Check valve construction

Details Check valve construction Check valve construction

1976-09-07

1978-01-31

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

13753311, F16K 1504

Patent

active

040710459

ABSTRACT:
A one-way ball check valve arranged in a tube so that minimum point contact is maintained between the moving ball valve member and the surrounding stationary portions of the valve so as to prevent malfunction of the valve due to surface tension therebetween. The ball valve is contained in an enclosure having relatively flat guide portions that permits minimum contact with the ball valve surface during movement between its closed and open position. The closed end portion of the enclosure is provided with a dimple that affords minimum point contact with the ball valve when it is in the open position.

REFERENCES:
patent: 2550591 (1951-04-01), Parsons
patent: 2684080 (1954-07-01), Crowell
patent: 2918083 (1959-12-01), Clark
patent: 2989299 (1961-06-01), Modrich
patent: 2996077 (1961-08-01), Taggert
patent: 3323560 (1967-06-01), Ehlers
patent: 3421547 (1969-01-01), Aslan
patent: 3921662 (1975-11-01), Hauffe

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