What is the primary role of Digital Valve Control (DVC)?

• A. It is attached to the valve actuator controls and monitors the valve position
• B. It measures flow rate and computes energy balance
• C. It handles network communication for sensors
• D. It provides temperature compensation

Answer: (A)

The main idea is that valve control is about driving the valve and knowing where it is. A Digital Valve Controller sits on the valve actuator, takes the control signal from the process controller, and moves the actuator accordingly. It also reads a valve-position sensor and feeds that information back so the system can compare the commanded position with the actual position and adjust as needed. This combination of actuation plus position monitoring is what keeps flow precisely controlled.

Think of it as the device that both powers the valve and confirms its position, forming the closed-loop control needed for reliable valve operation. The other functions described—measuring flow and energy balance, handling generic network communication for sensors, or providing temperature compensation—are not the primary role of the valve controller.