Zonex Galvanized Steel Round Low Pressure Zone Damper - 6" Dia

Zonex Systems round low-pressure zone dampers can be used for systems up to 5 tons with a maximum differential static pressure of 0. 5”. These are two positions, spring open, power close dampers for very simple operation. Round damper sizes 9 inches and under are manufactured from 24 gauge galvanized steel. Sizes 10”, 12”, 14” and 16” are made from 20 - 22 gauge steel. All sizes are designed with rolled-in stiffening beads for superior rigidity. The damper pipe is furnished with one crimped end and one straight end for easy installation. A hat section supports a synchronous 24V AC 60Hz 12VA motor and terminal board. The motor is designed for continuous full-stall operation. Special winding and heavy-duty gearing provide for long motor life and easy spring open operation. A cross pin on the motor shaft provides positive direct drive to the damper blade shaft without a coupling or set screws, allowing for a quick and easy motor change if required. Motor drive time from full open to full close is 30 seconds. Since this is a spring open damper, in the event of power failure, the damper fails to the full open position.