Siemens 331-4314 DAMPER ACT, PNEU, NO. 3, 2-3/8" STROKE, 3-7 PSI, FIXED BRACKET MOUNT, CLEVISSiemens 331 4314 Damper Act, Pneu, No. 3, 2 3 8" Stroke, 3 7 psi, Fixed Bracket Mount, Clevis This 331 Number 3 Pneumatic Damper Actuator with clevis is a rugged, metal fabricated device that provides gradual or positive actuation of HVAC dampers. This actuator has a nominal spring range of 3 to 7 psi, is fixed bracket mounting and has an ozone resistant rolling rubber diaphragm. This actuator has an air connection of 1 8" NPT female with a straight
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