Bi-petal l check-valve construction

Details Bi-petal l check-valve construction Bi-petal l check-valve construction

1988-12-14

1989-09-19

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Direct response valves

137514, 137904, F16K 1503

Patent

active

048671991

ABSTRACT:
A stiffly compliant upstop extends parallel to the hinge axis of a bi-petal check valve and provides essentially a continuous line of contact with the downstream side of each valve member. This line of contact is symmetrically located to span virtually the entire distance between the spaced hinge-suspension points unique to each valve member. And continuity of the respective lines of upstop contact is maintained throughout a terminal range of angular displacement, as the upstop compliantly deforms in approach to the full-open condition of the respective valve members.

REFERENCES:
patent: 2877792 (1959-03-01), Tybus
patent: 4230148 (1980-10-01), Ogle
patent: 4249567 (1981-02-01), Weiss
patent: 4257444 (1981-03-01), Ogle
patent: 4351358 (1982-09-01), Ogle

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