Best Choice SCHNEIDER ELECTRIC MK-3121 Pneumatic Damper Actuator – Adjustable Stroke – Barber Colman

The Schneider Electric MK-3121 Pneumatic Damper Actuator, originally from Barber Colman, is designed for precise airflow control in HVAC systems. This actuator features a spring range of 8 to 13 psi and an adjustable stroke between two to four inches, providing flexibility across various applications. When air pressure is lost, the spring mechanism retracts the actuator shaft, ensuring the system’s safety and efficiency. It supports a maximum air pressure of 30 psig and includes 1/8 inch FNPT air connections for easy integration into existing systems.

• Adjustable stroke for tailored operation
• Spring retraction safety feature
• Robust design suits industrial environments

Product Highlights

Built for durability and reliability, the MK-3121 ensures optimal performance in demanding conditions. Ideal for both new installations and upgrades.

Technical Specifications

• Spring Range: 8 to 13 psi
• Stroke Adjustment: 2 to 4 inches
• Maximum Air Pressure: 30 psig
• Air Connection: 1/8 inch FNPT