Forum Discussion

bondj007's avatar
bondj007
Explorer
May 02, 2016

Help! Water pump pressurizing when using hot water tank.

Decided to be a little proactive and replace my water pump. After install of my SHurflo 4008 I determined that my check valve on the hw tank needed replacing. That statement is simplifying 2 hours o...
Chris_Bryant's avatar
Chris_Bryant
Explorer II
May 03, 2016
The water heater acts as an accumulator in the system, whether you run the hot water or not. It is working the way it is supposed to- if there were no air cushion, the system pressure would rise enough to trip the PTR valve on the water heater every time you heated water.

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