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The “One Stop” Source For All Ductwork And Duct Connection Needs
   
 
Butterfly Dampers
Dampers are generally used on air or light dust handling systems.
Gearbox Operated
DIA. LENGTH HOUSING GAUGE BLADE GAUGE LBS.
8" 12" 16 1/4 20
10" 12" 16 1/4 24
12" 12" 16 1/4 30
14" 12" 16 1/4 38
16" 12" 16 1/4 46
18" 12" 16 1/4 50
20" 12" 16 1/4 75
24" 12" 16 1/4 100
30" 18" 16 1/4 175
36" 18" 14 1/4 350
42" 30" 14 1/4 410
48" 30" 14 1/4 465
60" 30" 12 1/4 750
Intermediate sizes also available.
Standard K&B angle ring flanges are furnished on both ends.
When ordering, you must specify if the damper is to be mounted vertically or horizontally.
Air Cylinder or Motor Operated
DIA. LENGTH HOUSING GAUGE BLADE GAUGE LBS.
8" 12" 16 0.25 20
10" 12" 16 0.25 24
12" 12" 16 0.25 30
14" 12" 16 0.25 38
16" 12" 16 0.25 46
18" 12" 16 0.25 50
20" 12" 16 0.25 75
24" 12" 16 0.25 100
30" 18" 16 0.25 175
36" 18" 14 0.25 350
42" 30" 14 0.25 410
48" 30" 14 0.25 465
60" 30" 12 0.25 750
Intermediate sizes also available.
Standard K&B angle ring flanges are furnished on both ends.
Quandrant Operated
DIA. LENGTH HOUSING GAUGE BLADE GAUGE LBS.
8" 12" 16 10 18
10" 12" 16 10 2
12" 12" 16 10 24
14" 12" 16 10 30
16" 12" 16 10 35
18" 12" 16 10 40
20" 12" 16 3/16" 45
22" 12" 16 3/16" 50
24" 12" 16 3/16" 55
Intermediate sizes also available.
Standard K&B angle ring flanges are furnished on both ends.