... Dust Removing Centrifugal Fan 1. ApplicationsModel C4-73 Dust Removing Centrifugal Fan are mainly used in blower fan and draught fan system of ... heat recovery boiler,,,,and various boilers. 2.Structure Centrifugal fan mainly consist of impeller,case,air inlet,adjusting ... °,45°,90°,135°,180°,225°4. Product Characteristics-Optional Parts: flexible coupling, variable inlet vane damper, damper, electric ...