KMC Controls MCP-1040-1211 Actuator

The KMC Controls MCP-1040-1211 is a heavy-duty 4-inch pneumatic damper actuator designed for precise airflow control in commercial HVAC systems. This right-angle mount unit features a factory-installed positive positioner and a 1/2 inch crank arm, making it an ideal choice for multi-zone units or air handlers requiring consistent torque and graduated positioning. For technicians performing retrofits, the MCP-1040-1211 serves as the direct replacement for M574-1211 and MCP-1040-9211, ensuring a drop-in fit without extensive linkage modification. It utilizes an 8-13 psi internal spring and a 5 psi span spring to provide stable proportional control, effectively managing air dampers even in space-constrained installations. Built with a rugged metal housing, this Series 4 actuator is engineered to withstand the demanding mechanical stresses of industrial ventilation while maintaining signal accuracy across the full stroke of the damper shaft.

Key Benefits:

• Universal Compatibility: Specifically designed as an OEM damper actuator replacement for legacy M574 and MCP-1040-9211 models.
• Enhanced Control: Integrated positive positioner eliminates hysteresis, ensuring the damper reaches the exact commanded position.
• Flexible Installation: The right-angle bracket and included 1/2" crank arm simplify mounting in tight plenums and mechanical rooms.
• Durable Pneumatic Design: Features a 4" stroke and high-quality diaphragm for reliable gradual or two-position operation.

Common Questions:

What is the standard spring range for this actuator?
The unit comes standard with an 8-13 psi internal spring and a 5 psi span spring. If your sequence of operation requires a different range, a 10 psi span spring can be ordered and swapped in the field.

Can this be used for two-position (on/off) applications?
Yes, although it is optimized for gradual positioning thanks to the built-in positioner, it functions effectively for two-position air damper control in high-torque scenarios.

What shaft sizes does the crank arm support?
This specific model is furnished with a crank arm designed for 1/2" damper shafts, which is the standard for most medium-to-large commercial air handling units.

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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.