Butterfly/Wafer Dampers

General Information

Effox-Flextor has installed butterfly dampers as small as 6" diameter to as large as 120" diameters and more. Our butterfly dampers can be found in some of the harshest environments where abrasion, corrosion and dust-loading are prevalent.

Butterfly dampers are not as precise as louver dampers for flow control but can be used for modulation when precision is not critical. For more precise flow control applications, opposed multi-blade circular louver dampers can be used.

Drive options

Effox-Flextor has a wide range of drive options from simple shaft mounted pneumatic actuation, to heavy-duty electric and hydraulic actuation with fail safe configurations.

Blade design

Unique design features of the Effox-Flextor butterfly damper include heavy-duty engineered blades and housing to provide maximal resistance to heat stresses, corrosion, metal fatigue and distortion. Effox-Flextor buttefly dampers are available with simple blades, structural blades, thermally compensating blades, and profiled blades. For applications where heat retention is necessary, blades can be insulated.

Seats

Depending on the application, seat configuration can play a major role in the reliability of any damper. Effox-Flextor offers many configurations to meet your application including the FlexClean™ blow-off configuration for high dust-loading environments.