Which type of pump could utilize a check valve to maintain its functionality?

A gear pump could utilize a check valve to maintain its functionality because these pumps operate by the movement of gears that trap and displace fluid. The use of a check valve in this system helps prevent backflow, ensuring that the fluid remains in the intended flow direction. This is particularly important in applications where the fluid must be delivered at a consistent pressure and volume.

In addition, check valves can help maintain priming in a gear pump, thereby preventing the pump from losing its ability to generate suction. This is crucial as any loss of prime can lead to operational inefficiencies or even pump damage.

Other types of pumps also have specific operational characteristics where a check valve may not be as relevant or necessary for functionality. For example, centrifugal pumps rely on the kinetic energy of a rotating impeller for fluid movement and often include mechanisms to manage backflow but do not necessarily need a check valve for their basic function.