Originally Posted by DKB_SATX
I have to plug the city-water inlet to use my water pump as well. I have a quick-disconnect on it, and I have a gate valve on a quick-disconnect that I put on instead of the fitting that's on the trailer end of my freshwater hose.
The "right way" of course is to fix the check valve... someday.
Airstream uses 2 water check valves.
One is to keep the city water pressure off the valves that are in the water pump.
The second one, that's always near the city water inlet, is to block any water flow out of the city water hookup, when using the water pump.
A temporary fix when water flows out of the city water hose hookup, is to install a plug where the water hose hooks up.
Of course, that plug should always be in place anyway, when the water hose is not being used.
That keeps dirt and bugs out of that hookup.