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.
Rv water pump check valve leaking.
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.
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.
The first thing to do is check for a broken check valve.
I was losing 3.
These water pump problems are just a few of the usual issues people have with the water system in their rvs.
Conclusion on water pump troubleshooting.
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Pump it up with rv fresh water pumps.
Rv water pump leaking.
Install a new check valve and make sure the arrow is pointing at the freshwater tank.
This is usually on a tube hose connecting the water pump to the freshwater tank.
After 2 failed attempts to keep the fresh water in my rv tank from spilling on the ground i installed a check valve to see if this will work.
Go whole hog and replace the pump itself.
The valve is meant to prevent city water from leaking into the fresh water tank.
Add your own 1 way check valve to the water line on the inlet side of the pump.
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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.
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.
For those just entering the rv lifestyle there is a check valve behind your city water hook up.
The problem was a bad check valve on the water pump.