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美國(guó)PARKER換向閥D4L4C2N60：PARKER比例閥具有應(yīng)用靈活、節(jié)省管路和成本低廉等特點(diǎn)，近年來(lái)工程機(jī)械上應(yīng)用越來(lái)越廣泛。常用螺旋插裝式比例閥有二通、三通、四通和多通等形式，二通式比例閥主比例節(jié)流閥，它常它元件一起構(gòu)成復(fù)合閥，對(duì)流量、壓力進(jìn)行控制；三通式比例閥主比例減壓閥，也是移動(dòng)式機(jī)械液壓系統(tǒng)中應(yīng)用較多比例閥，它主對(duì)液動(dòng)操作多路閥先導(dǎo)油路進(jìn)行操作。

美國(guó)PARKER換向閥D4L4C2N60：Parker螺紋插裝閥擁有以下眾多類型可供選擇：平衡閥MHC。溢流閥RDH，RAH，XR，RU。泄放溢流閥RAH。差動(dòng)卸荷溢流閥RU。
 
直動(dòng)式單向閥
Parker CRK和CRB系列直動(dòng)式單向閥可以分為兩類：CRK和CRB反向截止單向閥以及CRH先導(dǎo)式反向截止單向閥。這兩種系列都可以方便地旋入閥體孔中。
 

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美國(guó)派克  PARKER線圈   派克電磁閥  派克上?？?nbsp; ** 假一罰十