Sewer relief valve

Details Sewer relief valve Sewer relief valve

1996-07-08

1997-07-08

Walton, George L.

Fluid handling

Processes

Cleaning, repairing, or assembling

4211, 4219, 4295, 4669, 4DIG7, 137357, E03F 508, F16K 3122, F16K 3300

Patent

active

056450990

ABSTRACT:
A sewer relief valve (40) made out of a durable plastic material comprises: a raised head or float housing (52) that serves as a gripping means during it's removal and installation; said housing (52) has male threads (53) which circumference the lower vertical exterior of said float housing (52); said housing (52) surrounding a central passageway (58) through which a hydrostatic pressure relieving float (54) may pass unobstructed; a cap (50) attached to an upper portion of float (54) effectively sealing said central passageway (58) and cosmetically dressing up said float housing (52) of said sewer relief valve (40) to give it the appearance of a conventional raised head plug (28).

REFERENCES:
patent: 3161206 (1964-12-01), Grundmann
patent: 3603340 (1971-09-01), Rousselet
patent: 3805826 (1974-04-01), Westerhoff
patent: 3815629 (1974-06-01), Oberholtzer
patent: 3852836 (1974-12-01), Oberholtzer
patent: 4114641 (1978-09-01), Robinson et al.
patent: 4261386 (1981-04-01), Young
patent: 4475571 (1984-10-01), Houston, Jr.
patent: 4518005 (1985-05-01), Allewitz
patent: 4747540 (1988-05-01), Meyer
patent: 4850059 (1989-07-01), Dickerson
patent: 5031659 (1991-07-01), Gonzales
patent: 5209257 (1993-05-01), Baker

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