... ,German technology 4,Ex stock Parameters:Performance:How it works:The impeller rotates friction free withine the pump casing. ... :1,Asphalt-thickening machines(steamrollers)2,Corrosion protection for water pipes3,Drying systems4,Dust extraction in the mining industry5, ... removing fat from particies in hydrocarbons11,Systems to lower the water table Show: L-series liquid ring vacuum pump,ceramic ...