Low Leakage Control Damper
Single Round Blade
CD-25R low leakage control damper employs a sturdy round frame and a single round blade for automatic air control and manual balancing in medium to high pressure and velocity applications.
Frame: 12" x 20 ga. (305 x 1.0) galvanized steel.
Blades: 14 ga. (2.0) equivalent galvanized steel - round.
Axles: 1/2" (13) diameter plated steel.
Bearings: Synthetic.
Seals: Polyethylene blade edge seals.
Control Shaft: 1/2" x 3" (13 x 76) round drive axle.
Minimum Size: 6" Ø (152 Ø)
Maximum Size: 24" Ø (610 Ø)
Maximum Leakage:
5.5 cfm/ft2 @ 10 in. wg. (0.028 m3/s/m2 @ 2.5 kPa)
5.0 cfm/ft2 @ 8 in. wg. (0.026 m3/s/m2 @ 2.0 kPa)
3.3 cfm/ft2 @ 4 in. wg. (0.017 m3/s/m2 @ 1.0 kPa)
1.5 cfm/ft2 @ 1 in. wg. (0.008 m3/s/m2 @ 0.25 kPa)
Temperature: -25oF to 180oF (-32oC to 83oC)
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