I want to put a vacuum relief valve or vacuum breaker in my solar (plumbing details on other post) but I am having trouble finding them here in Canada and the pool stores are full of terrible advice!
1. Can I put a T into the system and cap it somehow as a "rough-in" for this valve once I find one?
2. Can anyone recommend what valve to get and where to get one online? I am running all 1.5" piping.