Specifications
4-72 Centrifugal Fan is applicable to carry out air mixture with woodiness, fiber or dust etc. 4-72 duct fan for duct equipment/Industrial blower/centrifugal fan 
Main technical data:
| Type | Speed(r/min) | Pa | Q(m3/h) | Power(KW) |
| 4~72NO3A | 2900 | 122-81 | 1785-3362 | 1.5 |
| 4~72NO3.5A | 2900 | 167-111 | 2385-5338 | 2.2 |
| 4~72NO4A | 2900 | 218-145 | 4231-7968 | 3 |
| 4~72NO4.5A | 2900 | 275-183 | 6025-11346 | 5.5 |
| 4~72NO5A | 2900 | 340-226 | 8265-15563 | 7.5 |
| 4~72NO6A | 1450 | 122-81 | 7141-13447 | 11 |
| 4~72NO8C | customers requirement | 335-223 | 21001-39567 | 22/37 |
| 4~72NO10C | customers requirement | 273-182 | 29638-55813 | 37/45 |
| 4~72NO12C | customers requirement | 2640-1880 | 30880-46880 | 55/75 |
| 4~72NO14C | customers requirement | 1124-2148 | 77040-121290 | 55/75 |
The above parameters have not enough detailed if doubt please call letter from the advisory.
Work Principle:
Fan consists of impeller, inlet wind tuyere, machine frame, transmission part etc.
Motor connects directly or works transmission part so as to impeller to rotate at a high speed. Rotating mechanical energy is converted to gas pressure energy and kinetic energy, and transport the air out through machine frame.Function:
Centrifugal fan is applicable to carry out air mixture with woodiness, fiber or dust etc.