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美國(guó)Parker派克電磁換向閥的性能：
換向性能：在規(guī)定的工作條件下，電磁閥通電后能否可靠地?fù)Q向，斷電后能否可靠地復(fù)位。
壓力損失：電磁換向閥的壓力損失由液流流過電磁換向閥的閥口時(shí)產(chǎn)生的流動(dòng)損失和節(jié)流損失組成。
內(nèi)泄露量：電磁換向閥的內(nèi)泄露量是指在規(guī)定的工作條件下，處于各個(gè)不同工作位置時(shí)，從高壓腔到低壓腔的泄露量。
換向和復(fù)位時(shí)間：從電磁鐵通電到閥芯換向終止所需要的時(shí)間，復(fù)位時(shí)間是指從電磁斷電到閥芯回復(fù)到初始位置所需要的時(shí)間。
換向頻率：在單位時(shí)間內(nèi)所允許的zui大換向次數(shù)
使用壽命：電磁閥使用到主要零部件損壞，不能進(jìn)行正常的換向和復(fù)位動(dòng)作，或者使用到其主要性能指標(biāo)明顯惡化超過了規(guī)定指標(biāo)所經(jīng)歷的換向次數(shù)派克電磁換向閥D1VW020系列是用電磁鐵的吸力來推動(dòng)閥芯運(yùn)動(dòng)以變換流體流動(dòng)方向的控制閥，簡(jiǎn)稱電磁閥，通常有滑閥和球閥兩種結(jié)構(gòu)，通常所說的電磁換向閥為滑閥結(jié)構(gòu)，稱球狀或錐狀閥芯的電磁換向閥為電磁換向座閥，也稱電磁球閥。
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