Automatic relief valve

Details Automatic relief valve Automatic relief valve

1990-01-24

1991-07-23

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Bi-directional flow valves

137526, 137846, F16K 1718

Patent

active

050335049

ABSTRACT:
This invention relates to a relief valve used where there is an induced flow through equipment. The relief valve controls the flow through the equipment at a uniform rate and also provides for pressure relief of the liquid used in the equipment. The valve comprising a body having a flow passage therethrough with an inlet and an outlet for connection into a pipe having induced flow therethrough. A bypass passage from the body between the inlet and the outlet and open to ambient conditions at the free end is also provided. There is a flexible resilient diaphragm in the bypass passage perforated to permit flow therethrough in one direction only and the perforation variable in size dependant on the degree of flexing of the diaphragm.

REFERENCES:
patent: 1038685 (1912-09-01), Titus
patent: 2431457 (1947-11-01), Bondurant
patent: 3086542 (1963-04-01), Mosier
patent: 3941149 (1976-03-01), Mittleman
patent: 3976096 (1976-08-01), Kass
patent: 4458711 (1984-07-01), Flider
patent: 4493339 (1985-01-01), Porter

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