Backflow in sprinkler systems is a critical issue that can have significant implications for the safety of our water supply. Backflow occurs when water flows backward through a water supply system, potentially contaminating it with hazardous substances. This article explores effective methods to protect your backflow systems, ensuring the safety and reliability of your water supply.
01. Turn off the shut-off valve
On most residential backflow devices, there are two shut-off valves. These are typically covered in blue rubber and are located before and after the actual backflow device. You need to shut the one off before the device (#2 on the picture above) to keep more water from entering it. This is the lower of the two shut off valves. Turning it a half turn will turn the water flow to the backflow device off
02. Release the water pressure
Now that you have shut off the water valve, you must release the water that is in the device so that it doesn’t expand when it freezes and crack the device. The way to do this is, with a flat head screwdriver, loosen the two bleeder valves (#3 and #4 above) that are usually located just under the plastic top of the backflow. Sometimes, they may even have rubber inserts you have to remove before you can see the flathead screw. When opening these, be aware that the water will spew out for a few seconds and your hands will get wet.
NOTE: If the water doesn’t stop spitting out after a couple of minutes, you haven’t fully turned off the water in step 1.
03. Leave the smaller bleeder valves open
This will allow the water to expand and freeze without being hindered and causing damage.
04. Insulate your Backflow
At almost all home improvements stores, they carry pipe insulation. All you need is that and duct tape, and you can wrap the pipe as shown in the picture above. You’ll also want heavy-duty scissors to cut the insulation around the bleeder and shut-off valves for easy access.
05. Turn Your water back on
Don’t forget after the freezing temperatures have passed to go back out and close the bleeder valves, turn on the shut-off valve.
Safeguarding your backflow preventer during cold weather is essential to maintaining the integrity and functionality of your home’s irrigation system. By following the steps outlined in this guide, such as turning off the shut-off valve, releasing water pressure, properly insulating the device, and conducting post-freeze inspections, you can prevent costly damages and ensure that your sprinkler system remains in optimal condition. Regular maintenance and understanding the importance of backflow prevention are key to a hassle-free experience with your irrigation system throughout the year. Remember, when in doubt, don’t hesitate to seek professional assistance to ensure your system’s longevity and efficiency. Stay prepared, and your backflow preventer will be well-protected against the chill of winter.
