Reply To: TP valves

The Tank TP valves Reply To: TP valves


GOOGLE WH Thermal Expansion or the info may be presented here.

If the system has no expansion tank (or is defective), upon a heating event, the heated water expands and having nowhere to go in a closed system, may trip the TPRV (rated to open @ 150PSI). The leak repair may have made the system tighter and now holds pressure better.

As suggested, buy a pressure test gauge and mount it on the laundry sink faucet or WH drain and leave it for twenty-four hours to record all hi-pressure events.

Attached files

Water Heater Rescue

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