Fluid handling – Diverse fluid containing pressure systems – Fluid separating traps or vents
Patent
1979-06-29
1981-01-20
Cohan, Alan
Fluid handling
Diverse fluid containing pressure systems
Fluid separating traps or vents
137488, 137492, F16K 1719, F16T 120
Patent
active
042456630
ABSTRACT:
A pressure relief valve of the diaphragm type having a condensate recovery device. The condensate recovery device is connected to the disc of the relief valve and provides means for moving condensate from an upper control chamber to either an inlet chamber or to a discharge chamber depending upon the relative pressures of the inlet and discharge chambers. Condensate from the control chamber enters a passageway in the recovery device through an inlet check valve and flows from the passageway through one of two inlet check valves into another chamber having a pressure higher than the pressure in the passageway. Each of the check valves includes a valve seat connected to one of the chambers and a ball which sits on the seat during the absence of any condensate in the passageway. Any condensate in the control chamber causes the ball at the inlet valve to float off the inlet seat and allows the condensate to enter the passageway. Condensate in the passageway causes one of the balls at the inlet valves to float and to pass the condensate to a chamber having a pressure higher than the control chamber.
REFERENCES:
patent: 3592224 (1971-07-01), Bois
patent: 3618893 (1971-11-01), Bois
patent: 3828808 (1974-08-01), Glos
Cohan Alan
FMC Corporation
Ritt, Jr. W. W.
Verhoeven J. F.
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