... finished GY6-51 Boiler Induced Draught Fan Wide operation areaGY4-73 Boiler Induced Draught Fan is applicable to the draught system ... be used to the mines ventilation and general ventilation.Flow:15299—680000 cubic meters per hour Total Pressure:553~ ... coal conveyor, slag removal machine, water treatment equipment, exhauster, draught fan ,air blower,feed water pump, valve instrument, crusher, chimney, ...