Sprinkler valves control water to each zone. An electric valve opens when its solenoid gets a signal from the controller and closes when the signal stops.
Valve repair covers cleaning debris, replacing a diaphragm, solenoid or bonnet, and fixing leaks at the valve. When a valve is cracked or worn out, it’s replaced.
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Signs You May Need This Repair
- A zone won’t turn on
- A zone won’t shut off
- Water in the valve box
- Low heads seeping after a cycle
- A zone that works intermittently
Common Causes
- Debris inside the valve
- Worn or torn diaphragm
- Failed or stuck solenoid
- Loose or damaged bonnet
- Cracked valve body or fittings
How a Technician Handles It
- Confirm the zone’s symptoms and check the controller output
- Test the solenoid and operate the valve manually
- Shut off water and open the valve to inspect the diaphragm and ports
- Clean, rebuild or replace parts as needed
- Restore water and test the zone
Repair or Replace?
Cleaning or replacing the diaphragm or solenoid fixes many valve problems. Replacement makes sense for cracked bodies, very old valves or valves that keep failing.
DIY or Call a Pro?
Checking settings and closing the irrigation shutoff are safe. Opening valves involves pressurized parts and often electrical testing, so it’s usually best left to a technician.
Typical Cost
See our Sprinkler Valve Replacement Cost Guide for typical ranges. Prices vary by location, parts, access and how much diagnosis is needed.
Related Problems
- Why Is My Sprinkler Valve Leaking?
- Why Won’t My Sprinkler Valve Open?
- Why Won’t My Sprinkler Valve Close?
- Why Won’t My Sprinkler Zone Turn On?
- Why Won’t My Sprinkler Zone Shut Off?
- Why Is My Sprinkler Valve Box Full of Water?
Related Repairs
Frequently Asked Questions
Can a sprinkler valve be repaired instead of replaced?
Often. Cleaning or replacing the diaphragm or solenoid fixes many problems.
When should a sprinkler valve be replaced?
When the body is cracked, the valve is very old, or it keeps failing after repairs.
How do I know if the valve or the solenoid is the problem?
A technician tests the solenoid electrically and operates the valve manually to tell them apart.
Bottom Line
Most sprinkler valve problems can be repaired by cleaning the valve or replacing a worn part. A technician can test the valve and solenoid and recommend repair or replacement.
Diagnose My Sprinkler Problem See Typical Repair Cost Find a Sprinkler Pro
