Fresh water tank coming out hoses below

[Jeremym]

I bought a 2019 jayco jayflight six and it has the 80 gallon water tank but when I fill it up and then drive to the campgrounds it drains out the bottom the whole way to the campgrounds i have lost a boat 20 gallons of water, they say you can't block them off cause they are breather tubes and tanks could blow if blocked, anybody done anything with these. Input please.

[CAG]

This is a common topic and you can find more info using the "search" feature at the top of the page but the general solution to this is valves on the overflow lines coming out from the tank. Once those are install be sure they are open when filling and closed when full. If you fail to open them and try to fill the tank you will likely over expand the tank, causing leaks or damage.


From the search feature:https://www.jaycoowners.com/forums/f...ube-84840.html

[JimD]

Here is a link to a thread on this subject.

https://www.jaycoowners.com/forums/f...ter-90370.html

[Jagiven]

This is a common issue. There are lots and lots of posts on the subject. There are a number of ways to address this issue. For me, I could locate the vent tube inside my tt. I had enough slack, to pull the hose up, so the hose end was only an inch below the underbelly. On the inside of the tt, I was able to secure the vent hose to the cabinet frame, so it could not slip down (had that issue the 1st time around). The elevated loop fixed the issue for me. Others, who have multiple vent tunes, combined into a large diameter manifold, then broke them back off into the reg size tube, having one vent pipe off the top of the manifold, this breaks the vacuum. Curing the siphoning affect.

Others add sharkbite valves to the end of the vent lines. But as you have heard, if you forget to open the valves, you can damage the tank.