Rain Bird Solenoid Valve Stuck On After Manual Activation

20-Year-Old Rain Bird Valve Runs Continuously After Manual Solenoid Turn

Community system: 24 zones, 2-3 valves/zone. One valve manually turned via solenoid, now runs continuously. Can be shut off by turning valve stem. Solenoid replaced.

Two Fixes

1. Check wire connections – Redo with waterproof wire nuts.
2. Rebuild valve – Shut off water, disassemble, replace all internal parts (diaphragm, spring, seals).

20-year-old valves: rebuild is overdue.