Check valve for liquids

Details Check valve for liquids Check valve for liquids

1995-04-06

1997-12-02

Nguyen, Hoang

Fluid handling

Line condition change responsive valves

Direct response valves

13754321, 251368, F16K 1500

Patent

active

056925395

ABSTRACT:
A check valve for a liquid control system. The check valve includes a body member and a cap member which define an internal chamber that communicates an inlet tube with an outlet tube. Disposed within the chamber is a disc and a biasing means. The disc engages an annular valve seat formed in the the body member. This disc is biased by the biasing means to obstruct the inlet opening and close off the chamber from the inlet tube. The cap member also includes alignment members which position the biasing member and stop members which limit the displacement of the disc.

REFERENCES:
patent: 2223994 (1940-12-01), Johnson
patent: 3086544 (1963-04-01), Yost
patent: 4147184 (1979-04-01), Jess
patent: 4628959 (1986-12-01), Parker et al.
patent: 4805663 (1989-02-01), Szlaga
patent: 4909477 (1990-03-01), Heiman
patent: 5092361 (1992-03-01), Masuyama et al.
patent: 5275312 (1994-01-01), Labruzzo

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