D343H、D643H法兰式金属硬密封蝶阀江苏尼必可流体法兰式金属硬密封蝶阀本蝶阀采用的是三维偏心原理设计，是在原有的双偏心基础上增加了一个独特的偏心，不仅利用了原有的凸轮效应，而且完全消除了90度旋转中阀板与密封圈之间的全部磨擦。通过优化了蝶板密封面与阀座密封圈之间接触角的特性，阀门接触角大于锁定锥角范围。从几何形状看，排除了蝶板卡死的可能性，从而确保阀门开关所需扭矩。蝶板密封面可以镶不锈钢密封圈或在蝶板上直接堆焊不锈钢或硬质合金，可确保阀门在各种用途包括高温和不洁工况下耐用。主要零件材料：零件名称材料阀体铸铁、不锈钢、铬钼钢、合金钢蝶板铸钢、合金钢、不锈钢、铬钼钢密封圈不锈钢与耐高温石棉板组合成多层次阀杆2Cr13、1Cr13不锈钢、铬钼钢填料柔性石墨D3（6、9）43H-6～10（C、P、R、V）系列连接尺寸：公称通径DN外形尺寸连接尺寸LHD343HD643HD943HPN0.6MPaPN1.0MPa短长H1A1B1H2A2B2H3A3B3DD1z-dDD1z-d50108150112350180200605245725302502551401104-141651254-1865112170115370180200625245725502502551601304-141851454-1880114180120380180200645245725652502551901504-182001608-18100127190138420180200675355926002502552101704-182201808-18125140200164460180200715355926402502552402008-182502108-18150140210175555270280800355927053003152652258-182852408-2220015223020860527028085025017077530031532028012-183402958-2225016525024368027028092525017094530031537533512-2239533012-223001782702838003804201035450220107030031544039512-2244540012-223501902903108353804201070450220114030031549044516-2250546016-224002163103409154504701190450280121030031554049516-2256551516-264502223303809604504701250650280133557571459555016-2261556520-2650022935041010204804901295650280141557571464560020-2267062020-2660026739047012256406601455850380160565681075570520-2678072520-3070029243055013556406601585850380184465681086081024-2689584024-30800318470640147064066017001250380204065681097592024-30101595024-3390033051071015458509001865125038022557858631075102024-301115105028-33100041055077017958509002015150058023807858631175112028-301230116028-36120047063089019658509002226150058026407858631405134032-331455138032-391400530710920238028861630156036-331675159036-4216006007901085295631561820176040-331915185040-5418006708701230322134212045197044-422115202044-5420007609501350348536852265218048-482325223044-54D3（6、9）43H-16～25（C、P、R、V）系列连接尺寸：通径DN外形尺寸连接尺寸LHD343HD643HD943HPN1.6MPaPN2.5MPa短长H1A1B1H2A2B2H3A3B3DD1z-dDD1z-d50108150112350180200605245725302502551651254-181651254-1865112170115370180200625245725502502551851454-181851458-1880114180120380180200645245725652502552001608-182001608-18100127190138420180200675355926002502552201808-182351908-22125140200164460180200715355926402502552502108-182702208-16150140210175555270280800355927053003152852408-223002508-1620015223020860527028085025017077530031534029512-2236031012-2625016525024368027028092525017094530031540535512-2642537012-303001782702838003804201035450220107030031546041012-2648543016-303501902903108353804201070450220114030031552047016-2655549016-334002163103409154504701190450280121030031558052516-3062055016-364502223303809604504701250650280133557571464058520-3067060020-3650022935041010204804901295650280141557571471065020-3373066020-3660026739047012256406601455850380160565681084077020-3684577020-3970029243055013556406601585850380184465681091084024-3696087524-428003184706401470640660170012503802040656810102595024-39108599024-4890033051071015456509001865125038022557858631125105028-391185109028-48100041055077017956509002015150058023807858631255117028-421320121028-561200470630890196565090058026407858631485139032-481530142032-56140053071092023802886??1685159036-481755164036-621600600790108529563156??1930182040-5619751860)