332-2973
This 331Number 4 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, a replaceable diaphragm and an air connection of 1/8" NPT female with a dual barb elbow fitting for 1/4" OD tubing. Also included is an universal mounting kit that allows fixed or pivot mounting, this kit contains a positioning relay and parts for frame mounting.
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