What occurs if a valve requires 24V but the controller only provides 12V?

When a valve is designed to operate at a specific voltage level, in this case, 24 volts, it is constructed to function optimally at that rating. If the control system only provides 12 volts, which is half of the required voltage, the insufficient power supply may not meet the force needed to fully activate the valve’s mechanism.

Consequently, the valve may not receive enough electrical energy to open properly, leading to scenarios where it either does not open at all or only partially opens, depending on the design and internal resistance of the valve components. This situation usually results in insufficient movement of the valve's internal components, inhibiting proper operation. Understanding the relationship between voltage and operational capability is crucial for ensuring that components in an irrigation system function as intended.