Sewer relief valve

Details Sewer relief valve Sewer relief valve

1978-07-27

1981-04-14

Nilson, Robert G.

Fluid handling

Line condition change responsive valves

Fluid opened valve requiring reset

4211, 137236R, 137356, 137528, 137800, 220358, 220375, F16K 100

Patent

active

042613868

ABSTRACT:
A sewer relief valve for placement in an existing sewer line connecting a residence or other facility generating sewage and the sewage collection system, the valve comprising connection means adapted to connect into a sewer line, an adapter means in turn operably attached to the connection means, and a cap means attached in air-tight and water-tight fashion to the adapter means, the adapter means also having O-ring sealing means whereby backing up sewage and water interiorly to the sewer pipe will forcibly eject the cap means and permit exterior ground flooding rather than flooding interiorly to the residence or other sewage generating facility.

REFERENCES:
patent: 957487 (1910-05-01), Berry
patent: 1173422 (1916-02-01), Grannis
patent: 2798504 (1957-07-01), Gast
patent: 3064739 (1962-11-01), Hanson
patent: 3805826 (1974-04-01), Westerhoff
patent: 3815629 (1974-06-01), Oberholtzer
patent: 3852836 (1974-12-01), Oberholtzer
patent: 3895466 (1975-07-01), Melton

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