當P口壓力達到設定壓力后，先導閥芯首先被打開，由此產生的壓差使得主閥芯打開，P到T實現(xiàn)溢流。該類型的閥從T到P始終關閉，反向可以承受較高的背壓，適用于回油背壓較大的液壓系統(tǒng)。

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 always locked from T to P, Reverse can withstand high back pressure Suitable for the hydraulic system of high back pressure from T to P.

1.額定壓力(Rated pressure):250bar

2.額定流量(Rated flow):50L/min

3.開啟率(Cracking Rate):≥94%

4.閉合率(Closing Rate):≥86%

5.油液清潔度(Cleaning code):20/18/15(NAS9)

6.工作溫度(Temperature range):-20~+100℃

7.每轉壓力變化(Pressure change per turn):82.5bar                           

8.安裝扭矩(Installation Torque):40~47Nm

9.鎖緊扭矩(Nut Tightening Torque):12~17Nm