Belimo AFBUP-X1 Valve Actuator, 24 to 240V (UP),On/Off., Valve Actuator, AC 24...240 V / DC 24...125 V, On/Off. The AF series actuators provide true spring return operation for reliable fail-safe application and positive close off on air tight dampers. The spring return system provides consistent torque to the damper with, and without, power applied to the actuator
