Fluid handling – Line condition change responsive valves – Pilot or servo controlled
Patent
1985-07-01
1986-05-06
Cohan, Alan
Fluid handling
Line condition change responsive valves
Pilot or servo controlled
1371163, F16K 31122
Patent
active
045865337
ABSTRACT:
A pilot operated pressure relief valve system having a modulating action. The pilot valve is of the non-flowing type and comprises sleeve and control stem members translating within a channel. The sleeve member comprises an exhaust valve for relieving dome pressure on the relief valve when lifted by the control stem. The control stem translates in response to system pressure changes and comprises an inlet valve cooperating with a seat on the sleeve member to form an inlet valve closable to isolate the dome from the system pressure when the latter reaches a level predetermined in relation to a set pressure.
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Brochure, GPE Controls, "Series 94650 Non-Flowing Modulating Pilot Operated Pressure Relief Valve" (1984), 7 pages.
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Cohan Alan
Crosby Valve & Gage Company
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