FESTO電(dian)磁(ci)(ci)閥(fa)隔磁(ci)(ci)套管內的(de)鐵(tie)芯(xin)結(jie)束，不存在動密封，于是(shi)外(wai)漏易(yi)堵絕(jue)。電(dian)動閥(fa)力(li)矩控(kong)制不易(yi)，容易(yi)出現(xian)內漏，乃至拉斷閥(fa)桿頭部;電(dian)磁(ci)(ci)閥(fa)的(de)結(jie)構型式容易(yi)控(kong)制內泄漏，直(zhi)至降替零。于是(shi)，電(dian)磁(ci)(ci)閥(fa)使用(yong)非常(chang)安全，特別(bie)實用(yong)在腐蝕性、有毒(du)或高低溫的(de)介質。

　　FESTO電磁閥(fa)的用(yong)(yong)處電磁閥(fa)用(yong)(yong)來(lai)液體(ti)與氣體(ti)管路的開(kai)(kai)關控(kong)制(zhi)，就是兩位DO控(kong)制(zhi)。通(tong)常(chang)用(yong)(yong)來(lai)小型管道的控(kong)制(zhi)。電動閥(fa)用(yong)(yong)來(lai)液體(ti)、氣體(ti)與風(feng)系(xi)統管道介質(zhi)流量的模擬數量調節，就是AI控(kong)制(zhi)。在大型閥(fa)門和(he)風(feng)系(xi)統的控(kong)制(zhi)當中同樣能夠使用(yong)(yong)電動閥(fa)做兩位開(kai)(kai)關控(kong)制(zhi)。

　　電(dian)(dian)磁閥只(zhi)可(ke)以(yi)用(yong)作開關(guan)(guan)數(shu)量，就是DO控制(zhi)(zhi)，只(zhi)可(ke)以(yi)用(yong)來小(xiao)管道(dao)(dao)控制(zhi)(zhi)，經常見到在DN50和下面管道(dao)(dao)，往上(shang)就很少了。電(dian)(dian)動(dong)(dong)閥能夠有AI反饋(kui)信號，能夠由(you)DO或AO控制(zhi)(zhi)，相(xiang)對比(bi)(bi)較(jiao)見于大管道(dao)(dao)與風閥等。1.開關(guan)(guan)形式(shi)電(dian)(dian)磁閥通(tong)過線圈驅(qu)動(dong)(dong)，只(zhi)可(ke)以(yi)開或關(guan)(guan)，開關(guan)(guan)時(shi)動(dong)(dong)作時(shi)間簡短。電(dian)(dian)動(dong)(dong)閥的(de)驅(qu)動(dong)(dong)通(tong)常就是使用(yong)電(dian)(dian)機(ji)，開或關(guan)(guan)動(dong)(dong)作結束須(xu)要肯定(ding)的(de)時(shi)間模擬(ni)數(shu)量的(de)，能夠做調節。2.工(gong)作性質(zhi)電(dian)(dian)磁閥通(tong)常流通(tong)系數(shu)非(fei)常小(xiao)，并且工(gong)作壓力差很小(xiao)。好比(bi)(bi)一般25口徑(jing)的(de)電(dian)(dian)磁閥流通(tong)系數(shu)相(xiang)比(bi)(bi)15口徑(jing)的(de)電(dian)(dian)動(dong)(dong)球閥小(xiao)很多。