The roof ventilator is mainly used for the indoor ventilation and air-exchange in the architectures such as petroleum,chemical,textile,metallurgy,mechanical factory houses,office,experimental room,warehouse etc. It can adapt to different structural forms and use reqiuremenis from various buildings.It can be installed in the roof or wall. When the operatingmedia temperature is 25oC,the relative humidty should not be more than 90%. The dust continue ent in the media (including solid,impurity)should not exceed 100mg/m3. This fan is mainly composed of the paddle-wheel,wind tube, nozzle button, motor and other fittings.The paddle-wheel adopts axial-flow fan with wxtremely large air volume,The nozzle button and base utilize the fiberhlass reinforced plastics with light weight, high indensity, anti-corrosion.It has the features of pleasing appearance,rain & wind resistance. FWT4-72 roof ventilator can be used to convey the corrosive gas, its performances and parameters are the same as WT 4-72.
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