After draining out most of the water from the sprinkler system, hook up an air compressor to blow the lines clear of any remaining water. One way to tell if your system is manual-draining is if your sprinkler heads have check valves on them.Once you know what type of system you have, you can accomplish almost all the necessary winterization on your own with the information below—though, of course, you should keep your owner’s manual nearby for reference.It is strongly advised that you don’t skip Step 4, the pro portion of the process. I found out recently that my new home's irrigation system was installed in the mid-eighties, and it seems most parts (the pex pipes for laterals, the 1" PVC for the run to the valves for four zones, and the backflow preventer itself) were well-built for that time. If you fail to winterize your sprinkler system properly, when the cold weather hits, any water left in the lines can freeze, expand, and crack, potentially causing costly damage.For the various types of sprinkler systems in use today, there are two primary methods of releasing this water: draining it from the valves and/or using an air compressor to blow it out of the irrigation pipes. Water flows from the drain into the bucket. I shut off the main water supply to the system.

You can easily winterize your backflow preventer to protect it … Turn off the valve between the backflow prevention device and the main line of your sprinkler system going underground to your system.
Turn the valve off, empty the bucket, turn the valve back on and repeat until the pipe is fully drained. If someone knows all about your exact system, it seems best to take their advice. Please help us continue to provide you with our trusted how-to guides and videos for free by whitelisting wikiHow on your ad blocker. Secure this, and then cover over the valve with earth, and leave until spring.DoItYourself.com®, founded in 1995, is the leading independent Because the consequences of leaving even the slightest bit of water behind in your pipes can be dire, sprinkler system manufacturers recommend that homeowners follow both procedures every fall before temperatures dip to 30 degrees Fahrenheit.Depending on the type of drain valve your system utilizes, draining could be truly automatic, or it could be manual, requiring that you pull a few levers to get things moving. In the spring, simply turn off the rain mode and watering will resume like clockwork.Disclosure: BobVila.com participates in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for publishers to earn fees by linking to Amazon.com and affiliated sites. Thank you.The entire goal of winterizing your sprinkler system is to ensure that your pipes do not freeze and burst. Place this around the whole of the backflow valve, making sure that the strips of tape overlap in order to give you a good seal. Consult your owner’s manual.If your system is on a timer, shut it off for the season.

I would appreciate it if you used my links to purchase these products if you found this article useful. If your sprinklers have check valves, you'll need to pull up on the sprinklers to allow the water to drain out of the bottom of the sprinkler body. The first way to protect your backflow preventer from damage during the winter is simply to remove it from the ground. 3. I spent over 20 years in the irrigation industry and later transitioned over to the aerospace industry. Then, I was told to go to the sprinkler box with all the valves and solenoids, and to open up the small plugs and allow the water to flow out. Depending on the location of the drain valves, there could be some water left in the backflow, the piping, and the sprinklers. You will either need to turn the dial to the “off” position or set the system to "rain" mode. ... How to replace a lawn sprinkler backflow preventer - Duration: 7:00. iScaper1 86,274 views. I have an odd irrigation setup. Do we need a backflow preventer ? Shut the backflow valve and then open the manual drain valve on the sprinkler system. This is because air is less dense than water and does not have enough mass to seal the sprinkler heads as they rise.Most likely you will only see air bubbles around the sprinkler heads as it runs.Once that is complete, I like to leave the test cocks open on the backflow. 4. Install the 1/4″ quick disconnect fitting into one of the test cocks on the backflow preventer.

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