Sewer relief valve
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United States of America Patent
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May 11, 1993
Grant Date -
N/A
app pub date -
May 4, 1992
filing date -
May 4, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
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.
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