Originally Posted by Linctex
Originally Posted by tbm5690
Are you saying that's where you are supposed to hook up the compressor hose?
Typically.
In areas that experience hard frost below the surface, you have to blow all the water out of the lines before they freeze solid.
Yep I get that, my system gets blown out every fall but I've got a valve in-ground located nowhere near the vacuum breaker that is used for the compressor input, and it's huge. I've never seen a small cap-style like this so close to the breaker.