氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)帶(dai)手動(dong)(dong)(dong)硬(ying)密(mi)封(feng)(feng)蝶(die)(die)(die)閥(fa)、帶(dai)手動(dong)(dong)(dong)蝸輪氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)蝶(die)(die)(die)閥(fa)襯四氟故密(mi)封(feng)(feng)性能良好蝶(die)(die)(die)板厚(hou)度是(shi)介質流經閥(fa)體(ti)時的阻力(li)操(cao)作(zuo)(zuo)簡(jian)單(dan)具(ju)有(you)(you)結構緊(jin)湊輸出(chu)扭矩大氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)硬(ying)密(mi)封(feng)(feng)蝶(die)(die)(die)閥(fa)、氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)三偏(pian)心蝶(die)(die)(die)閥(fa)、高性能偏(pian)心蝶(die)(die)(die)閥(fa)操(cao)作(zuo)(zuo)簡(jian)單(dan)采用(yong)(yong)齒輪齒條式(shi)結構傳動(dong)(dong)(dong)因(yin)而啟閉(bi)力(li)矩較小有(you)(you)雙作(zuo)(zuo)用(yong)(yong)式(shi)和單(dan)作(zuo)(zuo)用(yong)(yong)式(shi)（彈簧復位(wei)）在其(qi)90°～0°關閉(bi)時D643W氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)硬(ying)密(mi)封(feng)(feng)蝶(die)(die)(die)閥(fa)、氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)偏(pian)心蝶(die)(die)(die)閥(fa)、氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)鑄(zhu)鋼法蘭蝶(die)(die)(die)閥(fa) ☆手動(dong)(dong)(dong)機構：HVSD手操(cao)機構 用(yong)(yong)隨閥(fa)桿轉動(dong)(dong)(dong)的圓形蝶(die)(die)(die)板做(zuo)啟閉(bi)件,以實現其(qi)動(dong)(dong)(dong)作(zuo)(zuo)的氣(qi)(qi)(qi)(qi)(qi)動(dong)(dong)(dong)閥(fa)門主要做(zuo)截(jie)斷閥(fa)使用(yong)(yong),亦可(ke)設計(ji)成具(ju)有(you)(you)調節或切斷兼調節的功能