Siemens #6 Damper Actuator

Damper Actuator, Pneumatic,. No. 6, 4" Stroke, 3 to 13 psi, Integral Pivot with Pivot Post, Extended. Shaft Kit with Positioning Relay. . This 331 Number 6 Pneumatic Damper Actuator with integral pivot and pivot post. is a rugged, metal-fabricated device that provides gradual or positive. actuation of HVAC and fire/smoke dampers. This actuator has a nominal spring. range of 8 to 13 psi, has a replaceable diaphragm and a 1/8" NPT female. air connection. Also included is an extended shaft mounting kit with parts for. frame mounting