Schneider Electric (Barber Colman) M573-5111 Piston Damper Actuator

The Schneider Electric (Barber Colman) M573-5111 Piston Damper Actuator is a heavy-duty pneumatic damper actuator designed for precise positioning in commercial HVACR systems. Utilizing a 3-inch stroke and a dependable 8 to 13 psig spring range, this unit is engineered for right-angle mounting, providing the necessary torque for air conditioning, multi-zone, and unit ventilator applications. As a veteran-grade pneumatic control actuator, it features a rolling-type neoprene diaphragm and glass-filled nylon housing for durability in environments ranging from -20 to 140°F. The M573-5111 serves as a direct drop-in for legacy part numbers such as 2473-140, M503-524-501, and MK-573-51, ensuring seamless integration into existing pneumatic HVAC systems without the need for extensive field modifications.

Installation is streamlined with the included right-angle mounting bracket, ball joint, push rod, and crank arm tailored for 1/2-inch damper shafts. The fail-safe spring mechanism is designed to retract the actuator shaft immediately upon loss of air pressure, protecting your system's airflow integrity. With a 20 psig nominal supply air pressure requirement and a barbed fitting for 1/4-inch O.D. plastic tubing, this actuator provides the reliable, proportional control proportional or two-position control that professional contractors demand for high-efficiency mixing boxes and fan coil units.

• Universal Compatibility: Exact replacement for Barber Colman 2473-140 and M503-524805 models.
• Fail-Safe Operation: Mechanical spring return ensures the damper shaft retracts safely during air pressure failure.
• Complete Linkage Kit: Includes a crank arm, ball joint, and right-angle bracket for mounting directly to 1/2" shafts.
• Rugged Construction: Durable glass-filled nylon housing and neoprene diaphragm handle terminal box and unit ventilator demands.
• Precision Control: Optimized for an 8-13 psi range to provide smooth graduation in pneumatic sequences.

Is the M573-5111 compatible with 1/4" tubing?
Yes, it comes standard with a barbed fitting designed for 1/4-inch O.D. plastic tubing, which is the industry standard for pneumatic control lines.

Can this actuator be used for proportional control?
This piston damper actuator is versatile and can be used for both proportional and two-position applications depending on the control signal provided.

Does it include the mounting hardware?
Correct. This package includes the right angle mounting bracket, push rod, ball joint, and the crank arm for a standard 1/2" damper shaft.

This item is not eligible for free shipping.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.