Umbrella check valves

Details Umbrella check valves Umbrella check valves

1994-10-04

1996-04-16

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

F16K 1514

Patent

active

055073182

ABSTRACT:
An umbrella-type check valve and seat which prevents excessive deflection of the valve. The valve seat has a spherical surface that substantially conforms to the contour of the underside of the check valve. Preferably, a small gap is formed between the valve and the spherical surface seat to prevent preloading of the valve.

REFERENCES:
patent: 2579855 (1951-12-01), Pockel
patent: 5027784 (1991-07-01), Osawa
patent: 5067449 (1991-11-01), Bonde

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