Method and apparatus for sealing valve stems

Details Method and apparatus for sealing valve stems Method and apparatus for sealing valve stems

1983-12-21

1985-12-03

Chambers, A. Michael

Valves and valve actuation

Mechanical movement actuator

Particularly packed or sealed

251223, 277205, 277 93SD, F16K 3144, F16J 1534

Patent

active

045561966

ABSTRACT:
A valve is provided with an improved seal between the valve body and the rotatable valve stem. A high pressure fluid seal is formed by a pressure-responsive lip seal. A spring positioned between the lip seal and the valve stem sealing surface provides a substantially axially directed force to a metal O-ring, which biases the lip seal into sealing engagement with the valve body and stem under relatively low pressure.

REFERENCES:
patent: 1363378 (1920-12-01), Vuilleumer
patent: 2498916 (1950-02-01), Espegren
patent: 2660459 (1953-11-01), Collins
patent: 2705177 (1955-03-01), Waring
patent: 3326560 (1967-06-01), Trbovich
patent: 4061157 (1977-12-01), Hanssen
patent: 4118007 (1978-10-01), Scapes

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