BD343Y、BD343WC法兰式硬密封保温蝶阀也称夹套蝶阀，是在普通三偏心金属硬密封蝶阀的基础上在阀体外部焊装了金属夹套，在保温蝶阀的阀体两侧装有夹套接口，可涵入蒸汽或其它过热气体，以防止介质在常温状态下凝固或结晶。
技术参数【执行标准】设计规范： GB/T 12238 API609法兰连接： GB/T 9113 API609 ASME B16.5 ISO5752试验与检验：GB/T 13927 API598【性能参数】保温蝶阀型号BD343HBD343YBD343WCBD643HBD643YBD643WCBD943HBD943YBD943WC适用介质易凝固或结晶类介质等材料阀体WCB CF8 CF8 铬钼钢 低温钢 镍合金 Monel Duplex Steel蝶板WCB CF8 CF8 铬钼钢 低温钢 镍合金 Monel Duplex Steel阀杆2Cr13 F304 F316铬钼钢 低温钢 镍合金 Monel密封面SS+柔性石墨 不锈钢司太立合金 碳化钨 镍合金 Monel填料柔性石墨【外形尺寸】公称通径结构长度H外形尺寸(参考值)DNLBD343DB643BD943毫米mm英寸inch短系列长系列H1A1B1H2A2B2H3A3B350210815011235018020062524572530250255652 1/2112170115370180200625245725302502558031141801203801802006452457256525025510041271901384201802006753559260025025512551402001644601802007153559264025025515061402101755552702808003559270530031520081522302007604004258502501707753003152501016525024383040042592525017094530031530012178270250895450560103545022010703003153501419029028095045056010754502201140300315400162163103051190535580119045022012103003154501822233035012555355801250650280133557571450020229350380130553558012906502801415575714600242673904451340570660145585038016056568107002829243048015207505501585850380184465681080032318470530171075055017001250380204065681090036330510580181075055019651250380225578586310004041055065019609007502015125038023807858631200484706307602250100092522501250380264078586314005653071085024351000925---2886--160064600790103027801000925---3156--180072670870123030201100980---3421--200080760950135032701100980---3685--
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