I would like to restart a question by plumbob from a month ago. I'm also remodeling the kitchen and the new, undermount sink drain is much lower than the existing sink drain. In fact, the drains will be even with the existing wall drain, so from the prior thread "major surgery" is called for. I've got the cabinets off the wall, anyway, so I expect to find two 1 1/2" branches leading to sanitary T's at the vertical drain. The plumbing is all PVC and about 20 years old. My question is, how do you cut new fittings into an existing, vertical DWV line? Are there "slip" style couplings I can get, or do I need to use the neoprene couplers with pipe clamps? BTW, I've got an engineering background and have done some serious "plumbing" in chemical plants, as well as a large number of home improvement projects, BUT... I want to get this right or have someone do it for me (unfortunately, my calls to the tradespeople around here are rarely returned--way too much business and way to few suppliers!). I'll appreciate any and all advice.
Frank
Frank