water heater relief valve?
New this spring Keystone Hornet. Got to the CG this afternoon and turned the WH on. About 5 min before it turned off I noticed water dripping from the cover. It was coming from the relief valve. I tr...
Forum Discussion
YamaDooed wrote:
Turn off pump or shut off city water supply off and water heater. Then slow open relief valve and drain out relief valve to establish a air gap in the top of the water heater. Turn water pump and heater back on.
The reason it leaks is because fluids dont compress so when water is heated it expands out the relief valve. Thus the established air gap now compresses and absorbs the water expansion without escaping out the relief valve.
Actual procedure is in the water heater manual.
Thanks for the information. I'll try that. I'm seasonal and turn the water off every time we leave for the week, but I can see how the air gap would slowly get used up.
