法兰三偏心硬密封蝶阀D343H概述；·产品结构多层次硬密封蝶阀系列产品，系我公司新开发的长寿命、节能型蝶阀。其结构采用三维偏心原理设计,阀座采用硬软密封兼容的多层次结构，加工精湛，工艺先进。本产品由阀体、蝶板、多层次阀座、阀杆、传动机构等主要部件组成。·特点由于本产品蝶阀采用的是三维偏心原理设计，使密封面的空间运动轨迹达到理想化，密封面相互之间无磨擦、无干涉，加之密封材料选择得当，从而使蝶阀的密封性、耐腐蚀性、耐高温性和耐磨性等得到了可靠的保证。其主要特点如下：1、开启力矩小，灵活方便，省力节能：2、三维偏心结构，使蝶板越关越紧，其密封性能可靠，达到无泄漏：3、耐高压、耐腐蚀、耐磨损、使用寿命长等。·主要技术参考数公称通径DN(mm)50-1600公称压力PN(MPa)0.61．O1.62.54.0试验压力(MPa)强度试验0.91.52.43.756.0密封试验Sealtest0.661.11.762.754.4气密封试验AirTest0.60.60.60.60.6适用介质水、蒸气、油品、酸类腐蚀性等。适用温度碳钢：-29％-425％不锈钢：-40％-600％·主要零件的材质零件名称材料阀体铸铁、铸钢、不锈钢、铬钼钢、合金钢蝶板铸钢、合金钢(镀硬铬)、不锈钢、铬钼钢阀座密封圈不锈钢、多层次、聚内脂、抗磨材料阀杆2Crl3、1Crl3不锈钢、铬钼钢2Crl3,1Crl3填料柔性石墨Dd3/643/9/H/Y/F-2.5/6/10C.R.V系列法兰式多层次金属硬密封蝶阀公称通径DN结构长度（标准值）外形尺寸（参考值）连接尺寸（标准值）参考重量LHDd343HDd943HPN0.25MPaPN0.6MPaPN1.0MPa毫米英寸短长H1A1B1H3A3B3DD1Z-dDD1Z-dDD1Z-d5021081501123501802005302502551401104-141401104-141651254-18176521/21121701153701802005302502551601304-141601304-141851454-18208031141801203801802005652502551901504-181901504-182001608-182310041271901384201802006002502552101704-182101704-182201808-182512551402001644601802006402502552402008-182402008-182502108-184015061402101755552702807053003152652258-182652258-182852408-224720081522302007604004257753003153202808-183202808-183402958-22602501016525024383040042594530031537533512-1837533512-1839535012-229530012178270250895450560107030031544039512-2244039512-2244540012-2212435014190290280950450560114030031549044512-2249044512-2250546016-22181400162163103051190535580121030031545049516-2254049516-2256551516-26260450182223303501255535580133557571459555016-2259555016-2261556520-26338500202293503801305535580141557571464560016-2264560016-2267062020-26360600242673904451340570660160565681075570520-2675570520-2678072520-30540700282924304801520750550184465681086081024-2686081024-2689584024-30580800323184705301710750550204065681097592024-3097592024-30101595024-3384590036330510580181075055022557858631075102024-301075102024-301115105028-331050100040410550650196090075023807858631175112028-301175112028-301230116028-3615001200484706307602250100092526407858631375132032-301405134032-331455138032-3920001400565307108502435100092528861575152036-301630165036-361675159036-42300016006460079010302780100092531561785173040-301830176040-361915182040-48470018007267087012303020110098034211985193044-302045197044-392115202044-48650020008076095013503270110098036852185213048-302265218048-422325223048-488700)