Gate valve

Details Gate valve Gate valve

1988-11-21

1990-01-23

Walton, George L.

Fluid handling

With casing, support, protector or static constructional...

Jacketed

138 943, 251195, 251327, 251328, F16K 302, F16L 700

Patent

active

048951811

ABSTRACT:
A packingless gate valve comprises a housing having two opposed resilient sleeve units that compressibly engage end to end in the valve open condition and engage opposite sides of the gate in the valve closed condition. Each sleeve unit is a resilient annular body formed at one end with an axially projecting seal lip near the inner periphery and has a stiffener ring enclosed adjacent the outer periphery at the one end. An integral gasket forming flange is formed on the other end of the sleeve body.

REFERENCES:
patent: 2873943 (1959-02-01), Williams
patent: 3000608 (1961-09-01), Williams
patent: 3207471 (1965-09-01), Williams
patent: 3333816 (1967-08-01), Williams et al.
patent: 4201365 (1980-05-01), Paptzun et al.
patent: 4257447 (1981-03-01), Clarkson
patent: 4603864 (1986-08-01), Raftis
patent: 4623122 (1986-11-01), Gambetta
patent: 4625942 (1986-12-01), Nelson
patent: 4688597 (1987-08-01), Clarkson et al.

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