It is used for wind speed control and air volume regulation. It features simple operation and compact structure, and can be directly mounted on the air duct with both ends connected to air ducts.
Technical Parameters
| Air duct size | Φ150 | Φ200 | Φ250 | Φ300 | Φ350 | Φ400 | Φ450 | >450 |
| Valve body thickness (L) | 170 | 200 | 250 | 300 | 300 | 350 | 400 | 210 |
