氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)是(shi)由活塞(sai)式氣(qi)動(dong)(dong)(dong)執(zhi)行器(qi)和蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)組成。根據(ju)作(zuo)用(yong)(yong)方(fang)式可(ke)分為氣(qi)動(dong)(dong)(dong)調節(jie)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)型(xing)和氣(qi)動(dong)(dong)(dong)開(kai)(kai)關蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)。目前(qian)氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)在低(di)壓大中口徑(jing)管道(dao)上的(de)使用(yong)(yong)越(yue)來(lai)越(yue)多(duo)。氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)的(de)主要優點(dian)，結構(gou)簡(jian)(jian)單，體(ti)積小(xiao)重(zhong)量輕，造價低(di)。氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa),氣(qi)動(dong)(dong)(dong)法(fa)蘭蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa),氣(qi)動(dong)(dong)(dong)通(tong)風(feng)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa),氣(qi)動(dong)(dong)(dong)軟密(mi)封蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)可(ke)外配氣(qi)動(dong)(dong)(dong)閥(fa)(fa)(fa)門定(ding)位器(qi)，輸入控(kong)制(zhi)信(xin)號(4-20mADC或1-5VDC)氣(qi)源便(bian)(bian)可(ke)控(kong)制(zhi)運轉。亦(yi)可(ke)配行程限位開(kai)(kai)關、電(dian)磁閥(fa)(fa)(fa)、三聯件及0.4-0.7MPa氣(qi)源可(ke)實現開(kai)(kai)關操作(zuo)，并送出二對無源觸點(dian)信(xin)號指示(shi)閥(fa)(fa)(fa)門的(de)開(kai)(kai)關。氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa),氣(qi)動(dong)(dong)(dong)法(fa)蘭蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa),氣(qi)動(dong)(dong)(dong)通(tong)風(feng)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa),氣(qi)動(dong)(dong)(dong)軟密(mi)封蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)結構(gou)簡(jian)(jian)單緊湊，加工(gong)方(fang)便(bian)(bian)，易制(zhi)成大口徑(jing)，具有自(zi)清洗(xi)作(zuo)用(yong)(yong)，阻力(li)系數(shu)小(xiao)，流(liu)通(tong)能力(li)大。氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)安裝在高空(kong)暗道(dao)，經過二位五通(tong)電(dian)磁閥(fa)(fa)(fa)控(kong)制(zhi)操作(zuo)方(fang)便(bian)(bian)，也可(ke)調節(jie)流(liu)量介(jie)質。流(liu)體(ti)阻力(li)較(jiao)小(xiao)，中大口徑(jing)的(de)氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(fa)(fa)全開(kai)(kai)時有效流(liu)通(tong)面積較(jiao)大，啟(qi)(qi)閉快且(qie)省力(li)，蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)扳旋轉90角(jiao)度便(bian)(bian)可(ke)完成啟(qi)(qi)閉，氣(qi)動(dong)(dong)(dong)蝶(die)(die)(die)(die)(die)(die)(die)(die)(die)閥(fa)(f♓a)(fa)不僅(jin)在石油(you)、煤氣(qi)、化工(gong)、水處理等一般(ban)工(gong)業上應用(yong)(yong)，而(er)且(qie)還應用(yong)(yong)于熱(re)電(dian)站(zhan)的(de)冷卻水系統。