Valves and valve actuation – Fluid actuated or retarded – With mechanical movement between actuator and valve
Patent
1989-02-15
1991-09-24
Walton, George L.
Valves and valve actuation
Fluid actuated or retarded
With mechanical movement between actuator and valve
166324, 251315, F16K 31122
Patent
active
050508393
ABSTRACT:
A valve employing a coupling disk to rotate the valve member so that rotative force is applied to the valve member in a direction away from the seat during opening of the valve and/or in a direction toward the seat during closing of the valve. Closing force is provided by a spring in a dome chamber and a gas charge in the dome chamber. A float valve controls fluid entry into the dome chamber to trap the gas charge therein while permitting the introduction of liquid from a balance-closure assist line to increase the pressure of the gas charge and assist in closing the valve member.
REFERENCES:
patent: 3826462 (1974-07-01), Taylor
patent: 3993136 (1976-11-01), Mott
patent: 4044835 (1977-08-01), Mott
patent: 4368871 (1983-01-01), Young
patent: 4421171 (1983-12-01), Haynes
patent: 4651828 (1987-03-01), Doremus
Dickson Rennie L.
Godfrey Craig W.
Noack Timothy J.
Schwendemann Kenneth L.
Gay M. H.
Otis Engineering Corporation
Walton George L.
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