How are a rotary lobe & circumferential piston pumps different from centrifugal pumps?
Centrifugal pumps can transfer large volumes of liquid, but efficiency and flow decrease rapidly as pressure and/or viscosity increases. Rotary pumps and circumferential piston pumps, on the other hand, offer higher efficiency wherein they move a consistent amount of liquid at a constant speed. They are gentle on liquids and have extremely low shear characteristics across a wide range of product viscosities.