Performance Description: 

-. Model 4-72 Centrifugal Ventilator may be used for the indoor ventilation in ordinary factory or in large-scale building.
-. B4-72 Conveys air or other gas which may not self-ignite,do no harm to human body or is not corrosive to the steels.
-. Model B4-72Centrifugal Ventilator may be used for the ven tilation of gas which is flammable and volatile.
-. No glutinous matter is allowed in the gas.
-. The dust or grain matter is no more than 150mg/m3.
-. The gas temperature is no more than 80ºC.

-. The performance, spare parts and installation size of Model B4-72 blower are the same as Model 4-72,and may be selected according to its sample book.
-. This blower structure is principally the same as Model 4-72 .
-. The motor should select YB series corresponding to the Y series in the chart.
-. Model F4-72 blower adopts stainless steel for conveying corrosive gas,and its perfor mance and installation are the same as Model 4-72.

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