, cutting and allied processes

International Standard

25.160.30   Welding equipment



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This document specifies the maximum external gas leakage rates which are acceptable for equipment used for welding, cutting and allied processes and provides the procedures of measurement.
It applies to individual components which are used in the gas supply to a blowpipe from the connecting point of the hose (outlet of the cylinder valve or connecting point to a gas supply plant). It does not apply to gas supply plant.
NOTE Specific requirements on the test method and conditions/procedure for measurement of the maximum external leakages can be given in individual standards, e.g. ISO 9012 for air-aspirated hand blowpipes. Concerning the method and the conditions to be applied, the individual standard takes precedence over this document. The maximum external leakages according to this document apply.

Life cycle


ISO 9090:1989


ISO 9090:2019
60.60 Standard published
Oct 25, 2019