Sewer relief valve

Details Sewer relief valve Sewer relief valve

1992-05-04

1993-05-11

Walton, George L.

Fluid handling

With repair, tapping, assembly, or disassembly means

Assembling, disassembling, or removing cartridge type valve

137192, 137202, 137244, 137357, 137433, 13753331, 4211, 4219, 4295, 4669, 4689, 4DIG7, E03F 508, F16K 3122, F16K 3300

Patent

active

052092577

ABSTRACT:
A vent for relieving pressure in a sewage collection system for buildings characterized by a buoyant float-closure which will easily open in response to fluid pressure to permit escape of gas or liquid from the system upon the build-up in the system of minimum pressure in excess of atmospheric pressure. The float closure is mounted in a threaded plug which is adapted to replace the conventional clean-out plug on the exterior of the building.

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: 4475571 (1984-10-01), Houston, Jr. et al.
patent: 4850059 (1989-07-01), Dickerson
patent: 5031659 (1991-07-01), Gonzales et al.

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