Progressing Cavity Pumps: Best Choice for Viscous and Abrasive Fluids Progressing cavity pumps (PCPs) solve fluid handling challenges that centrifugal pumps simply cannot address. How Progressing Cavity Pumps Work A helical metal rotor turns inside a rubber or elastomer stator, creating a series of sealed cavities that move fluid from inlet to outlet. The result is smooth, lo... https://pumps.circor.com/products/progressing-cavity-pumps