Model AC-22R

Round Control Damper
Triple-V Blade

AC-22R control damper employs a sturdy round frame and triple-V blades for automatic air control and manual balancing in low to medium pressure and velocity applications.

Standard Construction

Frame: 3" x 16 ga. (76 x 1.6), 12 ga (2.8) for D>24" (610) galvanized steel.
Blades: 16 ga. (1.5) galvanized steel triple-V.
Axles: 1/2" (13) diameter plated steel.
Linkage: Concealed in frame.
Bearings: Synthetic.
Control Shaft: 1/2" x 3" (13 x 76) drive axle. 
Minimum Size: 12" Ø (305 Ø).
Maximum SIze: 36" Ø (914 Ø)

Ratings

Maximum System Velocity: 1500 fpm (7.7 m/s)
Maximum System Pressure: 2.5 in. wg. (0.62 kPa) 
Temperature: -25^oF to 180^oF (-32^oC to 83^oC)