Originally Posted by
Michael Thomas
Not a material common in my area, any issues when you "mix-and-match" like this?
Not an issue with mixing different materials, but that drain installed with that tee like it is, the disposer is going to try to pump water back up into the sink before it ever thinks of going down, and, water from the sink, if drained rapidly, could readily back up into the disposer before it goes down the bottom leg of the tee.
That tee should have been installed with the inlet/outlet on the vertical, with the disposer (or the sink) entering on the side inlet.