The range of DENA vacuum conveying systems with efficiency from 1,5 to 45 kW, can cover transport distances up to 200 mt and rate flow beyond 6 t/h. The model WX 52 can transfer granular materials over long distances with rate flow up to 100kg/h. It permits air to be separated from the product. The tangential inlet avoids the product to be wasted, thanks to the cyclonic separation of air flux.