Gravity Water Fill

I have a Coachmen as well, and wanted to be able to fill my tank from some 5 gallon jugs. I thought I could just hook up a short hose and use a funnel to fill it through the freshwater fill, but there's a backflow prevention valve or something there that prevents it from filling unless the water is under pressure.

So I bought an RV freshwater pump, attached hose fittings and wired it to my batteries, and used that to pump water from the bottles into the freshwater tank. I keep the pump around as a spare in case the one in the RV fails.


If the hose you're filling from has good pressure, you might be able to use something like a water bandit to slip over the water source hose.

I think he needs a "Water thief".

https://www.amazon.com/Camco-Connects-Standard-Various-Sources/dp/B000EDOSKG/ref=sr_1_1?crid=3L6G2U4160R8N&dchild=1&keywords=water+thief+faucet+adapter&qid=1600194863&sprefix=water+thief%2Caps%2C288&sr=8-1

I assume you looked around on the exterior and didn't find a fill hole?

If you don't: You could stop by the hardware store and pick up a garden hose end fitting. It would only take a minute or two to put it on, fill up and then 30 seconds to pull it off. Just have the fitting and a screwdriver handy by the front seat when you pull in.

The manufacturer did you a big favor by not putting a gravity fill on your mode. It "saved" you $7.29 or so! It's a good example of how they scimp and delete things we take for granted.