reverse ventilation fan

Reverse ventilation fans are engineered to change airflow direction either by reversing motor rotation or through a damper system, enabling bidirectional ventilation for processes requiring periodic flow reversal or purge cycles.

These fans are available in axial or centrifugal designs, with reversible-pitch blades or motor-driven reversible rotation. Flow capacities range from 5,000 to 80,000 CFM at moderate pressures.

Integration with PLC or VFD control enables automated direction switching based on process schedules or sensor signals. This flexibility supports applications such as dust cleaning cycles, system purges, and emergency smoke control.

Constructed with robust housings, sealed bearings, and quick-open access panels, reverse ventilation fans facilitate safe operation and convenient maintenance in industrial and mining environments.