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One Zone Slow to Shut Off (15-20 Sec): Solenoid or Bleed Screw Loose

Manual operation: all zones work but one takes 15-20 seconds to stop after turning off. Others stop immediately.

Simple Fix

Matt: "My guess is the solenoid or the manual activation is slightly unscrewed. Dig the valve up and tighten both. Turn clockwise. You don't need to screw them into the ground just a little until they're snug."

If unsure, provide valve model number for specific directions. A slightly loose solenoid or bleed screw lets control water bleed off slowly, delaying diaphragm closure.

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