Fresh water holding tanks

[Jim Bliss]

I have a 2019 momentum G-class toy hauler. Does anyone else have problems with the vent tubes on the fresh water tanks siphoning out after filling up? Dealership says this was a issue on the Fifth wheels and they put a loop in a line between the 2 tanks and it solved it. Was told they did this to mine but didn't solve the problem. Dealership in my area are not the most energetic group of people. Love the camper but this problem defeats the purpose of off grid camping.

[WhittleBurner]

Common problem, if you search you'll find a few ways people have found as a solution to the siphoning.
Also welcome to the forum!

[DaveMatthewsBand]

I have a 2019 momentum G-class toy hauler. Does anyone else have problems with the vent tubes on the fresh water tanks siphoning out after filling up? Dealership says this was a issue on the Fifth wheels and they put a loop in a line between the 2 tanks and it solved it. Was told they did this to mine but didn't solve the problem. Dealership in my area are not the most energetic group of people. Love the camper but this problem defeats the purpose of off grid camping.

Many threads on this topic.


Do a search for “Sharkbite”.


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