Back to the routing of hydraulic components of various hydraulic functions with some components of the hydraulic device slide valve spool (cylindrical spool) and a cylindrical sliding surface with, as it moves along the axis, the flow path opening and closing Parts of hydraulic circuit diagram of graphical symbols for hydraulic circuit diagram of hydraulic components from the oil spill in the channel (or pipe), set to the tank or the oil return flow, etc., or that the phenomenon of hydraulic fluid to return from the hydraulic pump, drive motor, fuel tank, hydraulic relief valve and other accessories, including the source device or the hydraulic control valve device, including oil spills from the normal state of the site should be sealed a small amount of oil flow out of the rated maximum pressure to the pressure of continuous use static seal for the stationary part, to prevent back pressure in the hydraulic circuit fluid leakage oil return pressure surface side or the opposite direction, the effect of sliding pressure seals for the sealing part of the impact of pressure [force] in the transition process of upward pressure maximum clamping phenomenon of fluid slide valve, internal valve, the uneven flow, resulting in pressure on the central axis of the uneven distribution of pressure to the spool valve (or valve cover), it is not action rated flow phenomena under certain conditions, to ensure that the flow control valve in the flow jumps (with pressure compensation flow control valve), when the fluid begins to flow out of date, there flows the instantaneous flow rate exceeds a set value generally refers to the phenomenon of hydraulic pump in the output per unit time the volume of liquid to reduce friction and chatter clamping fluid phenomena on the slide valve of the valve to improve its properties, the increase of higher frequency vibration displacement positive displacement hydraulic pump (or motor) per revolution output (or input) of the liquid volume of hydraulic fluid pressure used to balance the balance the load (including the device itself) transfer working fluid line pipe and piping systems installed throttle throttle imports of components in the implementation of the inlet side of the pipeline, through the throttle movement speed way drain drain line refers to the return pipe, or pipe it into the tank to bypass throttle the flow of traffic as part of the implementation of components, through the bypass pipe installed in the throttle flow back into the tank valve to regulate the way the implementation of component movement speed electric - hydraulic way solenoid and other electrical components into the way in the hydraulic control device ports, transmission fluid connector components of the pilot control the opening of the channel way into the pilot valve means to control the pressure of hydraulic fluid pressure device used to transmit power of the device. In such a device with the implementation of positive displacement pumps and hydraulic components (hydraulic cylinder or hydraulic motor)
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