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Sprinkler Flushing Guide

Flushing a sprinkler system is a crucial maintenance step that removes dirt, debris, and sediment buildup, which may hinder the system’s performance. This guide will take you through the straightforward process of flushing your sprinkler system to ensure it runs efficiently and extends its lifespan.

What You’ll Need

  • A flathead screwdriver or wrench (for opening valves)
  • Protective eyewear and gloves
  • A bucket (optional)

Steps to Flush Your Sprinkler System

1. Shut Off the Water Supply

Always start by turning off the water supply to prevent water pressure from building up as you work. Locate the main shut-off valve for your sprinkler system and turn it off.

2. Open the Main Drain Valve

The main drain valve is usually located at the lowest point of the sprinkler system. Place a bucket under it if you wish to catch and dispose of the water properly, then open the valve using your tool. This will release any water trapped inside the system.

3. Open Each Zone Valve

Your sprinkler system likely has multiple zones. Go to each zone’s control valve, found at the manifold, and manually open it to allow air into the pipes and facilitate the flushing process.

4. Flush the Zones One by One

Starting with the zone closest to the main water supply, turn the zone’s water on for a few minutes and allow it to run. This will flush out dirt and debris through the heads. Repeat this step for each zone until all have been flushed.

5. Inspect Sprinkler Heads

While flushing each zone, closely inspect the sprinkler heads. If any heads are clogged, remove them, and clear out the debris. You might need a small wire or pin to poke out stubborn debris from the nozzles.

6. Close the Drain Valve

After flushing all zones, go back to the main drain valve and close it. Ensure it’s tightly sealed to prevent leaks when the water pressure is restored.

7. Turn On the Water Supply

Slowly turn the water supply back on. A gradual increase in water pressure will help prevent any damage due to a surge.

8. Test Your System

Run each zone one more time to ensure the water sprays evenly from all the heads. Look out for any irregularities in spraying pattern or range that could indicate issues.

9. Adjust Sprinkler Heads if Necessary

After testing, make any necessary adjustments to the sprinkler heads to ensure proper coverage and optimal sprinkler performance.

 

Regular flushing of your sprinkler system will keep it in great working condition and prevent malfunctions due to blockages. It is recommended to perform this maintenance at the start and end of the watering season or any time reduced performance is noticed.

Safety Tip: Always wear protective eyewear and gloves when flushing your sprinkler system, as water pressure can cause debris to eject at high speeds.

Note: Always refer to your system’s user manual for specific instructions related to your particular model.

Remember, a little bit of maintenance goes a long way in ensuring your lawn is beautifully watered all season long!

 

If you have any questions our irrigation contractors, the experts at SprinklerRepair.com will be glad to help. Give us a call or (888) 427-5022 to set an appointment.