Siemens No. 4 Pneumatic Damper Actuator w/ Pivot Mount, 8-13 psi

The No. 4 Pneumatic Damper Actuator is a totally enclosed pneumatic piston type actuator designed to actuate dampers for ventilating systems, mixing box control, and other applications requiring a large, effective diaphragm area and long stroke. The No. 4 Hesitation Actuator is frequently used to operate the outdoor air damper on unit ventilators. Features: All metal body construction Replaceable, ozone-resistant, EPDM rubber, rolling diaphragm Pivot mounting for extended shaft or frame mounting Fixed bracket mounting Direct front mounting Positioning relay (optional) Forward travel stops (optional) Adjustable hesitation point (hesitation actuator only)