Actuator and zone valve

Details Actuator and zone valve Actuator and zone valve

1994-05-03

1996-07-30

Lee, Kevin

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251171, F16K 506

Patent

active

055404146

ABSTRACT:
A valve body including a first body member and a second body member adjacent the first body member, with the first and second body members defining a through-passage. A ball valve element having a bore therethrough is disposed within the valve body. A ball seat is interposed between the first and second body members. The ball seat is positioned to sealingly engage the ball valve element when the ball valve element is in the closed position to prevent fluid from passing by the ball valve element. The ball seat is resiliently biased against the first body member and against the ball valve element by a single biasing member positioned to provide both a fluid seal and a resilient bias between the ball seat and the first body member.

REFERENCES:
patent: 3248080 (1966-04-01), Plasko
patent: 3561730 (1971-02-01), Hurst
patent: 3974427 (1976-08-01), Carson
patent: 4020864 (1977-05-01), Church, Jr.
patent: 4203573 (1980-05-01), Boss
patent: 4269229 (1981-05-01), Saarem et al.
patent: 4667926 (1987-05-01), Takeda et al.
patent: 4762301 (1988-08-01), Wozniak et al.
patent: 4800308 (1989-01-01), Tice
patent: 4850319 (1989-07-01), Imoehl
patent: 4957072 (1990-09-01), Goldowsky
patent: 5096156 (1992-03-01), Wylie et al.
patent: 5131623 (1992-07-01), Giordani

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