A peristaltic pump operates by compressing the hose or tube with a rotary cam. The liquid in the tube gets squeezed along the tube creating a pulsed flow. The magnitude of the pulse is system dependent and is often not detected.

 

Peristaltic pumps are generally used for low pressure transfer & dosing duties. For example, tranfering dirty waste water to a settling pond or drain. They can handle relatively large solids - the pumps have been used for transfering whole fish suspended in water previously, without damaging the fish. The smaller pumps in the range are often used for dosing detergent into washing plants, or chlorine into swimming pools.

Peristaltic pumps come into their own when the liquid's viscosity is <3.5cP and there is no compressed air available.

 

Verderflex also produce a range of cased scientific pumps for laboratory or pharma applications. The washdownable units are fully programable and  certain models can be intergrated into the building control system.