Safety devices for protection
against excessive pressure
Part 1: Safety valves
BS ISO 4126-1:2013
This part of ISO 4126 specifies general requirements for safety valves irrespective of the fluid for which
they are designed.
It is applicable to safety valves having a flow diameter of 4 mm and above which are for use at set
pressures of 0,1 bar gauge and above. No limitation is placed on temperature.
This is a product standard and is not applicable to applications of safety valves.
against excessive pressure
Part 1: Safety valves
BS ISO 4126-1:2013
This part of ISO 4126 specifies general requirements for safety valves irrespective of the fluid for which
they are designed.
It is applicable to safety valves having a flow diameter of 4 mm and above which are for use at set
pressures of 0,1 bar gauge and above. No limitation is placed on temperature.
This is a product standard and is not applicable to applications of safety valves.
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