Variable orifice ball value

Details Variable orifice ball value Variable orifice ball value

1996-07-30

1997-11-25

Fox, John

Fluid handling

Systems

Flow path with serial valves and/or closures

251121, F16K 510

Patent

active

056901429

ABSTRACT:
A variable orifice ball valve includes an external housing with a longitual fluid bore formed therethrough. A ball member is rotatably positioned within the external housing. The ball member can include first and second ball portions, with the longitudinal fluid bore formed through the ball member and a pressure port formed through the ball member. An elastically expansible sleeve member is secured to an inner wall of the ball member, the elastically expansible sleeve member including opposing end portions and a middle section. The end portions are secured to an inner wall of the ball member, the elastically expansible sleeve member defining an expansible chamber between the inner wall of the ball member and the elastically expansible sleeve member, such that a variable sized fluid port is formed on the inner surface of the elastically expansible sleeve member for restricting fluid flow by expanding the sleeve member upon introduction of a pressurized fluid through the fluid bore and pressure port.

REFERENCES:
patent: 4111229 (1978-09-01), Christian

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