Understand The Structural Composition of The Customized Hydraulic System The hydraulic power section is represented by a circuit diagram to show the interrelationships among different functional components. The hydraulic source includes a hydraulic pump, an electric motor, and hydraulic auxiliary components; the hydraulic control section contains various control valves for controlling the flow, pressure, and direction of the working oil; the execution section contains hydraulic cylinders or hydraulic motors, which can be selected according to actual requirements.