Check valve

Fluid handling – Line condition change responsive valves – Direct response valves

Patent

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Details

1375123, F16K 1504

Patent

active

051410257

ABSTRACT:
A quiet closure check valve, including a housing having a valve seat toward the housing, a ball is associated with the valve seat to close the valve. The ball is received longitudinally displaceably in a recess of a spring-loaded support element that is defined by a bottom and a collar-like portion. Upon closure of the check valve, the support element rests on the housing, by spring action. The ball is lifted from the bottom of the support element and applied to the valve seat by the pressure of the fluid, in a manner free of spring forces. In this way, bothersome vibration of the ball is avoided.

REFERENCES:
patent: 4393895 (1983-07-01), Rubey
patent: 4877052 (1989-10-01), Toshio

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