Diaphragm seal

Details Diaphragm seal Diaphragm seal

1990-06-13

1991-07-16

Walton, George L.

Valves and valve actuation

Fluid actuated or retarded

Flexible wall expansible chamber reciprocating valve actuator

92 98R, F16K 717

Patent

active

050318756

ABSTRACT:
A fluid flow control valve has a diaphragm for sealing against a valve seat. The diaphragm includes two generally vertical annular lips extending upwardly and downwardly from a peripheral bead of the diaphragm. The bead is located at an interface between two mating portions of the valve with the lips received in annular channels located in the mating valve portions. The channels are configured relatively to the lips to bend the lips out of their normal, undistorted orientation to impose a biasing force on the lips tending to seal the lips in the channels.

REFERENCES:
patent: 2283439 (1942-05-01), Herman
patent: 2300722 (1942-11-01), Adams et al.
patent: 3593956 (1971-07-01), McCarty, Jr.
patent: 4175590 (1979-11-01), Grandclement
patent: 4505450 (1985-03-01), Saarem et al.
patent: 4658585 (1987-04-01), Kamenoto et al.
patent: 4671485 (1987-06-01), Saarem
patent: 4911401 (1990-03-01), Holcomb et al.

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