Inkqubo yokubonelela ngamanzi omlilo ococekileyo i-PVK idibanisa ukulula, ukusebenza kakuhle, kunye neendleko-ezisebenzayo kunye neempawu eziphambili ezifana nokutshintshwa kwamandla amabini. Izinketho zayo zepompo eziguquguqukayo kunye netanki yoxinzelelo lwe-diaphragm ehlala ixesha elide yenza kube yinto efanelekileyo yokuqinisekisa ukunikezelwa kwamanzi okuthembekileyo kunye nokusebenza kakuhle komlilo kwiindawo ezahlukeneyo.