Cam locked ball valve

Details Cam locked ball valve Cam locked ball valve

1974-06-20

1976-01-27

Weakley, Harold W.

Fluid handling

Removable valve head and seat unit

Retained by bonnet or closure

251159, 251163, F16K 2500

Patent

active

039346064

ABSTRACT:
A trunnion mounted ball valve with cam plates mounted on the stem axis. Cam followers on the seat rings engage in cam slots in the plates to move the seats positively into firm engagement with the ball at the open and closed positions thereof and retract them free of the ball as it is moved between those positions. The seats slide axially in slide rings which are threaded into the body around the flow passage. The valve ball, seat rings, and slide rings may be removed as a unit through the valve top opening.

REFERENCES:
patent: 2661926 (1953-12-01), Resek
patent: 2883146 (1959-04-01), Knox
patent: 3245653 (1966-04-01), Lavigueur
patent: 3269691 (1966-08-01), Meima
patent: 3323542 (1967-06-01), Magos
patent: 3776505 (1973-12-01), Nakanishi

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