A peristaltic pump is a displacement pump.
The fluid is contained in a tube in the round pump housing and is driven by rotors that press the tube flat. Pressure is built up in front of the rotor and the elasticity of the tube creates a vacuum behind the rotor. The pressure pushes the liquid out of the tube and the vacuum sucks in the new liquid. Peristaltic pumps are used in various industries and applications. For example, food, mining, chemistry, fishing and agriculture, but also onshore and offshore, in anaerobic digestion/biogas and in the production of concrete and paint.