My lawn sprinkler pressure vacuum breaker cracked over winter so I'm trying to replace it.
There are threaded part's of piping and what seems like welded parts.
All of the piping is metal and no matter how long I hold a torch to the fittings that seem welded they just won't come apart, or even budge.
I've never worked with piping before and my research shows people holding a torch to the welded areas and then being able to pull the piping apart (using quite a bit of force).
Is it possible it's not welded and I need to take a different approach? Do I need to just cut the lines and replace them?
EDIT: Here's a pic, the main fitting I'm working on is the bottom one headed into the house that has the adapter between pipe sizes.