Schneider Electric (Barber Colman) MK-4411 Pneumatic Damper Actuator

The Schneider Electric (Barber Colman) MK-4411 Pneumatic Damper Actuator is a heavy-duty proportional pneumatic actuator designed for precise control of dampers and air valves in high-demand HVACR systems. Built with a rugged cast aluminum body and a replaceable beaded molded neoprene diaphragm, this 11 sq. in. effective area actuator ensures reliable performance in both industrial and commercial applications. It features a 5 to 10 PSI spring range and a variable stroke ranging from 1/2 inch to 3 inches, with a factory setting of 2 inches for versatile installation. Functioning as a spring return actuator, it provides a fail-safe mechanical return upon loss of air pressure. This unit is the direct replacement for M593-6095 and is engineered to maintain system efficiency under a 30 PSIG maximum safe air pressure. The 1/8" FNPT air connections facilitate seamless integration into existing pneumatic control loops, making the MK-4411 actuator a standard for veteran technicians optimizing air handling unit performance.

Key Benefits

• Field Versatility: Features an adjustable stroke from 0.5 to 3 inches to match specific damper linkage requirements.
• Durable Construction: The die-cast aluminum housing and sintered bronze shaft-guide bushing provide long-term stability in harsh mechanical environments.
• Compatibility: Serves as the critical direct replacement for M593-6095 models, ensuring minimal downtime during retrofits.
• Precise Control: Optimized for 5-10 PSI spring range applications requiring accurate proportional positioning.
• Easy Maintenance: Utilizes a replaceable neoprene diaphragm (PNV-002) to extend the service life of the actuator assembly.

Common Questions

What is the maximum air pressure for the MK-4411?
The unit is rated for a 30 PSIG maximum safe air pressure, though standard proportional control typically operates within the 5 to 10 PSI range.

Can the stroke be adjusted after installation?
Yes, the adjustable stroke can be modified between 1/2" and 3" using the internal linkage to accommodate various damper rotations and torque requirements.

Does this unit replace the Barber Colman M593-6095?
The MK-4411 is the official direct replacement for M593-6095, featuring identical mounting characteristics and performance specifications for the 5-10 PSI range.

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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.