Expansible plug valve

Details Expansible plug valve Expansible plug valve

1975-08-14

1976-11-09

Cohan, Alan

Valves and valve actuation

With means to increase head and seat contact pressure

Separate actuators or actuator motion

251191, F16K 324, F16K 328

Patent

active

039906779

ABSTRACT:
A valve comprising a resiliently expansible and compressible plug movable in a valve chamber to open and close a flow passage intersected by the chamber. The plug has a sealing portion which is expanded outwardly against the walls of the chamber, e.g., by being compressed in a different direction to maintain a fluid type seal when the plug is moved in a chamber between open and closed positions of the valve.

REFERENCES:
patent: 2213680 (1940-09-01), Share
patent: 2290251 (1942-07-01), Saunders
patent: 2585667 (1952-02-01), Meador
patent: 2925246 (1960-02-01), Sardeson
patent: 3612479 (1971-10-01), Smith

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