Differential pressure-actuated valve with clean bias chamber

Details Differential pressure-actuated valve with clean bias chamber Differential pressure-actuated valve with clean bias chamber

1984-03-09

1986-06-24

Walton, G. L.

Fluid handling

Liquid level responsive or maintaining systems

By float controlled valve

92244, 137436, 137437, 137444, 2103232, 210390, 251 43, 277 63, F16K 31122, F16K 3134, F16K 3126, F16K 3300

Patent

active

045962693

ABSTRACT:
A differential pressure-actuated valve with a piston slidable to open or to close an inlet port. The piston slides in a cylindrical wall, and separates a bias chamber and a flow chamber. The piston is fitted with two oppositely-directed lip seals, one of which seals against bias chamber pressure, and the other of which scrapes particulate matter off of the wall. Optionally, an elongated filter extends from the piston into an inlet pipe where it filters water which flows to the bias chamber. The filter may have a perforated mesh wall, or a solid wall with an open end.

REFERENCES:
patent: 2531672 (1950-11-01), Daye
patent: 2599498 (1952-06-01), Suska
patent: 2654482 (1953-10-01), Robinson et al.
patent: 2690939 (1954-10-01), Whaley
patent: 3131611 (1964-05-01), McLaughlin
patent: 3182569 (1965-05-01), Hieber
patent: 3443485 (1969-05-01), Van Dranen
patent: 3618629 (1971-11-01), Heyer et al.
patent: 3893475 (1975-07-01), Hudson
patent: 4013091 (1977-03-01), Hudson

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