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Model AC-58
Control Damper
Aluminum Airfoil Blade
The CD-58 control damper employs fully symmetrical aluminum airfoil blades and a rugged aluminum hat channel frame to provide extremely low leakage and exceptional air performance in medium to high pressure and velocity applications.
Standard Construction
Frame: 5" x 1" (127 x 25) 6063-T5 aluminum hat channel 0.125" (3) thick. Low profile head and sill used on sizes less than 13" (330) high.
Blades: 6063-T5 0.070" (1.8) thick heavy duty, dual wall extruded aluminum airfoil. Opposed action.
Axles: 1/2" (13) diameter plated steel hex.
Linkage: Concealed in frame.
Bearings: Synthetic.
Control Shaft: 1/2" x 6" (13 x 152) round drive axle with outboard shaft support bracket and bearing supplied on all single section dampers for field installation. Factory installed 3/4" (19) diameter jackshaft on all multiple section dampers.
Minimum Size: 6" x 5" (152 x 127)
Maximum Size: Single Section: 60" x 74" (1524 x 1880)
Multiple Sections: Unlimited
Ratings
Leakage class:
1A - 3.0 cfm/ft2 @ 1 in. wg. (0.015m3/s/m2 @ 0.25 kPa)
1 - 4.0 cfm/ft2 @ 1 in. wg. (0.020m3/s/m2 @ 0.25 kPa)
1 - 8.0 cfm/ft2 @ 4 in. wg. (0.041m3/s/m2 @ 1.0 kPa)
1 - 11.3 cfm/ft2 @ 8 in. wg. (0.057m3/s/m2 @ 2.0 kPa)
Temperature:
-25oF to 180oF (-32oC to +83oC) with synthetic bearings
-72oF to 275oF (-58oC to +135oC) with stainless bearings