Which type of pump is typically used for low pump capacity and nonabrasive materials?

The correct choice is a roller pump, which is specifically designed for low capacity applications and is particularly effective when handling non-abrasive materials. It operates by using rotating rollers that compress a flexible tube, creating a vacuum that draws fluid into the pump and then expels it through the outlet. This design makes roller pumps ideal for applications where gentle handling of the fluid is important, as they minimize shear and turbulence. Additionally, roller pumps are known for their ability to self-priming and their reliability in transferring thinner liquids without compromising the integrity of the fluid being pumped.