fresh water overflow

vizslaguy

Hi We have a 2019 BDL. Have used it 6 times and connected to city water and shore power with no problem. I have a brass water pressure device set at 42 psi.  The last trip we returned after a few hours and noticed water flowing out of the fresh water fill port. I understand that there is a check valve located somewhere in the trailer connecting the two systems.  I  shut off the city water and drained the fresh water tank.  Turned on the city water and the fresh water tank began to fill again.  Any one else have this issue and where is the check valve located?  Thank you 

Sharon_is_SAM

The check valve is in the pump.  See link.  Be careful not to run your pump while the system is pressurized with city water as it can damage the pump.  Also, you may want to consider turning off the water supply before departing.  May prevent flooding down the road.

https://tab-rv.vanillacommunity.com/discussion/7451/city-water-fresh-water-tank-cross-connect

vizslaguy

Thank so much for the info