What type of flow does a positive-displacement pump typically exhibit?

A positive-displacement pump is designed to move a specific volume of fluid with each cycle, which results in a flow rate that remains consistent under varying pressure conditions. This characteristic allows the pump to deliver a constant volume of fluid regardless of the back pressure that may be experienced in the system. The mechanism works by trapping a fixed amount of fluid and then forcing it into the discharge line, ensuring that the flow rate remains stable as long as the pump operates within its design limits.

Therefore, the correct understanding of a positive-displacement pump's operation highlights its ability to maintain flow unimpeded by pressure variances, distinguishing it from other pump types that may experience changes in flow rate under different pressure conditions.