How do I add a master valve to a Hunter controller?

Wire the master valve solenoid to the MV (or P/MV) terminal and shared common, then enable master valve in the controller’s settings so it opens with every zone. Use a normally closed master valve on the mainline. If you also have a flow sensor, follow the model’s sensor terminal diagram so the controller can shut down on high flow.

Still stuck? Contact us with a photo of the part label — we confirm fit within one business day.