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日(ri)本(ben)*SMC電(dian)(dian)磁閥(fa)(fa)VR1220F-08型 SMC電(dian)(dian)磁閥(fa)(fa)是用(yong)來控(kong)(kong)制流(liu)體方向的(de)(de)自動(dong)化基(ji)礎元件，屬于(yu)執行器；SMC電(dian)(dian)磁閥(fa)(fa)通常用(yong)于(yu)機(ji)械控(kong)(kong)制和工業(ye)閥(fa)(fa)門上面，對介質方向進行控(kong)(kong)制，從而達到對閥(fa)(fa)門開(kai)關的(de)(de)控(kong)(kong)制。SMC電(dian)(dian)磁閥(fa)(fa)的(de)(de)用(yong)途在(zai)SMC電(dian)(dian)磁閥(fa)(fa)不斷(duan)發(fa)展的(de)(de)今天，SMC電(dian)(dian)磁閥(fa)(fa)的(de)(de)價值也在(zai)不斷(duan)的(de)(de)提高。

日本SMC四(si)通(tong)電(dian)(dian)磁閥SJ3000型(xing) SMC電(dian)(dian)磁閥SJ3000系(xi)列警告手動(dong)(dong)過(guo)載(zai)裝(zhuang)置操作電(dian)(dian)磁閥b電(dian)(dian)磁一個(ge)手動(dong)(dong)過(guo)載(zai)裝(zhuang)置為(wei)電(dian)(dian)磁閥b，黃色手動(dong)(dong)過(guo)載(zai)裝(zhuang)置為(wei)電(dian)(dian)磁a藍色手動(dong)(dong)過(guo)載(zai)裝(zhuang)置開關Push-turn鎖定開槽型(xing)同時按下，轉(zhuan)在箭頭指示的(de)方向走（順時針方向旋(xuan)轉(zhuan)90°）。

日本(ben)SMC先(xian)導(dao)(dao)式(shi)五通電(dian)磁(ci)(ci)閥(fa)(fa)(fa)VQZ系(xi)列 SMC VQZ系(xi)列電(dian)磁(ci)(ci)閥(fa)(fa)(fa)的安(an)全(quan)閥(fa)(fa)(fa)為一體，組成(cheng)先(xian)導(dao)(dao)式(shi)壓(ya)力閥(fa)(fa)(fa)，該閥(fa)(fa)(fa)即(ji)是(shi)卸(xie)荷(he)閥(fa)(fa)(fa)又是(shi)安(an)全(quan)閥(fa)(fa)(fa)，有時(shi)又是(shi)溢流(liu)閥(fa)(fa)(fa)．卸(xie)荷(he)時(shi)其控(kong)制油(you)(you)道(dao)貫(guan)穿(chuan)各(ge)路(lu)換向(xiang)閥(fa)(fa)(fa)，同前述卸(xie)荷(he)油(you)(you)道(dao)．當各(ge)路(lu)換向(xiang)閥(fa)(fa)(fa)處于中(zhong)立位置時(shi)，卸(xie)荷(he)閥(fa)(fa)(fa)的控(kong)制油(you)(you)道(dao)貫(guan)穿(chuan)各(ge)路(lu)換向(xiang)閥(fa)(fa)(fa)并與油(you)(you)箱連通．卸(xie)荷(he)時(shi)，大部分油(you)(you)液卸(xie)荷(he)，通道(dao)短，壓(ya)力損失低。