What am I looking at
We had a toilet overflow issue last time out (I'm sure I'll be asking about that more specifically later...) and while my wife was cleaning out the bathroom I noticed the water she was washing down the floor drain was draining strait out. I'd assumed the floor drain went to the black water tank since it's right there.
I looked under and saw this set up. Can someone tell me what this is supposed to do. Tye round part had came loose and that's where water was dragging out but after I snapped it into place it obviously just drained out the end of the pipe. Is that supposed to go somewhere or is this how it normally comes and then of course what's the point of it?
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