當①口沒有壓力或壓力較低，閥芯處于原始位置，②口和③口相通，④口關(guān)閉;當①口壓力超過設(shè)定壓力，閥芯開始移動，③口和④口相通，②口關(guān)閉。該閥結(jié)構(gòu)為外控外排，一般用于執(zhí)行元件的換向。

When the pressure at port 1 is removed or lower, The spool is in its original position, port 2 is connected to port3 and closing the port4; When the pressure at port 1exceeds the set pressure , the spool begins to move, port 3 is connected to port 4 and closing the port 2; The valve

structure is externally controlled and discharged , Generally used for reversing the actuator components.

1.最高壓力(Pressure Max):350bar

2.最大流量(Flow Max):120L/min

3.切換壓力(Pilot pressure):1.0+0.1bar

4.泄漏量(Internal leakage)≤80ml/min at 200 bar                             

5.油液清潔度(Cleaning code):20/18/15(NAS9)

6.工作溫度(Temperature range):-20~+100℃

7.安裝扭矩(Installation torque):60~65Nm