Many irrigation systems have pressurized lines, meaning there is constant water in the lines.  The top part, or the brass part, is most vulnerable to freezes since it is where water goes through and where water actually sits. To prepare you irrigation system for freezing temperatures, follow the steps below: Locate the backflow of your irrigation system.  Most residential backflow devices have two shut-off valves. These are typically covered in blue rubber and are located before and after the actual backflow device. Your backflow should have the valve handles in-line with the piping when it is on. You should turn the handles perpendicular to the pipe to stop the flow of water. In turning both valves , you will keep water from entering the device.  Next, remove the caps off other check cocks (if they are still there). Initially the groove for the screwdriver is perpendicular to the piping (this means they are closed).  You need to open them by turning with a screwdriver.     When you open the check cock (note that the screw is in line with the top check cock) some water may flow out. Releasing this water that was in the backflow device is important. If allowed to stay in there, the water may expand when it freezes and crack the device. When both are opened, the water is drained. NOTE: If the water doesn’t stop running out after a couple minutes, you probably haven’t turned off the water to the device (shown how to do in the beginning of this article).   *** REMEMBER to turn your valves and system back on when freeze is over. To turn on your system do everything listed in reverse order.   CONTACT VISTA LANDSCAPING WITH ANY QUESTIONS OR CONCERNS.  

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