May 12, 2026 · 9 min read · by SprinklerMap Team

Irrigation solenoid valve: how to choose and wire it

Guide to irrigation solenoid valves: operating voltage, flow rate, common wiring, and diagnosing faults.

How it works and wiring

Irrigation valves operate at 24 V AC. A shared common wire (COM) returns current from all valves to the controller; individual coloured wires switch each zone. Six zones need seven wires, not twelve.

Valve that does not open: check 24 V AC at solenoid terminals. Valve that does not close: remove and rinse the diaphragm under running water.

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Irrigation solenoid valve: how to choose and wire it

How it works and wiring

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