Siemens Building Technology 331-2906 Actuator 326058-757 Contractors should verify the WC

Contractors should verify the WC (Water Column) ratings against the equipment nameplate to ensure exact pressure calibration

This is the 319825-402 cover plate only

Common Questions: How do I troubleshoot a lockout on this relay

The sensing bulb should be mounted on a horizontal section of the suction line

Does this fan blade require balancing before installation

Siemens Building Technology 331-2906 Actuator 326058-757 Contractors should verify the WCThe 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