We made a reno in our basement. The basement originally had 2 bathrooms, but since only 1 is needed (and typical), I gutted the one bathroom and we are converting it into a mudroom. I already removed the vanity and toilet, and temporarily put a plug on the toilet drain. Where the toilet originally was is where we want a small laundry style vanity and sink - I already ran a hot water line to this area, and obviously already have the cold water (from the old toilet). My question is whether I can use the toilet drain for my new sink drain? Is there a common adapter at hardware stores for this (ie. some type of 4" plug that has the typical 2" adapter for a sink drain? Also, should I be concerned about smell, or back pressure up into the sink? Lastly, would I just plumb it all up, or will I need one of those separate pressure valves on the sink line (to help it drain down).
Thanks
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