Steve___CO
New Member
Hello! I have a dual sink with an extra drain pipe that I am wondering if I can just get rid of. To summarize what is in the pictures, there is a garbage disposal on the right side of the sink, and in the first picture you see the white vertical pipe in the middle which is coming down from the left sink, and the garbage disposal output connecting to the tee. The two horizontal drain pipes go to the cabinet on the left, where they connect and go down to the basement and up to the roof vent.
My question is - what is this black vertical pipe on the left? It goes to the top of the cabinet and is open at the top. It used to have the dishwasher drain running in to the top of it. When I installed a new garbage disposal I connected an air gap and ran the dishwasher drain to that, and then out to the garbage disposal.
I guess my real question is, can I just cut this thing off and put a cap on it? It seems useless now that I have the dishwasher draining elsewhere. It also seems odd that it is completely open at the top, but since there is a trap I assume that is OK.
Thanks for your help and advice.
Steve