Umatshini wokuzalisa impompo ye-liuquid piston usetyenziselwa ukuzalisa ulwelo olwahlukeneyo kwiibhotile, iitoti, iikomityi, iibhakethi kunye nezinye izitya. Ikwalungele ulwelo lwe-viscous okanye iimveliso ezishinyeneyo zolwelo, njengeoyile yokupheka, ioyile yokuthambisa, isiselo, ijusi, isosi, intlama, ikhrimu, ubusi, ishampu, isicoci, izibulali zinambuzane, kunye nesichumiso soLwalo njl. Ngokomthamo ohlukeneyo wokuzalisa kunye nokuzaliswa komthamo, sineemodeli ezahlukeneyo zomatshini, sinokwenza ngokwezifiso ngokusekelwe kwimfuno ekhethekileyo yomthengi.