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Mike_E_'s avatar
Mike_E_
Explorer II
Dec 17, 2018

HW tank valves leak after de-winterizing....then stop?

Hey there, Had an interesting thing happen this weekend. Went out to the trailer for the weekend and had to de-winterize it to use. Hooked up water, opened all taps inside to flush all the pink...
jplante4's avatar
jplante4
Explorer II
Dec 17, 2018
Burping the water heater with the PT valve removes the air bubble that acts as an expansion tank. You should re-establish the air bubble by isolating the tank and draining some water out with the PT valve open.

If the tank is solid with water, the PT valve will lift every time the burner kicks on.

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