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rjniles's avatar
rjniles
Explorer
Oct 04, 2020

Water tank filling mod

A modification I made to more easily fill my fresh water tank. I installed a 1/2" threaded 3 way ball valve in the area of my water pump. I connected the input to the valve to the outside hose connection. One of the output ports I connected back to the water pump, the other output port I connected to the old breather hose to the fresh water tank. I cut a hole in the bulkhead wall of my front storage box to access the valve handle. The old filler hose now acts as the breather hose and I can still fill the tank with that hose.

With a hose connected to the RV, I reach the valve thru the storage box and turn to the fill position. It will fill my tank in 4-5 minutes (will depend on water pressure).

I used PEX pipe with SS cinch rings for the connections(I own the tools and connectors). You could also SS 1'2" FPT faucet connectors.

Trying to figure out how to post a picture.
  • My TT’s gravity fill works fine and I’m not in a hurry.
  • bukhrn's avatar
    bukhrn
    Explorer III
    Lately I've been seeing quite a few posts about mods & different ways to fill the fresh water tanks, some, Like this one seem to be a lot of work, makes me wonder, do I have the only MH with a gravity fill port, remove the cap, stick the hose in the hole, turn the water on?
    I have a friend with what appears to be 2 city water connections, but one of them is to fill the tank.
    I thought all RV's came with a way to fill the tank. :h
  • I’m nervous about filling fresh water quickly and look forward to your pictures.
  • rjniles wrote:
    Trying to figure out how to post a picture.


    Follow the instructions In This Link to fully understand how it is done,very easy to use.

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