... Brand (OEM Allowed) 2,Certificates:CE,UL,RoHS,CCC 3,German technology 4,Ex stock Parameters: Item No.Motor(IP55 ... How it works:The impeller rotates friction free withine the pump casing.A rotating liquid ring seals the impeller on ... Asphalt-thickening machines(steamrollers)2,Corrosion protection for water pipes3,Drying systems4,Dust extraction in the mining industry5,Extracting oil residues6,Exhausts ...