Fast valve

Details Fast valve Fast valve

1991-05-14

1992-04-07

Cohan, Alan

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

251 69, F16K 31122

Patent

active

051020939

ABSTRACT:
A fast valve is disclosed that can close on the order of 7 milliseconds. It is closed by the force of a compressed air spring with the moving parts of the valve designed to be of very light weight and the valve gate being of wedge shaped with O-ring sealed faces to provide sealing contact without metal to metal contact. The combination of the O-ring seal and an air cushion create a soft final movement of the valve closure to prevent the fast air acting valve from having a harsh closing.

REFERENCES:
patent: 2333370 (1968-11-01), Graham
patent: 3656707 (1972-04-01), Marotta
patent: 3797804 (1974-03-01), Ashbaugh
patent: 4779839 (1988-10-01), Sears

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