... How it works:The impeller rotates friction free withine the pump casing.A rotating liquid ring seals the impeller on ... hence to a considerable reduction in the performance of the pump. Elmo Rietschle liquid ring pumps, however, meet these challenges ... Applicantion:1,Asphalt-thickening machines(steamrollers)2,Corrosion protection for water pipes3,Drying systems4,Dust extraction in the mining industry5, ...