Valves and valve actuation – Mechanical movement actuator – Particularly packed or sealed
Patent
1981-02-25
1983-02-15
Rosenthal, Arnold
Valves and valve actuation
Mechanical movement actuator
Particularly packed or sealed
251282, 251330, F16K 4114, F16K 4116
Patent
active
043737005
ABSTRACT:
A gate valve including the usual resilient seal around the stem also includes a single metal seal which provides a fluid-tight metal-to-metal seal around the stem when the valve is either in a fully opened or a fully closed position. In a fully closed valve position the resilient seal around the valve stem can be replaced without interfering with the operation of the valve. The metal seal can be used to provide and maintain a fluid-tight seal between the stem, the valve body and the valve bonnet when extreme conditions of temperature, pressure and/or fluid contact where the resilient seal might fail.
REFERENCES:
patent: 1218252 (1917-03-01), Gibney
patent: 1237719 (1917-08-01), Spencer
patent: 1316585 (1919-09-01), Logan
patent: 1495964 (1921-07-01), Reid
patent: 1910994 (1933-05-01), Joyce
patent: 1926529 (1928-05-01), Goldsborough
patent: 3013769 (1961-03-01), Volpin
patent: 3032310 (1959-02-01), Hansen
patent: 3053269 (1960-10-01), Allen
patent: 3089509 (1955-01-01), Collins
patent: 3412750 (1968-11-01), Volpin
patent: 3993285 (1976-11-01), Conley
patent: 4029294 (1977-06-01), McCaskill et al.
patent: 4149558 (1979-04-01), McGee et al.
patent: 4272055 (1981-06-01), Herd
FMC Corporation
Guernsey L. B.
Megley R. B.
Ritt, Jr. W. W.
Rosenthal Arnold
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