CD-80 Series industrial-duty control dampers have been designed to handle velocities to 6,000 feet per minute of air and differential pressure to 20 inches water gauge. They are offered in a single-thickness blade design and are available in either opposed- or parallel-blade configurations. According to the manufacturer, the opposed-blade design offers optimum airflow control for mixing air and face and bypass applications; the parallel-blade design is recommended for varying pressure drop conditions. These units are constructed of galvanized steel with channel frames. The products are backed by a five-year warranty.
Pottorff, div. of PCI Industries, 2824 N. Sylvania Ave., Fort Worth, TX 76111; 817-831-7038; 817-831-3110 (fax); www.pottorff.com.