Which type of pump is commonly used in hydraulic systems?

In hydraulic systems, positive displacement pumps are commonly used due to their ability to move a specific volume of fluid with each cycle. This capability allows for precise control of hydraulic fluid flow and pressure, which is essential in various applications demanding reliable and consistent performance.

Positive displacement pumps ensure that regardless of the pressure in the system, they will maintain a steady flow of fluid. This is particularly important in hydraulic systems where consistent operation is necessary for the performance of machinery and equipment. These pumps function by trapping a fixed volume of fluid and forcing it out into the hydraulic line, making them highly efficient for applications where high pressure and controlled flow are required.

While other pump types like centrifugal, peristaltic, and diaphragm pumps have their applications, they do not offer the same level of control and efficiency needed in typical hydraulic systems. Centrifugal pumps, for example, rely on rotational energy and are more suited for applications where flow is more important than pressure, which can lead to variability in output under changing system conditions.