Gas tightness of equipment for gas welding and allied processes
25.160.30 - Welding equipment
EN ISO 9090
Reemplaza a: BS EN 29090:1992
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.
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
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