Black vent with hoses behind the shower stall

[timsos]

I have a leak in my 312bhts, seems like it has been dripping for a while. After I investigated I found it to be coming from a black vent with a hose in and out behind the shower stall. I accessed this through the shower water valves panel. These hoses go straight up and down to the under belly. Does anyone know what this is to and what it is for?

[Bungy]

It is the vacuum break for the black tank flush

[timsos]

Any idea on why it would have constant fresh water pressure on one side of it?

[Bungy]

No idea, unless you have a hose connected to the flush inlet

[timsos]

No hose connected, that would blow up the black tank eventually wouldn’t it if there was a constant water source going into the tank, it seems like something would give on the toilet first. Would definitely know soon as I flushed the toilet.

[Bungy]

That’s true... could be a plumbing screw up. Is the trailer new?

[timsos]

That is probably it, I’ll try to find a diagram for this panel, thank you.

[Bungy]

I had to modify my previous post, the flush lines don’t go thru the Nautilus, at least they don’t on mine