B4-72 series centrifugal ventilator can convey air and other non-hypergolic gas which are not harmful to human body and will not corrode steel materials. It has sound pneumatic performance. The paddle-wheel, pulley have been implemented with strict static and dynamic balancing correction, therefore it has features such as smooth running, low noise, large flow, little vibration and long life. It can be used as ventilation and air-exchange to flammable gas. B4-72 has four rotating means.

The main technical parameters
Type speed(r/min) Power of motor(kw-p) Blow rate (m3/h) Full pa
2.5A 2900 0.75-2 805-1677 792-483
2.8A 2900 1.5-2 1131-2536 994-606
3.2A 2900 2.2-2 1688-3517 1300-792
1450 1.1-4 884-1758 324-198
3.6A 2900 3.2-2 2664-5268 1578-989
1450 1.1-4 1332-2634 393-247
4A 2900 5.5-2 4012-7419 2014-1320
1450 1.1-4 2006-3709 501-329
4.5A 2900 7.5-2 5712-10562 2554-1673
1450 1.1-4 2856-5281 634-416
5A 2900 15-2 7728-15445 3187-2019
1450 2.2-4 3864-7728 790-502
6A 1450 4.0-4 6677-13353 1139-724
960 1.5-6 4420-8841 498-317
6D 1450 4.0-4 15826-29344 1139-724
960 1.5-6 10478-19428 498-317
8D 1450 18.5-4 7968-14773 2032-1490
960 5.5-6 40441-56605 887-651
730 3.0-8 26775-37476 512-376
10D 1450 55-4 40441-56605 3202-2532
960 18.5-6 26775-37476 1395-1104
730 7.5-8 20360-27497 805-637
12D 960 45-6 46267-64759 2013-1593
730 18.5-8 35182-49244 1169-919