Circumferential pumps are a type of positive displacement pump that uses a rotating element to displace fluid within a cylindrical cavity. This rotating element, often referred to as a rotor, has a specific profile that creates a series of chambers or pockets that trap and move fluid.

Key Characteristics of Circumferential Pumps:

Positive Displacement: They displace a specific volume of fluid per rotation, making them suitable for applications requiring precise flow rates.

Rotary Element: The rotor is the primary moving component, responsible for fluid displacement.

Cylindrical Cavity: The fluid is contained within a cylindrical cavity, often referred to as a casing.

Various Rotor Profiles: Different rotor profiles can be used to achieve varying levels of flow and pressure.