... -flow or counter-flow cooling tower. Spec Cooling Tower Fan(Impeller,Blade), fan, cooling fan,Application: Matched with all types of low-noise ... )Fan diameter: 500mm - 9,750mm,2)Air volume: 3,000 - 800,000 m?h3)Air pressure: 120Pa - 250Pa. Cooling Tower Fan(Impeller,Blade), fan ... , cooling fan,