Siemens Building Technology 331-2968 Actuator 321894-709 glass-filled polycarbonate housing and a

glass-filled polycarbonate housing and a silicone diaphragm

This 115V fan motor operates at a nominal 1075 RPM

minimizing vibration and maintaining critical alignment under heavy loads

Reliable Performance: Features a rugged diaphragm set for vertical mounting and high-quality 1/4" spade electrical connections for secure wiring

Siemens Building Technology 331-2968 Actuator 321894-709 glass-filled polycarbonate housing and aAs a veteran HVACR technician, you know the reliability of the Siemens 331 2968 No. 4 pneumatic actuator. This pneumatic damper actuator is built with a rugged, all metal body designed for the positive or gradual actuation of HVAC dampers in mixing boxes, terminal units, and unit ventilators. Featuring a 4 inch stroke and an effective diaphragm area of 17. 9 sq. in., this unit provides the necessary thrust for precise air volume control. The 8 13 psi