Fluid valve systems

Details Fluid valve systems Fluid valve systems

1992-06-12

1993-05-18

Fox, John C.

Fluid handling

Systems

Plural noncommunicating flow paths

13762544, F16K 1100

Patent

active

052111954

ABSTRACT:
A fluid valve has a valve housing defining a corner and having a valve housing cover opposite that corner. That valve housing and cover enclose a valve chamber therein. A fluid inlet or outlet is in the valve housing cover. First and second valve seats for further fluid inlets or outlets are in first and second sides, respectively, of the corner in the valve chamber. A flapper is in that chamber for selectively closing the first valve seat and alternatively the second valve seat. A flapper actuator is in the corner of the valve housing. There may be an expansible valve closing member for each valve seat. Such expansible valve closing member may have an aperture paralleling that valve seat. A pilot valve may be at the expansible valve closing member for closing its aperture. Opening of the valve is initiated by moving the pilot valve away from the aperture in the expansible valve closing member, and such opening of the valve is completed by pulling the expansible valve closing member away from its valve seat.

REFERENCES:
patent: 3516440 (1970-06-01), Whittlech et al.
patent: 3595270 (1971-07-01), McNeal, Jr.
patent: 4080990 (1978-03-01), DeBenedetti
patent: 4131142 (1978-12-01), Barr et al.

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