How pressure develops in hydraulic system?

In a hydraulic system, pressure develops when a fluid is confined within a closed space and force is applied to it, typically through a piston or pump. This force compresses the fluid, causing it to transmit pressure equally in all directions according to Pascal's principle. The resistance encountered by the fluid in the system, such as through valves or fittings, contributes to the overall pressure buildup. As a result, the system can effectively transmit force to perform work, such as lifting or moving heavy loads.