Siemens Building Technology 331-2906 Actuator 322838-752 This unit features a robust

This unit features a robust cast iron housing with a two-bolt base configuration

Constructed with durable internal diaphragms and springs for consistent set-point retention

a different part number or an approved conversion kit is required to ensure safe manifold pressure

Seamless Integration: Specifically calibrated for use with Selectra Series 14 systems and standard Maxitrol mixing tubes

it features an improved sequencing logic to manage the start-up and shut-down delays essential for heat exchanger protection

Siemens Building Technology 331-2906 Actuator 322838-752 This unit features a robustThe Siemens Building Technology 331 2906 Actuator is a heavy duty, No. 4 pneumatic damper actuator engineered for precise control in commercial HVAC systems. This piston type actuator features a 5 to 10 psi nominal spring range and a robust 4 inch stroke, making it a reliable solution for modulating or two position control of outdoor air, return air, and exhaust dampers. Designed with a pivot mount configuration, it reduces binding and mechanical