Barber Colman M574-5520 Actuator

The Barber Colman M574-5520 is a pneumatic damper actuator designed for precise linear control in HVAC systems. Operating within an 8 to 13 psig spring range, it features a 4-inch stroke and a spring return mechanism that ensures the actuator returns to its fail-safe position upon loss of air pressure. This actuator is suitable for applications requiring reliable modulation of dampers and valves.​

Technical Specifications

  • Model: M574-5520

  • Type: Pneumatic damper actuator

  • Stroke Length: 4 inches

  • Spring Range: 8 to 13 psig

  • Control Signal: Proportional

  • Spring Return: Yes

  • Mounting: Right-angle mounting

  • Construction: Durable materials for long-term operation

  • Condition: New​

Key Features

  • Provides precise proportional control for HVAC dampers

  • Spring return mechanism ensures safety during air pressure loss

  • Compact design suitable for various installations

  • Designed for 8 to 13 psig control signals

Compatible Applications

  • HVAC systems requiring modulating damper control

  • Ventilation and exhaust systems

  • Industrial process control requiring pneumatic actuation

Installation & Maintenance Notes

  • Ensure proper alignment during installation to prevent binding

  • Verify pneumatic connections are secure and leak-free

  • Regularly inspect actuator for signs of wear or damage

  • Follow manufacturer guidelines for maintenance procedures


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