City water gets into fresh water tank
When I hook up city water to my travel trailer the fresh water tank slowly fills up. It will fill to overflowing in about two days. Is the water going through the water pump to fill up the fresh water...
Forum Discussion
See you are from TX which has 'hard water'
Calcium and other minerals can build up on the water pump 'internal' check valve which is a one way diaphragm.
Diaphragm gets held open and water from city connection flows back thru pump into fresh water tank.
Shutting off city water supply and using pump and fresh water tank can help flush the pump internals.
After using up whole tank..go back on city water supply.
If still leaking back thru pump you can disassemble pump and clean diaphragms
OR
You can buy/install an in-line check valve in pump 'suction' line and stop the backflow
Shurflo inline check valve
Calcium and other minerals can build up on the water pump 'internal' check valve which is a one way diaphragm.
Diaphragm gets held open and water from city connection flows back thru pump into fresh water tank.
Shutting off city water supply and using pump and fresh water tank can help flush the pump internals.
After using up whole tank..go back on city water supply.
If still leaking back thru pump you can disassemble pump and clean diaphragms
OR
You can buy/install an in-line check valve in pump 'suction' line and stop the backflow
Shurflo inline check valve
