The Barber Colman N800-4408 is a high-quality replacement spring designed specifically for use with the M574 series pneumatic actuators. This component is essential for maintaining the proper spring return function of the actuator, ensuring reliable, fail-safe operation in HVAC and industrial damper or valve control systems. Built to factory specifications, the N800-4408 provides consistent tension and long service life under repeated cycling conditions.
Technical Specifications
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Model: N800-4408
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Type: Replacement Spring
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Compatible With: M574 Series Pneumatic Actuators
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Application: Internal spring return mechanism
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Material: High-tension steel (industrial-grade)
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Function: Provides spring return force for actuator positioning
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Condition: New
Key Features
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Designed specifically for Barber Colman M574 actuators
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Restores spring return performance to original specifications
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Manufactured from durable materials for long-term use
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Simple replacement to extend actuator life without full unit replacement
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Critical for safety and proper modulation in pneumatic systems
Compatible Applications
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HVAC damper and valve actuators (M574 series)
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Commercial ventilation and zoning systems
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Industrial process control equipment
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Spring-return air control systems requiring positive positioning
Installation & Maintenance Notes
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Ensure actuator is properly depressurized before spring replacement
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Follow manufacturer’s guidelines for disassembly and spring insertion
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Inspect actuator housing and seals while spring is being replaced
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Test actuator movement and return function after installation
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Always use genuine replacement parts for best compatibility and performance
We ship this product worldwide! Delivery is normally stock.
Request a Quote now or call us at 1-800-755-2883 for expert assistance