Starting up your sprinkler system in the spring How To Turn On An Underground Sprinkler System
Blowing out the sprinkler lines. The valve box is easier than going to every line. How to Install In-Ground Sprinklers | This Old House Turning on the Sprinkler System After Winter · Step 1: Check if the Ground Has Thawed · Step 2: Turn the Vacuum Breaker Valves Off and the Solenoid Valves On ...