Heavy-Duty Exhaust Fan for Fire Smoke Control in Tunnels

Heavy-Duty Exhaust Fan for Fire Smoke Control in Tunnels. Anti-corrosion & Rust-proof The casing surface of the jet fan is treated for anti-corrosion and rust resistance, coated with at least two layers of high-temperature resistant primer and topcoat. Low Noise Every impeller passes dynamic balance calibration for quiet and stable operation. Silencers with the same length as the impeller diameter are installed on both ends of the fan body. Easy Maintenance Direct drive design with no vulnerable parts for low maintenance cost. Extended lubricating oil pipes lead the motor grease nipple out of the fan casing for convenient refueling.