Ok. Just when I thought I knew just about every thing there was to know about an RV, I found something new. My camper is equipped with a black tank flush like a lot of campers. Like most people, I don't use it very often. Usually there is a line at the pump out or I'm just in a hurry and don't bother with it. I do a pretty intense flush when I winterize.
As anyone that has camped for more than 10 minutes knows that there is an unpleasant smell that can come from the black tank when you flush (especially if you have the super fan running and pulling the gases up).
This weekend I'm camping with a sewer hookup for the first time so I took the opportunity to give it a good flush. I ran the toilet until tank was nearly full, drained it and then I turned on the black tank flush. Since I'm camping with water and sewer, I was just going to let it run for hours and I have the drain open
Well, I noticed water dripping from under the camper. After a little research it would appear that the black tank flush hose comes up under the bathroom sink, 90s into a fitting and then goes back down through the floor to the tank. What the hell is this fitting for?
Only thing I can think is that it's some type of vent but I'm not sure. Luckily it only drips when the flush in going and about 95% of the water ran straight back down the water hoses and then dripped into the plastic tray in my basement so there wasn't much mess or damage.
What the hell is this??