forced reverse ventilation fan

Forced reverse ventilation fans feature reversible impeller pitch or motor rotation to alternate between intake and exhaust modes, providing adaptable airflow control in tunnels, shafts, and confined spaces.

Their robust casings and dynamically balanced impellers handle flow rates of 10,000–100,000 CFM at pressures up to 3 kPa. Explosion-proof options ensure safe operation in hazardous zones.

Integrated variable frequency drives (VFDs) and PLC controls enable automated direction switching based on process requirements or emergency scenarios, such as smoke extraction during fire events or pressurization to prevent ingress of contaminants.

Maintenance-friendly features include split-casing impeller access, external lubrication ports, and remote diagnostic sensors. Forced reverse ventilation fans deliver versatile, reliable air management for dynamic industrial and mining environments.