Butterfly-type check valve

Details Butterfly-type check valve Butterfly-type check valve

1991-03-06

1991-09-10

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

251218, 251308, F16K 1503

Patent

active

050465279

ABSTRACT:
A butterfly-type check valve (8) in which a valve plate (18) moves translationally relative to a pivot axis (90) and incident to rotational movement (118) of the plate. The translational movement is effected by mechanical links (38, 40) which are pivotally secured to the plate and a support assembly (52, 54, 56, 76, 78). The translational movement is guided by two trunnions (30, 32) pivotally secured to the support assembly, and two rods (20, 22) rigidly secured to the plate and extending through the trunnions.

REFERENCES:
patent: 4964422 (1990-10-01), Ball

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