當(dāng)P口壓力達(dá)到設(shè)定壓力后，先導(dǎo)閥芯首先被打開，由此產(chǎn)生的壓差使得主閥芯打開，P到T實(shí)現(xiàn)溢流。該類型的閥一般具有較高的啟閉率,內(nèi)泄漏小，適用于高壓力、大流量的液壓系統(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 generally has high opening and closing rate ,very low internal leakage, Suitable for the hydraulic system of high pressure and large flow.

1.額定壓力(Rated pressure):200bar

2.額定流量(Rated flow):60L/min

3.開啟率(Cracking Rate)≥90%

4.閉合率(Closing Rate)≥85%

5.補(bǔ)油開啟壓力(Oil make-up Cracking Pressure):0.4 bar                       

6.內(nèi)泄漏 (Internal Leakage)≤50ml/min at 150bar

7.油液清潔度(Cleaning code):20/18/15(NAS9)

8.工作溫度(Temperature range):-20~+100℃

9.每裝壓力變化(Pressure change per turn):250bar

10.安裝扭矩(Installation Torque):45~50Nm

11.鎖緊扭矩(Nut Tightening Torque):30~35Nm