If your sprinklers are not working and your Backflow device looks like this, you have just found your first problem. This is how you would winterize your sprinklers if you do not know where your isolation valve is located and you can’t shut off your supply to the irrigation system. You will still need to open the test cocks on the right side of the backflow device with a flat head screwdriver to drain out the water. This is the best way to protect your backflow device (if you don’t know where your shut off valve is)!Bookmark the permalink.
| Published November 3, 2013 | Full size is 717 × 960 pixels