D31FHE50B2NB00，派克PARKER比例換向閥D31FHE50B2NB00
PARKER派克比例換向閥通過調節(jié)輸入閥內電磁鐵的電壓信號來控制工作閥閥芯的移動，使閥口尺寸發(fā)生改變，從而完成與輸入電壓成比例的壓力、流量輸出的控制，改閥具有集成的電子元件，主級的閥芯位置可調。 
派克PARKER比例換向閥、派克PARKER比例方向控制閥D1DW系列是一種5油腔電控式3位4 通或2位4通滑閥或換向閥。換向閥通過帶有螺紋銜鐵管的濕式換向電磁鐵進行直接操縱。
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D3DW系列5油腔閥
D3DW是一種5油腔、電控、3位4通或2位4通滑閥或換向閥，通過帶有螺紋銜鐵管的濕式電磁鐵進行直接操縱換向。
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