Gate valve with slideable closure expandable upon oscillation

Details Gate valve with slideable closure expandable upon oscillation Gate valve with slideable closure expandable upon oscillation

1980-08-04

1981-09-29

Weakley, Harold W.

Valves and valve actuation

With means to increase head and seat contact pressure

With positive reduction

251197, 251232, 251335B, F16K 2500

Patent

active

042918618

ABSTRACT:
Gate valve having in-line ports has a closure member which slides in an elongated casing between an operative position between the ports to a retracted position remote from the ports. When in operative position, the closure has a seated or expanded position against the ports and a collapsed position out of contact with the ports. Movement between collapsed and expanded positions is accomplished by oscillation of a portion of the closure member relative to plates which seat against the ports as balls which are seated in detent depressions in the plates are forced out of the depressions. The same actuator linkage which moves the closure linearly also casues oscillation.

REFERENCES:
patent: 2986371 (1961-05-01), Knox
patent: 3185435 (1965-05-01), Hauser
patent: 3237916 (1966-03-01), Bryant
patent: 3397862 (1968-08-01), Batzer

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