Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve
Patent
1983-07-18
1985-04-30
Weakley, Harold W.
Valves and valve actuation
With means to increase head and seat contact pressure
Seat pressed to valve
251159, 251328, 251368, F16K 2500
Patent
active
045139474
ABSTRACT:
A valve of special usefulness in handling solids-containing or solids-producing fluids comprises a floating valve seat comprised of inner and outer rings, the outer ring being fixed within the valve body and the inner ring being urged directly from the outer ring by one or more springs against a gate element controlling the flow of fluids through the valve. The springs are housed within chambers provided by aligned cavities in the inner and outer rings while similarly aligned notches house a bellows or accordian shaped flexible metal seal. The flexible metal seal is in contact with the fluid but prevents entry of fluid between the rings to the spring; thus, the action of the inner and outer rings is not impeded by solids depositing from the fluid.
REFERENCES:
patent: 3220694 (1965-11-01), Eschbaugh
patent: 3266525 (1966-08-01), Wolter
patent: 3458172 (1969-07-01), Burrows
patent: 4126295 (1978-11-01), Natalizia
patent: 4278236 (1981-07-01), Janich
patent: 4327893 (1982-05-01), Bachmann
patent: 4431159 (1984-02-01), Stubbs
Baran Robert J.
Sandford Dean
Union Oil Company of California
Weakley Harold W.
Wirzbick Gregory F.
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