Water heater backflow preventer valve failuer
My last trip included a failure of the back-flow preventer valve mounted to the hot water outlet of my water heater. The primary symptom was a clunking sound followed by the hot water flow stopping. ...
Forum Discussion
my advice, remove the backflow preventer, it's part of the cheaper water heater bypass with only one quarter turn valve. remove the valve, install the two valve water heater bypass.
the check valve really isn't needed for anything else.
Why remove it?
well, the check valve flow is nonlinear with pressure, so what we, and others have found, is that when you get the water temp right for say a shower, then turn the flow down, water temp changes, usually cold.
The RV dealer we bought our trailer from says they have more trouble with the check valves than anything on the water heater.
the check valve really isn't needed for anything else.
Why remove it?
well, the check valve flow is nonlinear with pressure, so what we, and others have found, is that when you get the water temp right for say a shower, then turn the flow down, water temp changes, usually cold.
The RV dealer we bought our trailer from says they have more trouble with the check valves than anything on the water heater.
