smkettner wrote:
Get a small expansion tank after you replace the valve.
http://www.amazon.com/SHURflo-182-200-Pre-Pressurized-Accumulator-Tank
IMO every RV should have one.
Expansion tank is the way to go. In an RV you have a check valve on your fresh water line coming in so it creates a closed loop on the side your water heater is on. You are building excess pressure where in a stick house you have room for it to go to but in an RV it is a much shorter run. I added an expansion tank on mine and it cured the same problem your having.
