emergency ventilation fan

Emergency ventilation fans are high-capacity blowers designed to operate under fire or hazardous conditions, rapidly extracting smoke, heat, and toxic gases to maintain tenable environments during evacuations.

Installed in tunnels, shafts, or building shafts, these fans deliver 50,000–300,000 CFM at pressures up to 8 kPa. Motors and controls are housed in fire-rated, heat-resistant enclosures.

Automatic activation triggers via fire detection systems, and integration with building or mine control ensures fail-safe operation. Variable frequency drives (VFDs) allow rapid ramp-up to full speed and smooth shutdown post-event.

Robust construction, explosion-proof options, and redundant power supplies guarantee reliability when lives depend on airflow performance. Emergency ventilation fans are vital for safety compliance and disaster response planning.