This type of fan has a simple structure, low noise, a wide variety and a wide range of applications. It is mainly used for ventilation in chemical industry, papermaking, metallurgy, textile, factory buildings, tunnels, warehouses, mines, etc.
Technical Parameters:
| Machine number | Speed r/min | Flow rate (m3/h) | Total pressure Pa | Power kw |
| 2.8 | 2900 | 1224-2778 | 186-128 | 0.12-0.37 |
| 1450 | 613-1392 | 32-46 | 0.025-0.04 |
| 3.15 | 2900 | 1944-4155 | 247-170.1 | 0.180-0.55 |
| 1450 | 972-2078 | 61.7-42.5 | 0.025-0.09 |
| 3.55 | 2900 | 2783-5951 | 313.6-216.1 | 0.370-1.1 |
| 1450 | 1394-2981 | 78.4-54 | 0.040-0.120 |
| 4 | 2900 | 3980-8500 | 398.2-274.3 | 0.75-2.2 |
| 1450 | 1993-4261 | 99.5-68.6 | 0.09-0.250 |
| 4.5 | 1450 | 2838-6067 | 126-86.8 | 0.12-0.37 |
| 5 | 1450 | 4289-8712 | 164.6-112.5 | 0.25-0.75 |
| 960 | 2839-5768 | 71.8-49.1 | 0.37 |
| 5.6 | 1450 | 6025-12239 | 206-140.9 | 0.37-1.1 |
| 960 | 3989-8103 | 90.3-61.8 | 0.37 |
| 6.3 | 1450 | 8579-17426 | 260.7-178.3 | 0.75-2.2 |
| 960 | 5680-11534 | 114.3-78.2 | 0.37-0.75 |
| 7.1 | 1450 | 12280-24944 | 333.1-226.5 | 1.5-4 |
| 960 | 8130-16514 | 145.2-99.3 | 0.75-1.1 |
| 8 | 1450 | 17567-35682 | 420.3-287.6 | 3-7.5 |
| 960 | 11560-23624 | 184.2-126.1 | 0.75-2.2 |
| 9 | 960 | 16560-33937 | 233.3-159.5 | 1.5-4 |
| 10 | 960 | 22716-46141 | 287.9-197 | 2.2-7.5 |
| 11.2 | 960 | 31914-64825 | 361.1-247 | 4-11 |