Winterizing a sprinkler involves shutting off the supply, draining strains

https://judahsrrx184.inkharbory.com/posts/prolonging-system-life-advanced-lawn-sprinkler-upkeep-finest-practices

Winterizing a sprinkler includes shutting off the grant, draining traces, and blowing out last water with compressed air to stop frozen pipes, cracked valves, and costly spring upkeep.