派克PARKER電液方向控制閥D*1VW系列部分型號

派克PARKER電液方向控制閥D*1VW系列技術簡介

D31, D41, D81, D91及D111系列是電液操控的4/3 （三位四通)或4/2(二位四通)方向控制閥，并由一NG6電磁閥進行先導操控。

先導控制油的壓力和流量對主級閥芯的換向響應時間有重要的影響。為確保證主閥芯換向可靠，應選擇恰當的控制油源和泄油選項。(若閥芯機能有尸通丁的情況，則應需采用外部控制油源或在主閥口內置一個單向閥。對于換向過渡位置機能為負遮蓋的閥，建議亦按相同方法處理。)在任何工作狀況下均必須保證最低的控制壓力。

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