Bellows driver slot valve

Details Bellows driver slot valve Bellows driver slot valve

1997-07-14

1999-11-02

Walczak, David J.

Valves and valve actuation

With means to increase head and seat contact pressure

Fluid pressure

251193, 251187, F16K 2500

Patent

active

059754923

ABSTRACT:
A slot valve assembly (10) including a housing (11) having a central opening (19), a valve plate (32), a strongback (20) for carrying the valve plate, a pair of actuators (34, 36) for raising and lowering the strongback to position the valve plate over opening (19), and a second set of actuators (240) for moving valve plate (32) into seating engagement with housing (11). Second actuators (240) are in fluid communication with the working chambers (48, 50) of the first pair of actuators (34, 36). First actuators (34, 36) are located within housing (11) to give the housing a much shorter height.

REFERENCES:
patent: 4131131 (1978-12-01), Frisch
patent: 4164211 (1979-08-01), Onnen
patent: 4412671 (1983-11-01), Tiefenthaler
patent: 5163478 (1992-11-01), De Fries
patent: 5169125 (1992-12-01), Bailey
Brochure for `22000 Series, Stainless Steel Rectangular Valves,` High Vacuum Apparatus Manufacturing, Inc.: Hayward, pp. 1-6, No Date.

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