Check valve assembly having valve opening prior to passing flow

Details Check valve assembly having valve opening prior to passing flow Check valve assembly having valve opening prior to passing flow

1979-08-20

1981-01-13

Weakley, Harold W.

Fluid handling

Systems

Sequentially progressive opening or closing of plural valves

137508, 137629, 13761411, 251210, F16K 3112

Patent

active

042443989

ABSTRACT:
A check valve assembly which when opening has a valve closure which is lifted from its seat before fluid flows past the unseated closure, and which when closing terminates flow in advance of the closure reengaging its seat.

REFERENCES:
patent: 1331720 (1920-02-01), Paterson
patent: 1681597 (1928-08-01), Sanford
patent: 3589398 (1971-06-01), Haach

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