Check valve

Details Check valve Check valve

1985-12-16

1987-04-07

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

1375157, 13753317, F16K 1502

Patent

active

046552480

ABSTRACT:
A check valve (22) is provided with a tapered plug (32), freely longitudinally movable with respect to a valve seat surface (34) disposed about the opening of the inlet passage (24). A plurality of cutouts (36) are disposed about the outer edge of the plug (32) for passing the forward flowing fluid. An exit nozzle (38) directs reverse flowing fluid against the rear of the plug (32), assisting valve closure.

REFERENCES:
patent: 1628441 (1927-05-01), Soresi
patent: 1873782 (1932-08-01), Nixon
patent: 1897572 (1933-02-01), Cornell
patent: 2021351 (1935-11-01), Carson
patent: 2320913 (1943-06-01), Crowell
patent: 2748798 (1956-06-01), Withrow
patent: 2755816 (1956-07-01), Collins
patent: 3036594 (1962-05-01), Salisbury
patent: 3229864 (1966-01-01), Roder
patent: 4414997 (1983-11-01), Jacobson

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