In a proportional valve system, which statement is correct about the valve spool?

In a proportional valve system, the spool movement is directly related to the electrical input it receives, which is the basis for the term "proportional." This means that as the electrical signal increases, the spool shifts accordingly, allowing for a corresponding change in flow rate or pressure. This relationship allows for precise control over the hydraulic system, providing smooth transitions and adjustments in operation based on the input signals.

The movement of the valve spool is designed to change in response to the varying electrical signals, making it essential for applications requiring fine control over hydraulic functions. By adjusting the electrical input, operators can achieve the desired flow and pressure, which is crucial in many industrial applications.