The 9-19,9-26 series high pressure centrifugal fan is widely applicable for conveying feed, air, non-corrosive and non-hypergolic gas which contains no adhesive substances, Generally speaking, the conveying media temperature should not exceed 80o, the containing dustand hard particle not exceed 150mg/m3. It is fit for the high pressure forced ventilation in the industries such as forging, metallurgy, glass, ceramics, radio, electro-plating, accumulator etc. And the feed conveyance in the processing trades such as grain, forage, mineral powder, plastics and so on.