Rotary valve with pressure urged sealing member

Details Rotary valve with pressure urged sealing member Rotary valve with pressure urged sealing member

1986-08-20

1988-05-31

Schwadron, Martin P.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251172, 251174, 251175, 251315, F16K 520

Patent

active

047475781

ABSTRACT:
A valve consisting of a housing (1) provided with a flow-through passage (4), of a closing member (2) having the shape of a rotational body or part of a rotational body and provided with an aperture (6), and turnably disposed in said flow-through passage, and of a sealing member (3) disposed between the closing member and the housing. Between the sealing member (3) and the housing (1) has been arranged an intermediate space (8) in which when the valve is in closed position prevails a pressure urging the sealing member against the closing member (2). From said intermediate space (8) leads a passage (12) to a point close to that portion of the sealing member (3) adjacent to which an aperture communicating with the flow passage is first established when the valve is being opened.

REFERENCES:
patent: 3118650 (1964-01-01), Cooper
patent: 3266769 (1966-08-01), Shaud
patent: 3378026 (1968-04-01), Oliver
patent: 4135545 (1979-01-01), Fowler
patent: 4477055 (1984-10-01), Partridge

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