Siemens 331-4812

Damper Actuator, Pneu, Number 3, 2-⅜” Stroke, 8-13 psi, Integral Pivot Mount

This 331 Number 3 Pneumatic Damper Actuator is a rugged, metal-fabricated device that provides gradual or positive actuation of HVAC dampers. This actuator has a nominal spring range of 8 to 13 psi, has integral pivot mounting and an ozone-resistant rolling rubber diaphragm. This actuator has an air connection of ⅛” NPT female with a straight dual barb fitting for ¼” OD tubing.

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