Valves and valve actuation – Pivoted valves
Patent
1987-08-24
1989-04-18
Chambers, A. Michael
Valves and valve actuation
Pivoted valves
251180, 251359, F16K 116
Patent
active
048220000
ABSTRACT:
A segmented ball valve has a rotatably mounted segmented ball valve element positioned to rotate eccentrically in a valve body with respect to three valve body sealing elements about the sealing opening for the valve body. The sealing elements include a compression seal of a flexible sealing element operative at one angular closure position of the ball valve element, a metal-to-metal seal with a flexible metal element operative in a second angular closure position and a metal-to-metal compression seal operative in a third angular closure position.
REFERENCES:
patent: 3131906 (1964-05-01), King
patent: 3191906 (1965-06-01), Zeigler et al.
patent: 3301523 (1967-01-01), Lowrey
patent: 3379408 (1968-04-01), Lowrey
Chambers A. Michael
Fox John C.
Rockford Controls Corporation
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