Download Printable Winterization Instructions
Turn Off Sprinkler System
Turn off main valve to irrigation system (usually located underground in a box by the back flow device or water meter).
Next, open the drain valve.
Locate Your Back Flow Device
Depending on type of back flow prevention device, it will either be above ground 12-36″ or in a box below ground. Your back flow device will look like one of the pictures below.
Open The Test Ports
If there are brass plugs or caps on your test ports, remove them first. NOTE: When replacing the caps do not over-tighten, they are there just to keep dirt out. Using a screwdriver, open the test ports from the Closed/Summer position (parallel) to Open/Winter position (perpendicular or at a 45 degree angle). There may be 1-4 test ports on your particular device.
Note: These will keep turning, but only need to be turned 1/4 turn, to 45 degrees.
Turn the Shut Off Valves 45 Degrees
The Shut Off Valve Handles should move from being parallel to the pipe (Summer Time/On Position) to a 45 degree angle (Winter Time/Off Position) as demonstrated by the black lines in the images below. IMPORTANT! Turning these valves to 90 degrees will trap water in the valve which could result in damage during freezing temperatures.
Need Expert Help?
Call EUGENE SPRINKLER SERVICE! 541-204-1995 or fill out the Service Request Form Online
Remember the Department of Health requires you to test your Back Flow Prevention Device every year! Your water purveyor may discontinue service if you are found in violation of this code. We offer BACKFLOW TESTING for $50 during other service appointments.
For more information visit EWEB’s Backflow Prevention, SUB Backflow Prevention and Rainbow Water District information pages.