Model Y5-47 centrifugal boiler draft fan is of the latest design to fit for industrial boiler(1-20tons/hr) burring various coals and equipped with smoke prevention and dust control devices,which has a maximum efficiency up to 89.5% and comes with water-cooling integral bearing block and an air volume throttle for flexible varing of air volume and wind direction .It can be used for boilers of similar inlet condition and proper performances,but the temperature shall not exceed 250.In case an optional vibration absorber is available ,the fan may be mounted on a concrete floor without the need for need forholding-down bolts.