Backwater valve

Details Backwater valve Backwater valve

1994-06-10

1995-04-18

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

137409, 137418, F16K 3118, F16K 3300, F16K 4300

Patent

active

054069726

ABSTRACT:
A backwater valve is described which includes a liquid retaining body having a top, a bottom, a first end, a second end, opposed sides and an inner chamber. A first flow conduit extends through one of the top of the body and the first end adjacent the top of the body and protrudes into the inner chamber. A second flow conduit extends from the inner chamber through the second end adjacent the bottom of the body and protrudes past the second end. An annular seal is positioned on an annular peripheral edge of the first flow conduit which protrudes into the inner chamber. A plate is pivotally mounted to the body. The plate having a wear resistant lubricious first face, a second face, a first end and a second end. The first end underlies the first flow conduit. The first face extends past the first flow conduit thereby serving as a spillway for liquids flowing through the first flow conduit. The plate is pivotally movable between a closed position and an open position. In the open position the first face engages the annular seal. In the open position the first face is spaced from the annular seal. The plate is maintained in a normally open position by force of gravity. A float is secured to the second face of the plate such that the plate floats into the closed position when the inner chamber is filled with liquid.

REFERENCES:
patent: 194676 (1877-08-01), Hansen
patent: 199696 (1878-01-01), Dikeman
patent: 289108 (1883-11-01), Johnson
patent: 1205199 (1916-11-01), Healy
patent: 1584666 (1926-05-01), Shockley
patent: 1606396 (1926-11-01), Blom
patent: 1861397 (1932-03-01), Khun
patent: 1864443 (1932-06-01), Khun
patent: 1924498 (1933-08-01), House
patent: 2638178 (1953-05-01), McRill
patent: 2695072 (1954-11-01), Hauslein
patent: 2928410 (1960-03-01), Vecchio
patent: 3176707 (1965-04-01), Wilson
patent: 3626521 (1971-12-01), Delco
patent: 3781920 (1974-01-01), Browne et al.
patent: 3974654 (1976-08-01), Mirto, Jr.
patent: 4324506 (1982-04-01), Steinke
patent: 4503881 (1985-03-01), Vecchio
patent: 4787103 (1988-11-01), Endo
patent: 5234018 (1993-08-01), Grachal et al.

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