Schneider Electric (Barber Colman) MK-7101 3-8# Damper Actuator 67.5Lb-In

The Schneider Electric (Barber Colman) MK-7101 is a pneumatic damper actuator that allows for precise control of air dampers in HVAC systems. This little, dependable gadget uses compressed air pressure to move dampers around, controlling the flow of air in the system. Compressed air pressure is transformed into mechanical force by the MK-7101. The actuator extends a piston rod that is attached to the damper linkage when air is delivered to it. The damper is opened by this movement, increasing airflow. Conversely, when the air pressure is released, the actuator's spring retracts the piston rod, closing the damper and reducing airflow.