Siemens 331-2906 Damper Actuator 4" Stroke 5-10 PSI, Pivot Mount

The Siemens 331-2906 Damper Actuator is an robust, reliable pneumatic actuator to use for precise dampers control for HVAC systems. No.4 is model 4" stroke that operates within a spring range is 5 to 10 PSI and positions damper accurately and responsively. The actuator's pivot mount provides a versatile installation, accommodating a wide variety of damper configurations and applications. Air pressure is used to move the damper blade of the actuator which controls airflow within the HVAC system. The damper position is adjusted by the actuator based on the change of air pressure within the specified range, so as to achieve the better airflow control. This ability of this type to maintain the exact balance between indoor air quality and temperature greatly contributes to the general efficiency of a HVAC system.