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How to Blow Out an Irrigation System: Big Tips for Success

How to Blow Out an Irrigation System: Big Tips for Success

Preparing your irrigation system for winter is crucial to prevent costly damages. Knowing how to blow out an irrigation system ensures the longevity of your sprinklers, pipes, and valves. Without proper winterization, frozen water in pipes can cause cracks and leaks.

In this guide, we’ll walk you through everything you need to know to safely and effectively blow out your irrigation system. Whether you have a small garden system or a full-scale lawn irrigation setup, these steps will help you get it done right.

Why Blowing Out an Irrigation System is Important

A properly winterized system ensures safety and longevity. If water remains in your pipes, it can freeze and expand, causing cracks. This leads to expensive repairs in the spring.

When to Blow Out Your Irrigation System

  • Before temperatures drop below freezing
  • Typically in late fall, before the first hard frost
  • When you stop using the sprinkler system for the season

Tools and Equipment Needed

To properly blow out your irrigation system, you’ll need:

  • An air compressor (at least 50-100 PSI)
  • An adapter to connect the compressor to the system
  • Protective goggles
  • Owners manual for your specific irrigation system

Steps to Blow Out an Irrigation System

1. Shut Off the Water Supply

Shut off the main water valve that supplies the irrigation system. This ensures no additional water enters the pipes during the blowout process.

2. Attach the Air Compressor

Find the access point where you can connect your air compressor. Use an adapter to ensure a secure fit before turning on the compressor.

3. Start Blowing Out the Zones

Run the compressor slowly, starting with the furthest zone. Monitor each zone until water has been completely expelled.

4. Repeat for all Zones

Continue working through each section of your irrigation system. Repeat the process until all pipes are dry.

5. Disconnect and Store Your Equipment

Once completed, disconnect the air compressor, close all valves, and store necessary tools for next season.

Common Mistakes to Avoid

  • Using too much air pressure, which can damage pipes
  • Not completely removing all water from the system
  • Skipping zones when blowing out the water

FAQs

Can I blow out my irrigation system without an air compressor?

While it is possible to drain your system manually, using an air compressor is the most effective method to ensure all water is removed.

How often should I blow out my irrigation system?

You should perform a blowout once per year, typically in the fall before the first freeze.

Does blowing out an irrigation system prevent all winter damage?

Blowing out your system significantly reduces the risk of winter damage, but checking for leaks in the spring is still advised.

Additional Reading

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