D343H多(duo)層次金(jin)屬(shu)(shu)硬密(mi)封(feng)(feng)(feng)蝶閥為偏(pian)心金(jin)屬(shu)(shu)密(mi)封(feng)(feng)(feng)結構,密(mi)封(feng)(feng)(feng)形(xing)式為金(jin)屬(shu)(shu)對金(jin)屬(shu)(shu)密(mi)封(feng)(feng)(feng),可調換(huan)金(jin)屬(shu)(shu)密(mi)封(feng)(feng)(feng)圈(quan)對金(jin)屬(shu)(shu)密(mi)封(feng)(feng)(feng),不(bu)銹(xiu)鋼板(ban)與(yu)石墨復合板(ban)密(mi)封(feng)(feng)(feng)圈(quan)對金(jin)屬(shu)(shu)密(mi)封(feng)(feng)(feng).硬密(mi)封(feng)(feng)(feng)蝶閥的驅動(dong)(dong)(dong)形(xing)式除了電動(dong)(dong)(dong)之外還有:手動(dong)(dong)(dong),蝸(gua)輪(lun)桿傳(chuan)動(dong)(dong)(dong),氣動(dong)(dong)(dong)等(deng)。
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