Gate valve

Details Gate valve Gate valve

1982-04-29

1984-03-13

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251327, 251329, 251330, F16K 2500

Patent

active

044362838

ABSTRACT:
A gate valve including a valve body having a first bore therethrough for accommodating a reciprocating gate, and further having a second cylindrical bore extending normal to the first bore for fluid flow through the valve. A pair of opposed counterbores are formed in the body adjacent, and on opposite sides of, the first bore and in concentric, axial alignment with the second bore. Annular upstream and downstream seats are seated in the counterbores. A wave spring resting on a shoulder in the body at the bottom of one of the counterbores biases the upstream seat against the gate and maintains sealing when the valve is open.
A bonnet is slidably extended through an opening in the valve body, and is forced by fluid pressure into sealing engagement with the body.

REFERENCES:
patent: 2480529 (1949-08-01), Waag
patent: 2660191 (1953-11-01), Volpin
patent: 2810542 (1957-10-01), Bryant
patent: 3006599 (1961-10-01), Eckert
patent: 3111137 (1963-11-01), Carlin
patent: 4020864 (1977-05-01), Church
patent: 4377273 (1983-03-01), Beson

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