Round Dampers

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Spiral ducts need round dampers. This category includes control, balancing, and backdraft dampers for round ductwork.

Products 16

Products

A56

6.5" Deep Aluminum Airfoil Control Damper with Transition

A56

Maximum Velocity (FPM): 2000 fpm
Max Static Pressure: 6 .in w.g. @ 1000 fpm
Pressure Drop: .04 in. w.g. @ 1000 fpm

Material Options: Extruded Aluminum 6063 Alloy
Blade Type: Airfoil Blade
Blade Action: Parallel / Opposed
Frame Shape: Round
Pressure Drop: .04 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 2000 fpm (FPM)

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A70

7.5" Deep Round Galvanized Steel Damper

A70

Maximum Velocity (FPM): 2000 fpm
Max Static Pressure: 4 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: Galvanized Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 2000 fpm (FPM)
Temperature Rating (°F): -35 °F to 180 °F

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A70GL

7.5" Deep Round Galvanized Steel Damper with Honeywell Actuator

A70GL

Maximum Velocity (FPM): 1500 fpm
Max Static Pressure: 1 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: Galvanized Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 1500 fpm (FPM)
Temperature Rating (°F): 250 °F

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A70R

7.625" Deep Round Single Blade Galvanized Steel Damper with Nine Position Locking Hand Quadrant

A70R

Maximum Velocity (FPM): 1500 fpm
Max Static Pressure: 1 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: Galvanized Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 1500 fpm (FPM)
Temperature Rating (°F): 250 °F

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A75

7.5" Deep Round Aluminum Damper

A75

Maximum Velocity (FPM): 2000 fpm
Max Static Pressure: 4 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: Extruded Aluminum 6063 Alloy
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 2000 fpm (FPM)
Temperature Rating (°F): -35 °F to 180 °F

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A80

7.5" Deep Round Stainless Steel Damper

A80

Maximum Velocity (FPM): 2000 fpm
Max Static Pressure: 4 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: 304 Stainless Steel, or 316 Stainless Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 2000 fpm (FPM)
Temperature Rating (°F): -35 °F to 180 °F

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A85

6.5" Deep Aluminum Pin-Lock Control Damper with Transition

A85

Maximum Velocity (FPM): 2000 fpm
Max Static Pressure: 4 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: Extruded Aluminum 6063 Alloy
Blade Type: Pin-Lock
Blade Action: Parallel / Opposed
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 2000 fpm (FPM)

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AC112

Round Single Blade Volume Control Damper

AC112

Maximum Velocity (FPM): 1500 fpm
Max Static Pressure: 1 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: Galvanized Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 1500 fpm (FPM)
Temperature Rating (°F): 250 °F

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A260DW

Dual Wall Insulated Round Single Blade Volume Control Damper

A260DW

Maximum Velocity (FPM): 3000 fpm
Max Static Pressure: 6 .in w.g. @ 1000 fpm
Pressure Drop: .012 in. w.g. @ 1000 fpm

Material Options: Extruded Aluminum 6063 Alloy, 304 Stainless Steel, 316 Stainless Steel, or Galvanized Steel
Blade Type: True Round Single Thickness (UVU)
Blade Action: Single
Frame Shape: Round
Pressure Drop: .012 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 3000 fpm (FPM)

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A388

Galvanized Steel Round Backdraft Damper

A388

Maximum Velocity (FPM): 3000 fpm
Max Static Pressure: 1 .in w.g. @ 1000 fpm
Pressure Drop: .05 in. w.g. @ 1000 fpm

Material Options: Galvanized Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .05 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 3000 fpm (FPM)
Temperature Rating (°F): -35 °F to 180 °F

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A389

Aluminum Round Backdraft Damper

A389

Maximum Velocity (FPM): 3000 fpm
Max Static Pressure: 1 .in w.g. @ 1000 fpm
Pressure Drop: .05 in. w.g. @ 1000 fpm

Material Options: Extruded Aluminum 6063 Alloy
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .05 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 3000 fpm (FPM)
Temperature Rating (°F): -35 °F to 180 °F

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A390

Stainless Steel Round Backdraft Damper

A389

Maximum Velocity (FPM): 3000 fpm
Max Static Pressure: 1 .in w.g. @ 1000 fpm
Pressure Drop: .05 in. w.g. @ 1000 fpm

Material Options: 304 Stainless Steel, or 316 Stainless Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .05 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 3000 fpm (FPM)
Temperature Rating (°F): -35 °F to 180 °F

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A580-BD

10" Deep Round Industrial Backdraft Damper

A580BD

Maximum Velocity (FPM): 6000 fpm
Max Static Pressure: 8 .in w.g. @ 1000 fpm
Pressure Drop: < .1 in. w.g. @ 1000 fpm

Material Options: 304 Stainless Steel, 316 Stainless Steel, or Fabricated Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: < .1 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 6000 fpm (FPM)
Temperature Rating (°F): 200 °F

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AC580

Industrial Single Blade Round Control Damper

AC580

Maximum Velocity (FPM): 10000 fpm
Max Static Pressure: 12 .in w.g. @ 1000 fpm
Pressure Drop: < .1 in. w.g. @ 1000 fpm

Material Options: 304 Stainless Steel, 316 Stainless Steel, or Fabricated Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: < .1 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 10000 fpm (FPM)
Temperature Rating (°F): 250 °F

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AC581

Industrial Heavy Duty Round Control Damper

AC580

Maximum Velocity (FPM): 10000 fpm
Max Static Pressure: 16 .in w.g. @ 1000 fpm
Pressure Drop: < .1 in. w.g. @ 1000 fpm

Material Options: 304 Stainless Steel, 316 Stainless Steel, or Fabricated Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: < .1 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 10000 fpm (FPM)
Temperature Rating (°F): 250 °F

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AC530

Round Single Blade Control Damper with Seals

AC530

Maximum Velocity (FPM): 3000 fpm
Max Static Pressure: 6 .in w.g. @ 1000 fpm
Pressure Drop: .013 in. w.g. @ 1000 fpm

Material Options: Galvanized Steel
Blade Type: Single Thickness Blade
Blade Action: Single
Frame Shape: Round
Pressure Drop: .013 in. w.g. @ 1000 fpm
Maximum Velocity (FPM): 3000 fpm (FPM)
Temperature Rating (°F): 250 °F

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