氣(qi)(qi)動(dong)閥(fa)(fa)門和(he)(he)液(ye)(ye)動(dong)是以(yi)一定(ding)壓(ya)(ya)(ya)力(li)的(de)空(kong)氣(qi)(qi)、水(shui)或油為(wei)動(dong)力(li)源,利用(yong)(yong)(yong)氣(qi)(qi)缸(或液(ye)(ye)壓(ya)(ya)(ya)缸)和(he)(he)活塞(sai)的(de)運動(dong)來驅(qu)(qu)(qu)(qu)動(dong)閥(fa)(fa)門的(de)，一般氣(qi)(qi)動(dong)的(de)空(kong)氣(qi)(qi)壓(ya)(ya)(ya)力(li)小于(yu)(yu)0.8MPa,液(ye)(ye)動(dong)的(de)水(shui)壓(ya)(ya)(ya)或油壓(ya)(ya)(ya)為(wei)2.5MPa~25MPa。或隔膜閥(fa)(fa)；回(hui)轉(zhuan)型氣(qi)(qi)、液(ye)(ye)驅(qu)(qu)(qu)(qu)動(dong)裝置用(yong)(yong)(yong)于(yu)(yu)驅(qu)(qu)(qu)(qu)動(dong)裝置用(yong)(yong)(yong)于(yu)(yu)驅(qu)(qu)(qu)(qu)動(dong)球閥(fa)(fa)、蝶(die)閥(fa)(fa)或旋塞(sai)閥(fa)(fa)。液(ye)(ye)動(dong)裝置的(de)驅(qu)(qu)(qu)(qu)動(dong)力(li)大，適用(yong)(yong)(yong)于(yu)(yu)驅(qu)(qu)(qu)(qu)動(dong)大口(kou)徑閥(fa)(fa)門。如用(yong)(yong)(yong)于(yu)(yu)驅(qu)(qu)(qu)(qu)動(dong)旋塞(sai)閥(fa)(fa)、球閥(fa)(fa)和(he)(he)蝶(die)閥(fa)(fa)時，必須(xu)將(jiang)活塞(sai)的(de)往(wang)復運動(dong)轉(zhuan)換(huan)面回(hui)轉(zhuan)運動(dong)。除(chu)了(le)采(cai)用(yong)(yong)(yong)氣(qi)(qi)缸或液(ye)(ye)壓(ya)(ya)(ya)缸的(de)活塞(sai)來驅(qu)(qu)(qu)(qu)動(dong)外，不有(you)采(cai)用(yong)(yong)(yong)氣(qi)(qi)動(dong)薄膜驅(qu)(qu)(qu)(qu)動(dong)的(de)，因其行程(cheng)和(he)(he)驅(qu)(qu)(qu)(qu)動(dong)力(li)較小，故(gu)主(zhu)要用(yong)(yong)(yong)于(yu)(yu)調節閥(fa)(fa)。