Model AC-81R

Industrial Control Damper
Single Blade - Round

AC-81R control damper employs a rugged round channel frame and a single round blade for automatic air control and manual balancing in medium to high pressure and velociy applications.

Standard Construction

Frame: Galvanized steel channel.
Blades: Galvanized steel.
Axles: Plated steel.
Bearings: Bronze.
Control Shaft: 6" (152) long round drive axle.
Minimum Size: 4" Ø (122 Ø)
Maximum Size: 60" Ø (1524 Ø)

Ratings

Leakage: 54.0 cfm/ft² @ 10 in. wg. (0.28 m³/s/m² @ 2.5 kPa) with low leakage seals
                 50.0 cfm/ft² @ 8 in. wg. (0.26 m³/s/m² @ 2.0 kPa) with low leakage seals
                 35.0 cfm/ft² @ 4 in. wg. (0.18 m³/s/m² @ 1.0 kPa) with low leakage seals
                 18.0 cfm/ft² @ 1 in. wg. (0.09 m³/s/m² @ 0.25 kPa) with low leakage seals

Temperature: -25^oF to 250^oF (-32^oC to 121^oC)