Second HAWE Hydraulic Valve

Load-sensitive principle, applied in hydraulic system, can realize flow control of actuators without any influence of the load. Load-sensitive mechanism (fixed differential reducing valve) enables the outlet pressure to match with the changing load continuously during the working period. One side is with the function of load signal & spring force, while the other side is imposed on outlet pressure of fixed differential reducing valve which is equal to the sum of load pressure and the pressure generated by spring, namely, the differential pressure beside the throttle of proportional valve is a constant value and therefore the flow of proportional valve is only in proportional to control signal. As to the valve type HLPSL, the load pressure signal passes shuttle valve, and the damper exerts a function on the spring cavity of fixed differential overflow valve which will regulate the system pressure to the value of the sum of load pressure and spring force, so that the outlet pressure of pump can match with the load pressure. In case the load pressure is low, the outlet pressure of pump will be low and vice verse, so as to realize the energy conservation of the system. 

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