Soft seat valve

Details Soft seat valve Soft seat valve

1978-06-02

1979-10-30

Weakley, Harold W.

Fluid handling

Line condition change responsive valves

Direct response valves

13754323, 251DIG1, F16K 1500

Patent

active

041724704

ABSTRACT:
A zero leakage valve, employing a radially squeezed elastomeric o-ring seal. In opening and closing, the o-ring is transferred from the valve element to a following retainer sleeve. The transfer is facilitated by relieving the squeeze on the o-ring coincidental with valve movement from closed to open positions. One embodiment is a dual element check valve employing the radial seal in conjunction with a conventional poppet and seat combination. The two valve elements act in a series arrangement.

REFERENCES:
patent: 2469921 (1949-05-01), Hoge
patent: 2481482 (1949-09-01), Green
patent: 3036593 (1962-05-01), Saville

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