Valves and valve actuation – With means to increase head and seat contact pressure – Gate valve
Patent
1987-12-16
1989-04-04
Chambers, A. Michael
Valves and valve actuation
With means to increase head and seat contact pressure
Gate valve
251167, F16K 2500
Patent
active
048179159
ABSTRACT:
A slide valve includes a valve housing and a valve closure control device which is laterally movable within the valve housing, the valve housing including two parallel flange members which have openings therein and seating surfaces on the facing sides thereof and the valve closure control device including a frame, two parallel shut-off plates mounted on the frame, the shut-off plates having triangularly-arranged cam projections on the facing sides thereof, and two shafts mounted on the frame between the shut-off plates, each shaft mounting three roll bodies for cooperation with two associated cam projections on one shut-off plate and a cam projection on the other shut off plate to move the plates apart and against the seating surfaces on the flange members when the valve closure control device is fully inserted within the valve housing and thus at its closure position therewithin.
REFERENCES:
patent: 1023955 (1912-04-01), North
patent: 3027135 (1962-03-01), Kellar
patent: 3586034 (1971-06-01), Karzimucki
patent: 4052036 (1977-10-01), Schertler
Cetec AG
Chambers A. Michael
Fox John C.
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