KMC Controls MCP-1140-5520 Actuator

The KMC Controls MCP-1140-5520 Actuator is a heavy-duty pneumatic damper actuator designed for professional HVAC engineers and facility maintenance technicians. Engineered with a robust 4-inch stroke and a high-strength black plastic body, this assembly provides 176/154 in-lb of torque to precisely position automatic air dampers in larger air handling units and complex ventilation systems. Operating on an 8-13 PSI spring range, it supports both gradual and two-position control applications, ensuring reliable modulation for optimized indoor air quality. This specific model is the manufacturers direct replacement for the legacy M574-5105 and M574-5520 units, featuring a post-mount configuration and a pre-installed clevis linkage for fast field installation. The internal spring design ensures a predictable fail-safe position upon loss of control pressure, a critical requirement for safety-sensitive commercial ductwork. By eliminating common failure points found in older metal-cased units, the MCP-1140-5520 actuator offers superior mechanical longevity in demanding environments.

• Direct Legacy Compatibility: Seamlessly replaces discontinued M574-5105 & M574-5520 models without requiring extensive field modifications.
• High Torque Performance: Delivers up to 176 in-lb of force, making it suitable for large-scale multi-blade dampers and heavy-duty louvers.
• Simplified Installation: Features a factory-assembled clevis and post-mount design to reduce labor time for HVAC contractors.
• Precise Modulation: The 8-13# springs provide smooth, linear response to pneumatic signals for accurate airflow regulation.
• Fail-Safe Reliability: Proven internal spring-return mechanism ensures dampers return to their designated safety position during signal interruptions.

Is the MCP-1140-5520 suitable for dual-position or modulating control?
Yes, this pneumatic actuator is designed to handle both gradual (proportional) modulation and simple two-position on/off damper control depending on your system's signal configuration.

Will this unit work with my existing M574 series mounting hardware?
This model is the designated direct replacement for the M574-5105 and M574-5520. It utilizes a standard post-mount, which typically aligns with previous KMC/Barber-Colman hardware specifications of this class.

What is the maximum air pressure this actuator can handle?
While the operating spring range is 8-13 PSI, most veteran technicians recommend maintain air supply pressures within the standard 20-30 PSI range to prevent diaphragm damage while ensuring sufficient force for the 176 in-lb rating.

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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.