Particularly suited to waste gas ducts on bagasse or black liquor plants or where gas contains fibrous particulate which could get caught up on butterfly or louvre damper blades.

These are primarily intended as fan inlet control dampers where, by introducing swirl into the inlet of the fan in the direction of rotation, the fan curve is changed as the damper moves, thus maintaining operation at an efficient point on the fan curve and eliminating the possibility of stalling…

The variations possible for these dampers are virtually infinite. All types can be manufactured as either “open / close” or as control dampers, and in the case of diverter dampers, the blades may be linked and operated by a single actuator or they may be operated individually. Dilution dampers could…