Mr Sprinkler Repair

Sprinkler Repair

Mr Sprinkler Repair

Sprinkler Repair


How Do You Know If A Sprinkler Valve Is Bad?

Identifying a faulty sprinkler valve is crucial for maintaining an efficient and operational irrigation system. Here are some common signs that may indicate your sprinkler valve is bad:

1. Visible Leakage

One of the most obvious signs of a malfunctioning sprinkler valve is water leakage. If you notice water leaking from the valve area when the system is off, it’s a clear indication that the valve is not closing completely. This could be due to debris inside the valve, a worn out diaphragm, or a broken seal.

2. Sprinkler Heads Not Activating

If your sprinkler heads aren’t popping up or working as expected when the system is turned on, the issue might be with the valve responsible for supplying water to those specific heads. This could be due to an electrical issue, a blockage, or a mechanical failure within the valve.

3. Sprinkler Heads Stay Up

Conversely, if the sprinkler heads stay up and continue to release water after the system is supposed to be off, this could indicate a problem with the valve not closing properly, which may need repair or replacement.

4. Unusual Noises

Valves sometimes make noises that can indicate a problem. If you hear a humming noise, it could be due to an electrical issue, like a solenoid failure. A banging or knocking sound, often referred to as water hammer, might occur if the valve closes too quickly, potentially indicating a problem with the valve’s internal components.

5. Erratic or Weak Water Flow

If the water flow from your sprinkler heads is erratic or weaker than normal, it might be due to a partially obstructed valve that’s not opening fully. This can be caused by sediment build-up, a damaged valve diaphragm, or other types of physical blockages.

6. The Valve Doesn’t Open Manually

Most valves can be opened manually, bypassing the electronic control. If a valve fails to open when manually operated, this is a strong indication of a mechanical failure, such as a seized diaphragm or a problem with the valve’s internal gears.

7. Electrical Problems

Using a multimeter to test the solenoid’s resistance is a good way to check for electrical problems. A resistance reading that is outside the manufacturer’s specifications suggests the solenoid is faulty. Similarly, if the controller sends a signal but the valve does not activate, the issue might be with the solenoid or wiring.

Addressing the Issue

Once you’ve determined that a sprinkler valve is bad, the next steps involve troubleshooting to decide whether cleaning, repairing, or replacing the valve is the best course of action. In many cases, cleaning out debris or replacing a worn diaphragm can resolve the issue. However, if the valve is severely damaged or has electrical problems, replacing it may be necessary.

Regular maintenance and inspection of your sprinkler system can help identify issues early on, preventing larger problems and ensuring your lawn and garden receive the proper care they need to thrive.


If you have any questions or need any type of sprinkler system repair, the experts at Mr Sprinkler Repair will be glad to help. Give us a call or 855-695-1000 to set an appointment.