The valve controls an entire sprinkler zone
When multiple heads fail together, the valve deserves attention. Residential irrigation valves use an electrical solenoid and an internal diaphragm to open and close water flow.
A zone will not turn on
The cause may be a failed solenoid, damaged controller wire, poor splice, closed flow control, debris inside the valve, or a controller issue. Testing is faster than replacing parts at random.
A zone will not shut off
Debris or diaphragm damage can prevent a valve from sealing. Shut the irrigation water supply off if a zone continues running and cannot be stopped from the controller.
Low pressure on one zone
A valve that only partially opens can mimic a pipe leak. Comparing pressure and checking the valve helps distinguish the two.
Learn more about sprinkler valve repair in Grosse Pointe.
Manufacturer resource
For valve operation and troubleshooting background, see Hunter Industries valve support.
Manual operation helps separate the problem
If a valve opens manually but will not open from the controller, the hydraulic portion can move water and the problem is more likely electrical: controller output, field wiring, a splice or the solenoid. If the valve will not open manually, verify water supply and inspect the valve itself.
When a valve stays on
A valve that continues running with the controller off often has debris under the diaphragm, a damaged diaphragm, a loose manual bleed or a solenoid that is not fully closed. Shut off the irrigation supply before opening a valve body.
Related guides
Read why a sprinkler zone keeps running and how to separate solenoid and wiring problems.
