Applications
1. Our 4-27 model centrifugal fan is usually used for indoor ventilation in factories and large buildings. This centrifugal ventilation fan is able to transmit air and other gasses that are nonflammable, harmless to human health and non-corrosive to steel.
2. The B4-72 model centrifugal fan performs well when dealing with nonflammable volatile gasses that contain no viscous materials. It is not suitable for gasses with a temperature higher than 80ºC, or gasses with dust and hard particle amounts exceeding 150mg/m³. The B4-72 ventilation blower has the same basic structure, performance and foundation size of the 4-72 model ventilation fan. The No.2.8-6A exhaust fan uses the B35 electric motor with flange plates and supporting feet.
3. Our F4-72 model centrifugal fan is a stainless steel fan designed to deliver corrosive gasses. Its performance and foundation size are the same as those of the 4-72 model centrifugal ventilation fan.

Performance Characteristics
1. Rotation Mode
When seen from the front of the motor, the centrifugal fan whose impeller rotates clockwise is a right-handed fan, as denoted by “right.” The industrial centrifugal fan whose impeller blades rotates counterclockwise is known as the left handed fan, as denoted by “left.”

2. Air Outlet Position
The air outlet position on the exhaust fan is represented by the air outlet angle. The 4-72 model centrifugal fan and the No.2.8-6 fan are made in the same structure. Customers are to install them according to their production needs and don’t need to detail that when placing the order. The adjustable scope for the air outlet of the No.2.8 industrial exhauster is 0-22.5º with a space of 22.5º. The adjustable scope for the air outlet of the No.8-12 exhaust fans are 0-22.5º with a space of 45º. The outlet position of the No. 16 and 20 ventilation fans are fixed angles of 0, 90 or 180º. Please specify this when placing the order.

3. Transmission Mode
There are four transmission modes available for the centrifugal fans: A, B, C and D. Among the 4-17 model ventilation fans, the No. 2.8-6 fan uses the A transmission, the No. 8-12 fan uses both C and D transmission, and the No.16-20 fan uses B transmission.

Centrifugal fan in the complete feed pellet production line for shipment