Yuken proportional valve is a kind of energy-saving valve, which can be provided the implementation of the components working in a minimum pressure and flow. This valve will be able to maintain a minimum control pressure and flow rate for the pump as per the loading pressure, therefore, it is a low-power, energy-saving, import throttle control valve. Yuken Proportional Valve has a temperature compensation function, it can also control the flow stable and free from oil temperature.