Umzimba okhipha amanzi wakhiwa i-axis eyisikulufu enamapuleti okulungisa nanyakazayo agqagqene, njengoba ububanzi bangaphakathi be-screw axis bukhulu kunepuleti elinyakazayo, ipuleti elinyakazayo lenza ukunyakaza okuyisiyingi nge-screw axis ukuvimbela ukuvala.Isikhala phakathi kwamapuleti okulungisa kanye nokunyakaza siba sincane futhi sibe sincane ngasendleleni yokuphuma kodaka.Ngemuva kokugxila kwamandla adonsela phansi, i-sludge ithuthelwa ezingxenyeni zokuphelelwa amandla kwamanzi, ikhipha amanzi ngaphansi kwengcindezi yangaphakathi ye-outlet back plate.