If after you complete your tasks and turn off the water and the pump continues to run and run your rv water pump is likely leaking somewhere.
Rv water pump check valve leaking.
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The valve is meant to prevent city water from leaking into the fresh water tank.
Go whole hog and replace the pump itself.
The problem was a bad check valve on the water pump.
Install a new check valve and make sure the arrow is pointing at the freshwater tank.
These water pump problems are just a few of the usual issues people have with the water system in their rvs.
The valve is designed to let pressured city water enter the rv s plumbing system when hooked to a charged hose bib via your water hose in an rv park and prevent the water pump from pumping water out of your potable water tank onto the ground when not hooked to a charged hose bib.
Conclusion on water pump troubleshooting.
Check out camping world for all your options.
Check amazon or rv water filter store for options.
For those just entering the rv lifestyle there is a check valve behind your city water hook up.
Check for a rebuild kit for the water pump and find out if the internal check valve is a user serviceable part some art some are not.
Other issues include loud pump noises and vibration a leaking water pump the pump fails to shut off inadequate water pressure or flow the pump won t prime the water flow sputters and more.
Add your own 1 way check valve to the water line on the inlet side of the pump.
When this little known part fails it allows water to flow backward through the pump into the freshwater tank anytime you re hooked up to city water.
Pump it up with rv fresh water pumps.
Rv water pump leaking.
I was losing 3.
Rv water pumps should turn on every time you flush the toilet or turn on a faucet.
The first thing to do is check for a broken check valve.