I would like to put a utility sink in my basement. I have a 3" pipe stem, which is also a drain clean out, about 7' from where I want to put the sink. The pipe stem sticks up about 3' above the slab.
Can I cut the 3" pipe stem a few inches away from the slab and install a 3" - 2" wye and then run a 2" drain the 7' to where I want to put the sink? Also, what about venting? I live in Virginia and the house is only 2 years old and is built to code, so shouldn't the main drain already be vented properly?
Thanks in advance,