The Macon Controls VAC24 Valve Actuator is a normally closed, 24-volt electric actuator designed for reliable control of valves in HVAC systems. It operates by receiving a control signal that drives the actuator to open or close the valve, regulating water or fluid flow as required. This actuator is commonly used with fan coil units, air handling units, and hydronic heating and cooling equipment. It delivers precise flow control, energy-efficient operation, quiet performance, and dependable reliability, helping improve temperature regulation, system efficiency, and overall occupant comfort.