Ring Blower HITACHI DN Series a high-pressure fan can both suction and blow air simultaneously. It is suitable for various applications such as aerating fish ponds, shrimp ponds, wastewater treatment, pneumatic material conveying, and medical applications, among others.
| Model | Phase | Voltage | Poles | Max capacity 50/60 Hz |
| VB-004S-DN | 1 | 220 | 2 | 1.4 / 1.8 |
| VB-007S-DN | 1 | 220 | 2 | 2.2 / 2.5 |
| VB-004-DN | 3 | 220/380 | 2 | 1.4 / 1.8 |
| VB-007-DN | 3 | 220/380 | 2 | 2.2 / 2.5 |
| VB-020-DN | 3 | 220/380 | 2 | 1.7 / 2.2 |
