Siemens 332-3011 DAMPER ACTUATOR, PNEU NO. 6, 4" STROKE, 3-13PSI, INTEGRAL PIVOT, POS RELAYSiemens 332 3011 Damper Actuator, Pneu No. 6, 4" Stroke, 3 13psi, Integral Pivot, Pos Relay 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 8 to 13 psi, has a replaceable diaphragm and a 1 8" NPT female air connection. Also included is an extended shaft mounting kit
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