Fluid valve mechanism and valving method

Details Fluid valve mechanism and valving method Fluid valve mechanism and valving method

1994-04-11

1995-06-06

Walton, George L.

Fluid handling

Processes

13761413, 137815, 137883, 251250, 251282, F16K 11065, F16K 3154

Patent

active

054213584

ABSTRACT:
A piston fluid valve mechanism and method, wherein annular outer and core inner coaxial valve members are adapted to move to and fro slidably relative to one another and to bar upstream-to-downstream fluid flow when mutually juxtaposed into seated position but adapted to enable such flow when spaced apart in unseated position.

REFERENCES:
patent: 120311 (1871-10-01), Muller
patent: 637010 (1899-11-01), Mumford
patent: 667553 (1901-02-01), Mumford
patent: 1065916 (1913-07-01), Brown
patent: 1182737 (1916-05-01), Bartz
patent: 1387446 (1921-08-01), Astier
patent: 2238374 (1941-04-01), Sallee
patent: 2713350 (1955-07-01), Payne
patent: 2880748 (1959-04-01), Elsey
patent: 3596679 (1971-08-01), Sugden, Jr.

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