Trunnion type ball valve

Details Trunnion type ball valve Trunnion type ball valve

1985-11-29

1987-08-04

Chambers, A. Michael

Fluid handling

With casing, support, protector or static constructional...

Jacketed

251163, 251170, 251192, 251314, F16L 700, F16K 3144

Patent

active

046839062

ABSTRACT:
A trunnion type ball valve arranged so that biasing means is not needed to establish a seal between the valve seats and the ball when the valve is in the closed position. There is no load on the valve seats in the open position and a sufficient load in the closed position to effect a fluid seal in the closed position. The valve seats are movably mounted in the valve body so that they are displaced during opening and closing movement, but center themselves in the open and closed positions.

REFERENCES:
patent: 3073336 (1963-01-01), Johnson
patent: 3146988 (1964-09-01), Riopelle et al.
patent: 3157380 (1964-11-01), Sivyer
patent: 3407838 (1968-10-01), Boteler
patent: 3410523 (1968-11-01), Kelly et al.
patent: 3458171 (1969-07-01), Urban
patent: 4147326 (1979-04-01), Natalizia

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