liquid pump filling machine is a type of liquid filler measuring the quantity by the pump,the most popular two types are the peristaltic pump and rotor pump. the peristaltic pump is mostly application for the thin liquid filling, mostly application in the fields of phmarceuticals, such as the eye drops,ear drops, syrups, oral liquid and so on; and the rotor pump is mostly application for the viscous liquid, such as shampoo, cream , sauce ,jam and grease.Both of those pumps are driven by motor, Npack using servo motor to driven the pump to ensure the filling accuracy, each pump driven by one individual servo motor, which can gurantee the accuracy , filling speed and easy adjustment, efficient and acceptable by users. 

we can compare the two types of pumps, then you can easy to understand and choosing accordingly.