Having a check valve at the cold inlet to the heater also prevents mineral deposits and residue from backing into the cold system from inside the water heater.
Rv hot water heater check valve replacement.
If you do know have your new rv water heater anode on hand before starting.
How to replace rv water heater check valve the first step to replacing the check valve is to turn off the water supply and drain your water heater.
You may need to remove a cover to access it.
Cold water comes in at the bottom and hot water comes out of the top of the heater.
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This is a good time to read how to replace your water heater anode and why if you don t already know.
If your rv has a bypass valve these two pipes will be connected directly to each other using a third pipe.