Rotary pumps are high-pressure, compact devices that deliver a continuous flow of liquid in a wide range of applications across a wide range of industries. Rotary gear pumps transport nonabrasive or nonparticulate viscous liquids with a continuous, near-pulseless flow. High-pressure rotary vane pumps transport diesel fuels and light oils. In food service applications such as commercial fat fryers, roller pumps filter and transport cooking oil. Vane pumps that dispense liquids from soda fountains or pull shots from espresso machines are known as beverage pumps.