Winterizing a sprinkler comes to shutting off the grant, draining lines
https://telegra.ph/Fixing-Low-Stress-and-Uneven-Coverage-in-Lawn-Sprinkler-Equipments-07-11
Winterizing a sprinkler involves shutting off the delivery, draining traces, and blowing out remaining water with compressed air to avoid frozen pipes, cracked valves, and high priced spring maintenance.