Gravity Fill for Freshwater Tank

Each time I have tried to use this it seems I get backflow out the fill almost equal to the amount going in.  Slowing down to a very small flow does not help much.   Also, have one of the "custom" feeders with clear hose and shutoff supplies by PC, does help much.  Anyone else experience this.  It seems there is not enough down angle to tank, since water does not flow uphill.

I have to remove the little screen on the vent hole to stop the same thing that is happening to you. It seems to restrict the air being displaced in the tank from venting. Or you could have a plugged or kinked vent line that is not allowing the air to escape.

I had the same problem filling the  water tank.  After much experimenting with flow rates,  I also discovered that the screen on the vent seemed to be obstructed,  because when I
scraped it with my fingernail it started releasing trapped air.    Now I scrape it every time I fill to keep it "breathing".    No more problems.

Another thing to try is get a thin 1/2" garden hose and cut off all but the last two feet.  Add that to your typical fresh water hose and stuff it down inside the hole so the end of the hose is inside the tank itself.  The air in the tank will find it's way out both the vent and the filler hole.

This is what I have used for 15 years and never had a problem fill the fresh water: https://www.amazon.com/Secure-Fill-SNL1SF-Fresh-Water-Fill/dp/B001FC7G2M

Jim

When we got our 2350 we experienced the same slow fill problem.  I checked the hose going from the fill to the tank and the air relief hose from the tank back up to the fill.  It is a piece of small clear tubing ( 1/2 inch as I recall) on our PC.   It was cut about two inches too short and thus had a kink in it that restricted the relief of the air.   That two inch savings of hose cost me having to remove the corner bed and the underlying support panels, a trip to HD for a few feet of the same hose and then reinstalling it.   I think the hose was 20 cents a foot or something like that and is just another example of how carelessness during construction can cause a real problem for the owner. 

Another method to use is to take the gadget in Ron's link (above) and tape a little length of 1/4 inch tubing (like you use for drip irrigation) to the filler tube on Ron's gadget.  Make it a little longer than the tubing on the gadget and thus any air that accumulates in the fill hose going to the tank can be evacuated. 

By the way, this fill problem has been a problem for me on three different rigs by three different manufacturers over the years.  It seems so simple to design and install correctly.  Like stated in a post above, water doesn't flow up hill on its own accord.  Of course, I can say that not being an engineer !!

Paul

This is what I have used for 15 years and never had a problem fill the fresh water: https://www.amazon.com/Secure-Fill-SNL1SF-Fresh-Water-Fill/dp/B001FC7G2M

Jim

Yes, that would be the official version!

Correction.......it was Jim not Ron that posted the filler link.   Like Jim, I have also used these for a long time.  I might add that I always put the end of the tubing on a new one into the fire on the stove top for a few quick seconds to sort of round off the edges to make sure it absolutely will slide down into the fill hose and not nick it.  Probably overkill, but an ounce of prevention......or something like that.

Paul

It sure does sound like sailer35's filler tube and/or the vent tube is collapsed, not allowing an adequate flow of fresh water inside and/or tank-air to escape.  If not up to the task of inspecting the two tubes, extending a semi-stiff filler hose into the tank itself should provide an alternate solution.