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Smith PBL/PBN series boilers
Installing this on a 120V AC circuit will result in immediate failure of the internal solid-state components
making it suitable for vertical motor configurations often found in pump systems
ensuring correct shaft alignment and mounting
Siemens Building Technology 331-2905 Actuator 322838-753 Smith PBL/PBN series boilersThe Siemens Building Technology 331 2905 is a professional grade No. 4 Pneumatic Damper Actuator engineered for the gradual or positive control of outdoor air, return air, and exhaust dampers. As a veteran preferred HVAC pneumatic actuator, this unit features a rugged all metal body and a 4 inch stroke designed for longevity in demanding ventilating systems and terminal units like unit ventilators and mixing boxes. This model is equipped with an
