Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Liquid supplied at valve interface
Patent
1983-06-20
1985-03-26
Walton, George L.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Liquid supplied at valve interface
13724622, 251309, 251312, 251316, F16K 522
Patent
active
045066965
ABSTRACT:
A rotatable valve member for use in controlling fluid flow in a conduit, such as a conduit used for the transmission of liquids and gas in oil servicing operations, is disclosed. The plug valve has a rotatable cylindrical plug member received within a body member. Two semi-cylindrical inserts are positioned between the rotatable plug and the body member, each insert having a tapered outer surface and a cylindrical inner bore. A close fitting surface on the inner bore of the insert establishes a gas tight metal-to-metal seal with the plug. Lubrication is injected through the plug into a groove on the close fitting insert sealing surface. A trapezoidal seal is received in a mating groove on the tapered exterior of the insert.
REFERENCES:
patent: 1086221 (1914-02-01), Reynolds
patent: 2461041 (1949-02-01), Donaldson
patent: 2646960 (1949-01-01), Ericson
patent: 2647720 (1953-08-01), Volpin
patent: 2954961 (1960-10-01), Stogner et al.
patent: 3133722 (1964-05-01), McGuire et al.
patent: 3346002 (1967-10-01), Thompson, Jr. et al.
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