Sprinkler repair

Sprinkler valve leaking?

If water dribbles from the lowest head and then stops, it’s usually low head drainage. If it never stops, water is getting through the valve, often from debris on the diaphragm.

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Check this first

  1. Watch whether it stops. Low head drainage stops once the pipe has emptied; the fix is check valves in the heads (Hunter).
  2. Never stops? The zone valve is leaking through. A check valve won’t fix that (Hunter).
  3. Clean the valve: shut off the water, take the valve apart, rinse all the parts and reassemble. Replace the diaphragm if it’s damaged (Hunter, Hunter).
  4. Leaking from the valve body: snug the bonnet bolts and hand-tighten the bleed screw and solenoid. A cracked body means replacing the valve (Hunter).
▶ Watch howRain Bird Residential Valve Troubleshooting: Using the Bleed Screw to Fix a Sprinkler LeakOfficial Rain Bird video on YouTube ↗

Parts you may need

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When to call a pro

Not comfortable digging up valves or testing wiring? The EPA suggests hiring an irrigation professional certified by a WaterSense labeled program (EPA WaterSense).

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Steps summarized from the linked manufacturer and EPA pages (checked 2026-10-18). If your valve or head brand differs, follow its manual.

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