Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve
Patent
1976-09-13
1977-08-23
Rosenthal, Arnold
Valves and valve actuation
With means to increase head and seat contact pressure
Seat pressed to valve
251326, 138 943, 126285A, F16K 3312, F16K 3316
Patent
active
040435342
ABSTRACT:
Sealing means for a sliding gate valve with a frame having a bottom frame member, a top frame member with an aperture therein generally transverse to the direction of fluid flow through the valve, and parallel, rectilinear side frame members and a gate having parallel, rectilinear sides adapted for sliding movement through the aperture to a closed position within the frame to restrict the flow of fluid through the frame. The seal is effected by a flange that is fixedly mounted on at least one frame member downstream of the aperture and in the interior of the frame and is parallel to the gate, and a longitudinal strip of resilient material fixedly mounted on at least one side frame member in the interior of the frame and in the plane of the gate. The flange is adapted to contact the downstream surface of the gate and limit the gate's downstream displacement due to the pressure of fluid when it is in the closed position and subjected to fluid pressure against its upstream surface. The longitudinal strip has a curved transverse cross-section and is adapted to effect compressed, sealing contact along the apex of its convex surface with the side edge of the gate in the closed position.
REFERENCES:
patent: 1065839 (1913-06-01), Ritzman
patent: 1868147 (1932-07-01), Kruse
patent: 2489915 (1949-11-01), Loewenheim
patent: 2996063 (1961-08-01), Lowe
patent: 3084715 (1963-04-01), Scharres
patent: 3228389 (1966-01-01), Lowe et al.
patent: 3377047 (1968-04-01), Scholl
patent: 3565393 (1971-02-01), Trythall
patent: 3760593 (1973-09-01), Whipps
patent: 3897932 (1975-08-01), Hale
Mosser Industries, Inc.
Rosenthal Arnold
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