Siemens Building Technology 331-2968 Pneumatic Damper Actuator 4 Inch Stroke 8-13 PSI

The Siemens Building Technology 331-2968 is a pneumatic damper actuator designed for HVAC control applications. This reliable actuator provides precise control of damper positioning in commercial building air handling systems.

Key Specifications:

• Actuator Type: Pneumatic (air-operated)
• Model Designation: Number 4
• Stroke Length: 4 inches
• Operating Pressure Range: 8 to 13 PSI
• Action Type: Proportional-to-Motion (P-M)

This spring-return pneumatic actuator delivers consistent performance for damper control in heating, ventilation, and air conditioning systems. The proportional control action ensures smooth, accurate positioning based on the input air pressure signal, making it ideal for variable air volume (VAV) systems and other applications requiring precise airflow control.