Why are positive displacement pumps preferred in hydraulic applications?

Positive displacement pumps are preferred in hydraulic applications primarily because they excel at providing accurate flow control. This accuracy is crucial in hydraulic systems where precise movements and forces are required. Unlike other types of pumps, the flow rate of positive displacement pumps remains relatively constant regardless of the backpressure in the system. As a result, they maintain a consistent output flow, which is essential for achieving the desired performance in hydraulic systems.

Additionally, the design of positive displacement pumps allows them to effectively handle high viscosity fluids and generate substantial forces. This feature enhances their reliability in various applications, ensuring that operations do not fluctuate due to changes in system pressure. Therefore, the ability to maintain a consistent flow rate makes positive displacement pumps a preferred choice for hydraulic systems requiring precise and reliable performance.