Pipeline ancillaries Disc, split disc and wafer check valves
10
Inert gas blanket
Vacuum breaker
Relief valve
Inert gas blanket
One DCV wafer check valve fitted with a heavy duty spring, acts as a low pressure relief valve, maintaining a constant pressure within the vessel. The second DCV wafer check valve acts as a vacuum breaker.
Pump foot valve
7.5.34
A DCV wafer check valve fitted with a soft seat, installed at the suction inlet of the pump, will ensure that the pump's prime is not lost when it stops running.
10.5 47
AI-P134-25 ST Issue 4
Page 3 of 3
DCV Wafer Check Valve Applications Sheet 1
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