Self-priming volumetric peristaltic pumps, operating according to the principle of peristalsis, namely for deformation of a resilient tubular element, with relative cyclical variations in volume. Peristaltic pumps operate without valves or seals of any kind, they are therefore ideal for pumping dirty liquids, with a tendency to crystallization, viscous, suspensions and sterile solutions where a contamination with the environment is not admitted. These pumps are also suitable for the transfer or dosing of food liquids, thanks to FDA certified tubes. Key features of this range of pumps: self-priming, reversibility, easy and quick maintenance and sterilization, no stress to the pumped liquid.