Good aerodynamic performance; smooth operation, low vibration, high efficiency, and long service life.Indoor ventilation and air exchange for industrial & mining enterprises, large buildings, hotels, and restaurants. For non-flammable, non-toxic, non-corrosive gases only; no sticky substances, dust content <150 mg/m3, gas temperature <80℃.
F4-72:Stainlesssteelor FRP impeller &housing forcorrosivegases;identical performanceanddimensionsto4-72.
B4-72:Cast aluminum impeller with explosion-proof motor for flammable & explosive gas environments.




