All I know is what the manufacturer said about unexpected resistance to changing building codes, and the blatant make-work compromise they ended up with: https

All I know is what the manufacturer said about unexpected resistance to changing building codes, and the blatant make-work compromise they ended up with: https://reason.com/blog/2010/06/24/plumbers-unions-vs-waterless-u/amp https://reason.com/blog/2010/06/24/plumbers-unions-vs-waterl...