There are two main ways to go about this: One is to drain water from the valves, and the second is to use an air compressor ...

You'll need an air compressor to finish the process of ... Too much pressure could crack the pipes. Close the backflow valve to prevent air from escaping in the opposite direction from the sprinklers.

"What you want to do is hook up the air compressor to the backflow or some type of connection ... the water on and the idea is to open the valves and the valve box and drain out whatever water ...

If you have an air compressor and know the ins and ... “If things freeze, you’re going to get busted pipes, the backflow preventer and the valve manifold are probably the two most important ...

12.So there you have it. A simple DIY setup and turn of the valve can vacate that rusty water that comes out with the drain valve air and keep your compressor running like a champ.

You’ll want to winterize your sprinkler system at least one week before the first “hard freeze,” a term that refers to when the outdoor air ... also have valves to prevent backflow.