@puffdaddy

Got it on the hose nozzle end. I'm not sure why there would be any pressure in filling the fresh water tank as the tank has an overflow on it. The check valve on the City Water input can be bypassed by removing the conical screen and putting it back in the opposite direction. I would think that this would allow your Magiver setup to work. Never the less it still takes quite a while to fill the 60 gallon tank because the piping in the RV is limited by the 1/2" size PEX and fittings.