Fluid flow valve

Details Fluid flow valve Fluid flow valve

1993-07-16

1995-01-31

Chambers, A. Michael

Valves and valve actuation

Hermetic flexible wall seal for actuator

Bellows

251332, 251357, F16K 3100

Patent

active

053853342

ABSTRACT:
In a preferred embodiment, in a fluid flow valve having a body and having a movable member with lower face, the movable member being movable between a position spaced from a sealing position in the body when the valve is in an open position and movable to the sealing position when the valve is in a closed position, the improvement including: an annular sealing member disposed in the outer periphery of the lower face of the movable member to sealingly engage a portion of the body when the valve is in the closed position.

REFERENCES:
patent: 3057372 (1962-10-01), Sutton et al.
patent: 3191617 (1965-06-01), Maddox
patent: 3202178 (1965-08-01), Wolfe
patent: 4421298 (1983-12-01), Kujawski
patent: 4909271 (1990-03-01), Canaan et al.
patent: 4911411 (1990-03-01), Jones et al.
patent: 4991619 (1991-02-01), della Porta

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