This is in regards to the fresh water tank fill. -Not the city water hook up I have no problem filling the tank by holding a hose to it, but it is impossible to pour water in via a funnel. I even bought a funnel with a tube attached and had the tube way in, but the water just pours back out. The pressure relief valve is not clogged. Is it that I need some pressure behind it ?Can any one suggest any gravity method that has worked for you other then with a hoseJack L

Need to check the 'routing' of the filler hose.If it sags then water will back up when just pouring water in but can flow when using a hoseAn your fresh water tank doesn't have a 'pressure relief valve'.........just a vent line that also needs to be straight, no kinks, no sags and higher than top of tank. Size of vent line will determine how fast you can gravity fill if filler hose doesn't have room to vent escaping air also.(PRV's are on water heater)

Add a 6 inch piece of hose to the funnel to get past the neck of the fill spout.I had to add one to my drinking water hose because the metal "male" end wouldn't go into the filler neck.Good Luck, Mike

When you stuff the funnel in, it seals around the opening and then you fill the funnel with water and it can't get thru the funnel hole because no air can escape past the funnel neck.You have to leave a gap where the funnel neck goes in the fill hole so the pressure is equal. Then it'll go in as fast as the funnel will allow.Good luck!Mitch

Sounds like the air vent for your fill is obstructed. If you cannot easily clear it, get a smaller tube which leaves lots of space around it for air to vent past.I use a funnel with a tube of about 1/2" ID about a foot long. I still occasionally need to burp the tank while filling.Wayne

Mine has a vent separate from the fill opening. When I fill with a hose I attach a plastic tubing to the hose long enough to reach into the tank, several feet long. The same thing would work with a funnel. Make it even longer so you can raise the funnel well above the opening to develop some pressure.

Travel trailer fresh water fill question | Good Sam Community

Empty_Nest__Soo
Explorer
Mar 22, 2014
Sounds like the air vent for your fill is obstructed. If you cannot easily clear it, get a smaller tube which leaves lots of space around it for air to vent past.

I use a funnel with a tube of about 1/2" ID about a foot long. I still occasionally need to burp the tank while filling.

Wayne
MitchF150
Explorer III
Mar 22, 2014
When you stuff the funnel in, it seals around the opening and then you fill the funnel with water and it can't get thru the funnel hole because no air can escape past the funnel neck.

You have to leave a gap where the funnel neck goes in the fill hole so the pressure is equal. Then it'll go in as fast as the funnel will allow.

Good luck!

Mitch
popeyemth
Explorer
Mar 22, 2014
Add a 6 inch piece of hose to the funnel to get past the neck of the fill spout.
I had to add one to my drinking water hose because the metal "male" end wouldn't go into the filler neck.
Good Luck, Mike
Old-Biscuit
Explorer III
Mar 22, 2014
Need to check the 'routing' of the filler hose.
If it sags then water will back up when just pouring water in but can flow when using a hose

An your fresh water tank doesn't have a 'pressure relief valve'.........just a vent line that also needs to be straight, no kinks, no sags and higher than top of tank. Size of vent line will determine how fast you can gravity fill if filler hose doesn't have room to vent escaping air also.

(PRV's are on water heater)

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Travel trailer fresh water fill question

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