Winterizing Your Irrigation System
It is recommended that Steeplechase perform this "Winterization" of your sprinkler system in NJ. The blow out method utilizes an air compressor with a Cubic Foot per Minute (CFM) rating of 80-100 for any mainline of 2" or less. The compressor is attached to the mainline via a quick coupler, hose bib or other type connection, which is located before the backflow device.
Each station/zone will be activated starting from the furthest station/zone from the compressor slowly working your way to the closest station/zone to the compressor. Each station/zone should be active until no water can be seen exiting the heads. This should take approximately two to four minutes per station/zone.