4-72 Centrifugal Ventilator can convey air and other unnatural but harmless to steel,non-corrosive gas.No adhesive matters are allowded in the air.The dust and hard granulated matters are less than 150mg/m3.The ambient temperature is less than 80 deg C.The fans have a good pneumatic performance.Their features are steady operation,less vibration,high efficiency,long life..There are totally 4 driving types:A,B,C and D type.

This kind of fans are widely used in mining industry,high building,hotels etc to ventilate and air exchange.etc.