Siemens 331-3002 DAMPER ACTUATOR, PNEU NO 4, 4" STROKE, 5-10PSI, INTEGRAL PIVOT, UNIV MT KITSiemens 331 3002 Damper Actuator, Pneu No 4, 4" Stroke, 5 10psi, Integral Pivot, Univ Mt Kit This 331 Number 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 5 to 10 psi, a replaceable diaphragm and an air connection of 1 8" NPT female with a dual barb elbow fitting for 1 4" OD
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Siemens 331-3002 DAMPER ACTUATOR, PNEU NO 4, 4" STROKE, 5-10PSI, INTEGRAL PIVOT, UNIV MT KIT