Systems and methods for monitoring relief valve drain in hot water Heater
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United States of America Patent
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-
Jun 28, 2011
Grant Date -
Jun 3, 2010
app pub date -
Nov 20, 2009
filing date -
Sep 23, 2002
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A system is disclosed that advantageously monitors a status of a relief valve coupled to a water heater or other pressure vessel. By monitoring the relief valve, the system can limit the energy and water wasted resulting from the relief valve's failure. The system can have first and second sensors that monitor a temperature and pressure within the relief valve, and a water flow from the relief valve, respectively. If the temperature or pressure within the relief valve exceeds predetermined thresholds, or a water flow from the relief valve continues for greater than a predetermined interval, the system can restrict a flow of gas, electric current, or water to the water heater.
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