Valve with metal-to-metal sealing means

Details Valve with metal-to-metal sealing means Valve with metal-to-metal sealing means

1991-06-21

1992-09-08

Fox, John C.

Valves and valve actuation

With means to increase head and seat contact pressure

Separate actuators or actuator motion

251192, 251315, F16K 520

Patent

active

051451506

ABSTRACT:
A valve wherein a spherically shaped half ball element is arranged for rotation between open and closed positions with respect to a tubular seat element. Metal-to-metal sealing elements are disposed between the tubular seat and the valve body to develop an axial force in one direction when energized. A wedge element acts on the ball element to energize the metal-to-metal sealing elements and provide a rotation stop for the ball element. The ball element is truncated and attachable to a drive member which allows for shift of the ball element in open and closed positions. Metal-to-metal seals are provided throughout the valve.

REFERENCES:
patent: 3244002 (1966-04-01), Prono et al.
patent: 3765645 (1973-10-01), Paul, Jr.
patent: 4217923 (1980-08-01), Kindersley
patent: 4262688 (1981-04-01), Bialkowski
patent: 4428561 (1984-01-01), Thompson
patent: 4475712 (1984-10-01), DeJager
patent: 4962911 (1990-10-01), Soderberg

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