氣(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)閥(fa)門(men)和(he)液(ye)(ye)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)是以一定(ding)壓(ya)力(li)(li)(li)的(de)(de)(de)空氣(qi)、水或油為(wei)(wei)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)(li)源，利用(yong)(yong)(yong)氣(qi)缸(或液(ye)(ye)壓(ya)缸)和(he)活(huo)塞(sai)的(de)(de)(de)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)來驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)閥(fa)門(men)的(de)(de)(de)，一般氣(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)空氣(qi)壓(ya)力(li)(li)(li)小于(yu)0.8MPa，液(ye)(ye)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)水壓(ya)或油壓(ya)為(wei)(wei)2.5MPa~25MPa。如用(yong)(yong)(yong)于(yu)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)隔膜閥(fa)；回(hui)轉(zhuan)型氣(qi)、液(ye)(ye)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)裝(zhuang)置(zhi)用(yong)(yong)(yong)于(yu)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)球(qiu)閥(fa)、蝶閥(fa)或旋(xuan)塞(sai)閥(fa)。液(ye)(ye)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)裝(zhuang)置(zhi)的(de)(de)(de)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)(li)大，適(shi)用(yong)(yong)(yong)于(yu)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)大口徑閥(fa)門(men)。如用(yong)(yong)(yong)于(yu)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)旋(xuan)塞(sai)閥(fa)、球(qiu)閥(fa)和(he)蝶閥(fa)時，必須將活(huo)塞(sai)的(de)(de)(de)往復(fu)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)轉(zhuan)換面回(hui)轉(zhuan)運(yun)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)。除了采(cai)用(yong)(yong)(yong)氣(qi)缸或液(ye)(ye)壓(ya)缸的(de)(de)(de)活(huo)塞(sai)來驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)外，還有采(cai)用(yong)(yong)(yong)氣(qi)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)薄膜驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)的(de)(de)(de)，因其行程和(he)驅(qu)動(dong)(dong)(dong)(dong)(dong)(dong)(dong)力(li)(li)(li)較小，故主要用(yong)(yong)(yong)于(yu)調節(jie)閥(fa)。