I have a customer that has some water leaks on a 2" copper hot water line. Draining the system will be a long time consuming task. I'd like to use a pipe freeze kit, but have no experience with them.
I've done a little bit of research, and there are a couple of systems out there. One in particular is made by General Wire that uses CO2 and does 1/2" - 2" for about $500. I also see that Ridgid makes one that uses some kind of refrigeration system for $2500.
Anyone have experiences with these or any pipe freeze kits?