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Pressure relief valve is installed on the
outlet pipe
of water supply pipeline.It can maintain safe water
supply pressure inside the pipe and prevent
pipeline and equipment damage caused by
accidental escalation in water pressure.
When water pump stops functioning or pipeline
gate suddenly closes, abnormal pressure forms
inside the pipe. As the pressure gets over a certain
safety limit, pressure relief valve can open
automatically and releases the water pressure
above the safety limit, so as to ensure the safety
of pipeline and equipment. When the pressure
turns back within the safety limit, the pressure
relief will close slowly.
Utilization
State of Pressure Relief Valve
When water pressure inside the pipeline becomes
greater than the specified outlet pressure, the
pressure relief pilot valve opens and simultaneously
releases the pressure in the pressure chamber. At
this time, the main valve gate is pushed open and keeps
the main valve in open state.
When the pressure returns to the safety limit, the pilot
valve closes simultaneously, pressure chamber in main
valve recovers pressure accumulation state, and main
valve can be closed slowly.
In this way the pressure inside the pipeline can be
maintained.
Pressure
Adjusting Range
0.2kgf/cm2
- 4kgf/cm2
3kgf/cm2
- 7kgf/cm2
Special orders can be
arranged for higher pressure
adjustment range.
In the case of high pressure, valve body made by
stainless steel is recommended.
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Curves for Released flow by Pressure Relief Valve
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