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Safety valves
Operating & Maintenance
Only trained and technically competent
personnel should consider overhaul, re-set
or performance testing of safety valves.
The safety valve is supplied with either a
lead security seal or crimped cover to deter
unauthorised access to the pressure
regulation device.
Under no circumstances should the set
pressure of the safety valve be altered to a
different pressure than that stamped on the
valve without the permission of the
installation designer.
If the set pressure must be altered then use
only correct parts supplied by Seetru and in
accordance with the instructions available
for the valve type.
Safety valves must be frequently tested and
regularly maintained.
The set pressure should be periodically
checked for accuracy.
When fitted, the lifting device should be
operated at pressures not less than 75% of
the set pressure to ensure free and easy
movement of internal parts.
The frequency of tests is influenced by
factors such as the severity of the operating
environment and aggressiveness of the
pressurised medium.
Soft seals and springs should be replaced
as part of the maintenance procedure.
Do not paint or coat the installed safety
valve (see also Preventive maintenance
schedule for the compressor).
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