Check valve

Details Check valve Check valve

1978-07-21

1980-09-16

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137499, F16K 1503

Patent

active

042224080

ABSTRACT:
A check valve having a body with a passage therethrough, a pair of vanes pivotally mounted within said passage so that they open and close flow therethrough responsive to flow in one direction, said vanes having an arcuate shape to create a smooth venturi passage between each vane and the opposed wall of the body so that the vanes open responsive to excess flows in the direction opposite to said one direction.

REFERENCES:
patent: 947166 (1910-01-01), Smith
patent: 1712418 (1929-05-01), Boynton
patent: 2293956 (1942-08-01), Walthers
patent: 3053275 (1962-09-01), Waterfill
patent: 3967642 (1976-07-01), Logsdon

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