Round Motorized Control Damper, 2-Wire - 6" Diameter - Normally Closed
Robertshaw® DAR Series Round Control Dampers are designed to be used in zone control system applications and for the control of air flow in any duct system. Dampers are designed to work with pressure systems up to 1.2" W.C. All DAR damper shells are constructed of rolled 26 gauge galvanized steel with stiffening ribs to maintain rigidity. A single 18 gauge offset blade is attached to a .375" one-piece steel shaft which is attached to nylon bearings for smooth operation. DAR dampers are powered by a single stall type motor providing 55 to 75 inch ounces of torque. Motor mounts are welded to the damper shell. Minimum blade adjustment is provided by an external locking mechanism. Dampers are spring open/power close and contain a “Lost Motion” braking system that prevents backlash and shock to the motor gears, bearings and blade shaft when the damper is driven open by the spring return. Damper size will vary based on system static pressure. Refer to duct calculator for proper sizing.
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