BD343Y、BD343WC法蘭式硬密封保溫蝶閥也稱夾套蝶閥，是在普通三偏心金屬硬密封蝶閥的基礎上在閥體外部焊裝了金屬夾套，在保溫蝶閥的閥體兩側裝有夾套接口，可涵入蒸汽或其它過熱氣體，以防止介質在常溫狀態下凝固或結晶。
技術參數【執行標準】設計規范： GB/T 12238 API609法蘭連接： GB/T 9113 API609 ASME B16.5 ISO5752試驗與檢驗：GB/T 13927 API598【性能參數】保溫蝶閥型號BD343HBD343YBD343WCBD643HBD643YBD643WCBD943HBD943YBD943WC適用介質易凝固或結晶類介質等材料閥體WCB CF8 CF8 鉻鉬鋼 低溫鋼 鎳合金 Monel Duplex Steel蝶板WCB CF8 CF8 鉻鉬鋼 低溫鋼 鎳合金 Monel Duplex Steel閥桿2Cr13 F304 F316鉻鉬鋼 低溫鋼 鎳合金 Monel密封面SS+柔性石墨 不銹鋼司太立合金 碳化鎢 鎳合金 Monel填料柔性石墨【外形尺寸】公稱通徑結構長度H外形尺寸(參考值)DNLBD343DB643BD943毫米mm英寸inch短系列長系列H1A1B1H2A2B2H3A3B350210815011235018020062524572530250255652 1/2112170115370180200625245725302502558031141801203801802006452457256525025510041271901384201802006753559260025025512551402001644601802007153559264025025515061402101755552702808003559270530031520081522302007604004258502501707753003152501016525024383040042592525017094530031530012178270250895450560103545022010703003153501419029028095045056010754502201140300315400162163103051190535580119045022012103003154501822233035012555355801250650280133557571450020229350380130553558012906502801415575714600242673904451340570660145585038016056568107002829243048015207505501585850380184465681080032318470530171075055017001250380204065681090036330510580181075055019651250380225578586310004041055065019609007502015125038023807858631200484706307602250100092522501250380264078586314005653071085024351000925---2886--160064600790103027801000925---3156--180072670870123030201100980---3421--200080760950135032701100980---3685--
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