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cyh1986
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樓主  發(fā)表于: 2016-11-18 14:31
我們正常用的4v220-8的問(wèn)題，線(xiàn)圈只要一下電，閥就換向了。前幾天看見(jiàn)一個(gè)閥，型號看不見(jiàn)，樣子和4v220-8的樣子一樣，換向時(shí)電要一直保持。請問(wèn)這種閥的型號是什么？
心情不錯
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1樓  發(fā)表于: 2016-11-19 14:14
樓主 常用的是中泄閥，  這次你見(jiàn)到的是中閉（中封）閥

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