Ball check valve

Details Ball check valve Ball check valve

1974-08-05

1978-05-30

Cline, William R.

Fluid handling

Line condition change responsive valves

Direct response valves

137539, F16K 1504

Patent

active

040918394

ABSTRACT:
The ball in a ball type check valve is guided by a wire form ball cage. The cage is formed of two spring wire pieces each having two ball guiding legs, attached by cross members formed with interfitting loops which hold the pieces together by spring tension. Each guiding leg is formed with a reverse bend extending outwardly and then rearwardly along the valve body walls, this positioning the guide in the valve body. The cage is formed larger than the inside of the valve body in which it fits and also serves as a retainer for the ball valve spring. The assembly of the cage, spring and ball valve is inserted through the outlet port and the cage expands behind a shoulder in the body, locking it in place by spring tension.

REFERENCES:
patent: 1989199 (1935-01-01), Hummert
patent: 3002528 (1961-10-01), Leissner
patent: 3219057 (1965-11-01), Knowles
patent: 3421547 (1969-01-01), Aslan

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