jiuzhou fan factory direct supply 4-72 centrifugal fan direct drive a- type suction large 九洲风机厂家直供4-72 离心通风机 直接传动A式 吸力大

Type 4—72Centrifugal VentilatorSuitable for indoor ventilation in general factories and large buildings, it conveys air and other non-natural gases that are harmless to humans and non-corrosive to steel. The B4—72 type fan can convey flammable and volatile gases, but the temperature must not exceed 80°C.
No. 2.8–7 are manufactured in one type upon production. The user unit can be installed in the required position according to requirements; no indication is needed during ordering. For No. 2.8, the air outlet adjustment range is 0° to 225°, with an interval of 45°. For No. 3.2–6, the air outlet adjustment range is 0° to 225°, with an interval of 22.5°. For No. 8–12, the air outlet adjustment range is 0° to 225°, with an interval of 45°. For No. 16 and 20, the air outlets are set in three fixed positions: 0°, 90°, and 180° and cannot be adjusted; this must be specified during ordering.
The transmission methods of the fan include four types: A, B, C, and D.
In the Type 4–72 fans, No. 2.8–7 uses Type A drive mechanism. This series of fans features high efficiency, low noise, stable pressure curves, and a wide range of applications. They are primarily used for indoor ventilation and air exchange in factories, mines, enterprises, sports venues, theaters, basements, hotels of all sizes, restaurants, shopping centers, and large buildings, as well as for cooling and dust removal. They can also be integrated with various mechanical equipment for gas circulation. The medium transported is air and other gases that are non-flammable, harmless to humans, and non-corrosive; the B4-72 uses explosion-proof motors and can be used for ventilation of flammable and volatile gases. The gas temperature must be ≤80°C, there should be no viscous substances, dust, or solid impurities at ≤150mg/m³.