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Control Valve Won't Shut Off – Replace Valve After Diaphragm Fails

Valve runs when controller off; pressure bleed stops it. New diaphragm didn't fix.

Causes

Valve body cracked/seat damaged.
Debris under diaphragm.
Solenoid plunger stuck.

Best Fix

Replace entire valve (same model/brand). Glued/clamped in ground makes repair difficult. Ensure flow arrow correct. Use www.irrigationtutorials.com for guide.

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