Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve
Patent
1978-12-22
1980-11-04
Cohan, Alan
Valves and valve actuation
With means to increase head and seat contact pressure
Seat pressed to valve
251306, 251174, F16K 2500
Patent
active
042315468
ABSTRACT:
Disclosed herein are valve seals wherein an annular metallic seal member is retained in an annular recess in a valve body wall, the seal member being resiliently deformable in both axial and radial directions. A resilient annular Belleville spring portion is provided linking an inner sealing portion and an outer flange portion which is sealingly engaged by the valve body. When a valve employing this seal arrangement is closed, differential pressure acting from either direction urges a valve closure member and the seal member in a downstream direction, and forces the seal member and the valve closure member into tighter sealing engagement.
REFERENCES:
patent: 2934312 (1960-04-01), Stevens
patent: 3077331 (1963-02-01), Burtis
patent: 3077332 (1963-02-01), Burtis
patent: 3153427 (1964-10-01), Burtis
patent: 3260502 (1966-07-01), Plumer
Eggleston Philip W.
Taylor, Jr. Eugene R.
Cohan Alan
Fisher Controls Company, Inc.
Limpus Lawrence L.
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