Check valve with valve opening device

Details Check valve with valve opening device Check valve with valve opening device

1991-01-23

1992-05-19

Rivell, John

Fluid handling

Line condition change responsive valves

Safety cut-off requiring reset

137522, 251297, F16K 1518, F16K 1728

Patent

active

051138999

ABSTRACT:
In a check valve with a valve opening device, a check valve member (32) inserted into a check valve chamber (21) formed in a valve box (20) is resiliently urged for valve closing by means of a check spring (33) as well as the check valve member (32) is manipulated for valve opening through a manipulation lever (45), an actuator shaft (43) and a valve opening member (36) in order. The valve opening member (36) is adapted to be held at a valve opening position (F) by means of a valve opened state holding means (38). The valve opened state holding means (38) is arranged in both the valve opening member (36) and the valve box (20). A manipulation lever return spring (46) is disposed in a manipulation force transmitting system from the manipulation lever (45) to the valve box (20) through the actuator shaft (43).

REFERENCES:
patent: 4131126 (1978-12-01), Chromik
patent: 5036666 (1991-08-01), Vasselet

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