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How to Repair Broken Irrigation Valves


An efficient irrigation system is vital to maintaining a healthy lawn and garden. But when valves break, they can interrupt water flow or cause leaks, leading to wasted water and potential damage to your outdoor oasis. In this guide, we’ll walk you through a step-by-step approach to repair broken irrigation valves, so you can get your system up and running quickly.

Identifying the Problem

Firstly, determine whether it’s truly the valve at fault. Typical signs of a broken valve include:

  • Unresponsive valves that won’t open or close
  • Leaks around the valve area
  • Visible damage to the valve body or solenoid

Tools and Materials

To repair an irrigation valve, you will need the following tools and materials:

  • Screwdrivers (Phillips and flathead)
  • Replacement parts (specific to your valve model)
  • Wrench or pliers
  • Teflon tape
  • Wire connectors (if dealing with wiring issues)

Step-by-Step Valve Repair

Step 1: Turn Off the Water Supply

Always start by turning off the water supply to your irrigation system to prevent any accidental flooding.

Step 2: Access the Valve

Carefully dig around the valve box and remove any debris. Take the box lid off to expose the valves.

Step 3: Disassemble the Valve

Using a screwdriver, remove the screws on the valve lid. Lift the lid off and inspect the diaphragm and other internal parts for signs of wear or damage.

Step 4: Replace Damaged Parts

Replace the damaged components with new parts. Make sure these are compatible with your valve model.

Step 5: Check Electrical Connections

If the valve isn’t functioning due to electrical issues, make sure the solenoid is properly connected. Inspect the wires for corrosion or damage, trimming and reattaching them with wire connectors if necessary.

Step 6: Reassemble the Valve

Before reassembling the valve, wrap the threads of the solenoid with Teflon tape to ensure a watertight seal. Carefully place the diaphragm and the lid back, tightening the screws without over-torquing them.

Step 7: Test the Valve

Slowly turn the water supply back on and activate the valve manually or using the controller. Check for leaks and proper functioning.

Step 8: Cover the Valve Box

Once you’ve confirmed that the valve is working correctly, replace the valve box lid and backfill any excavated soil.

Repairing broken irrigation valves can be a straightforward process when you follow these steps. Regular maintenance and timely repairs can extend the life of your irrigation system and save water. Remember to always refer to the manufacturer’s instructions for specific guidance on parts and assembly for your valve model.

Note: If you’re not comfortable performing these steps yourself or if the problem persists, it’s best to call in a professional plumber or irrigation specialist.


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.