winterize sprinkler system

How to Blow Out Winterize Your Sprinkler Irrigation System

In September 5, 2016

Winter is just around the corner. When the cold hits, there’s a good chance of your sprinkler irrigation system becoming damaged. Often, draining the irrigation system of water is not enough. Sometimes water is left in the pipes. Even a small amount of water can freeze. Also, deep underground pipes tend to crack and burst easily. Its always a good idea to learn how to blow out or winterize yoru sprinkler irrigation system.

So how do you protect your sprinkler or irrigation system pipes from cold damage? Precision Irrigation Systems of Dallas, TX shares tips below on how you can effectively winterize a sprinkler irrigation system. Follow these tips to avoid sprinkler system weather damage for a long-lasting irrigation system:

Manual draining of the pipes

The first step is to remove as much water out of your irrigation system as possible. Shut off the water supply to your sprinkler system. Then, open all manual drainage valves. These valves are usually located at the ends and low points of the sprinkler system. Once water has drained out of the main line, check and drain all valves. Types of valves to check include the boilder drain valve, water shut off valves, and back flow device. You should also pull up the sprinklers to make sure all water has drained out of the sprinkler devices.

Automatic draining systems

Some irrigation systems will automatically begin draining if pipe pressure is less than 10 PSI. To activate this drainage system, simply shut off the water pressure. Once water has drained out of the main line, do the same valve checks for manual draining as mentioned above. 

Blow out method to ensure thorough draining

Even when following precise directions to drain an irrigation system, it is almost impossible to get every drop of water out. To blow out and repair an irrigation system, you will need to force compressed air through the pipes. The compressed air pressure will remove any remaining water.

If you own an air compressor or can rent one from a local store, you can blow out your sprinkler irrigation system yourself. Most home air compressors aren’t powerful enough to blow out an entire system in one go. However, you can blow out the pipes zone by zone. Connect the air compressor to the blow out port on your irrigation system. Next, set the air pressure to 80 PSI for PVC piping or 50 PSI for flexible polyethylene piping. Finally, switch the compressor on. The sprinkler heads will pop up and emit water. Once the pipes have run dry, disconnect the compressor immediately to prevent pipe damage.

Winterizing your sprinkler irrigation system is something you can do yourself with a little know how and for smaller systems. For professional advice and sprinkler irrigation services to prepare your landscape irrigation system for winter, contact Precision Irrigation Systems in Dallas, TX today.

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