I'm about to start cutting everything out and redoing all my plumbing. But I had a question, I was planning on cutting out the valves because i'm replacing my 1 1/2" plumbing with 2". I have two 1 1/2" suction lines and two 1 1/2" return lines that I can't change that are going into these valves. Instead of cutting the valves out could I just cut the single end of 1 1/2" flush with the valve and then put the two inch pipe over it? Since the valve works with both?
I attached a pic of what i'm talking about.