Progressing Cavity Pumps, also known as eccentric screw pumps or helical rotor pumps, belong to the progressive cavity pump category. Inside the stator is a spiral-shaped helical rotor which, through its rotation, creates cavities through which the fluid moves. The volume of these cavities determines the volumetric flow of the pump and is directly proportional to the rotational speed of the rotor. The speed of rotation is calculated based on the operating conditions and determines the pump size. Usually, larger pumps have a lower rotational speed, while smaller pumps have a higher speed. By using frequency inverters or motors with integrated frequency inverters, the rotation speed can be controlled and regulated. Translated with www.DeepL.com/Translator (free version)

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