331-3012 | Damper Actuator, Pneu No 6, 4" Stroke, 3-8psi, Integ Pivot, Ext Shaft | Siemens

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 3 to 8 psi, is mounted on a plate which allows extended shaft mounting and has a replaceable diaphragm. This actuator has a 1/8" NPT female air connection and parts for frame mounting.