Product   feature :

HTF axial fan is suitable for ventilation and fire control of tall buildings, subway tunnel , underground stores , gymnasia etc.   This fan is set up with double-speed motor, it operates at a low speed normally and used for ventilation.   Once occurrence afire, the fan is automatically transferred into high-speed and discharge smoke by the electric control system, which facilitates safe evacuation of personnel on the first spot.

The transporting medium is air or other non-spontaneous-combustion and non-explosive -combustion air with no harm to human.   The air transferred shall not contain any adhesive material, dust and grain and the concentraction shall not exceed   150mg/m3 when temperature shall not exceed   80℃.   When used for fire control , the fans can run more than 30 minutes continually under the condition that the air and smoke temperature is at   280℃