Winterizing a sprinkler contains shutting off the delivery, draining traces
https://holdenduog620.theburnward.com/preventative-lawn-sprinkler-maintenance-that-conserves-water-and-money
Winterizing a sprinkler includes shutting off the give, draining strains, and blowing out remaining water with compressed air to save you frozen pipes, cracked valves, and highly-priced spring repairs.