Yahoo Message Number: 6251 (http://groups.yahoo.com/neo/groups/Country-Coach-Owners/conversations/messages/6251)
Jan, you don't mention how you were filling the tank,i.e. directly through the fill hole or through the valve used when connected to a water source. If it is the latter I'd almost bet it has nothing to do with the valve itself, rather it is a bad pump allowing backflow to the tank. I had this happen with a 2000 Intrigue and an 03 Allure , and it was cured by replacing the pump.
Walt Rothermel
03Allure30811