Designed for use with the Macon NT Series Valves, the VA series electric zone valve actuator is a new concept in zone controls. Utilizing a gearless electric thermic operator, this valve actuator operates off low power 24V AC. Proportional control can be realized by using time proportioning techniques. The VA series is ideal for control of Radiators, Fin-Tube, Zones, Solar Panels, Heat Pumps, etc.