当P口压力达到设定压力后，先导阀芯首先被打开，由此产生的压差使得主阀芯打开，P到T实现溢流。该类型的阀反向可以承受一定的背压，启闭率较高，适用于高压力、大流量的液压系统
When the pressure at “P”reaches the valve setting,the pilot spool starts to open , Next the main spool opening because of the pressure drop between inside and outside of main spool, Realize overflow from P to T. This type of valve can withstand a certain amount of back pressure,has high opening and closing rate ,Suitable for the hydraulic system of high pressure and large flow.

1.额定压力(Rated pressure):210bar

2.额定流量(Rated flow):60L/min

3.开启率(Cracking Rate)≥88%

4.闭合率(Closing Rate)≥82%

5.油液清洁度(Cleaning code):20/18/15(NAS9)

6.工作温度(Temperature range):-20~+100℃

7.每转压力变化(Pressure change per turn):88.9bar

8.安装扭矩(Installation Torque):40~45Nm

9.锁紧扭矩(Nut Tightening Torque):32~36Nm