High force-gain valve

Details High force-gain valve High force-gain valve

1990-04-05

1991-12-24

Michalsky, Gerald A.

Valves and valve actuation

Fluid actuated or retarded

Piston type expansible chamber reciprocating valve actuator

251155, 251282, F16K 3122

Patent

active

050745212

ABSTRACT:
A high force gain valve including a fluid inlet, a diverter to absorb pressure and flow forces, a fluid outlet, a moveable gate surrounding the diverter and interposed between inlet and outlet to effect fluid metering, and actuation rods extending out of the pressure region for positioning of the gate. The gate has a beveled sealing edge exposed to the fluid pressure within the housing which permits the gate to be force biased in the open direction. The high force gain valve is designed to reduce tensile and shear stresses so that the valve can be constructed of moderate or low tensile and shear strength materials, such as refractory materials.

REFERENCES:
patent: 3837356 (1974-09-01), Selep et al.
patent: 3964507 (1976-06-01), Jandrasi et al.
patent: 4029294 (1977-06-01), McCaskill et al.
patent: 4081174 (1978-03-01), Johnson et al.
patent: 4341370 (1982-07-01), Banks
patent: 4363465 (1982-12-01), Morrill
patent: 4378817 (1983-04-01), Houston
patent: 4383546 (1983-05-01), Walters, Jr.
patent: 4477056 (1984-10-01), Alexius
patent: 4487393 (1984-12-01), Eagen
patent: 4500070 (1985-02-01), Riollet et al.
patent: 4577654 (1986-03-01), Pringle
patent: 4643395 (1987-02-01), Williams, Jr.

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