電液比例閥是一種按輸入的電信號連續地、按比例地控制液壓系統的液流方向、流量和壓力的閥類。它山電-機械比例轉換裝置和液壓控制閥本體兩大部分構成.前者將輸入的電信號連續地按比例地轉換為機械力和位移輸出，后者在接受這種機械力和位移之后、按比例連續地輸出壓力和流量R900429414 DBDS6P1X/25
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