Fresh water loss while driving
I know this is an issue with several trailers , and looking to start my spring to-do list... With my ( and many others) trailer , once the fresh water tank is filled , it will run out the overflow to ...
Forum Discussion
Gjac wrote:
To all those that have installed ball valves to prevent siphoning I would caution against this. I Guy I traveled with for a while did this and when we pulled into a FHU CG he forgot to open the valve before he switch his city water valve and the pressure build up in the FW tank caused the tank to swell and it broke the supporting structure. I took a half a days work and a lot of FG repair to fix. I fixed my problem by raising the over flow hose above the tank to break the siphoning effect, It is an easier fix especially if you are older and forget to open the ball valve.
Firsthand experience of what could happen. Thanks.
Once again:
It is not a siphon.
It is a spill.
They are not overflows.
They are vents.
Siphon
Note that a siphon upper tube must dipped into the water, not at the top of the tank. The RV tanks in question have "holes" at the top and water only flows out when the tank leans to that side or the water is sloshed in that direction.
