DD343H/W低温蝶阀

DD343H/W低温蝶阀主要适用于介质温度在-40℃~ -196℃等液氮(深冷)介质的低温工况中,为了保证低温蝶阀能在低温下安全可靠地运行,阀门零件在精加工前已进行深冷处理,阀盖采用长颈结构,其目的保护填料函的功能,使填料函处于离低温较远的位置,保证填料的密封效果。低温蝶阀使用介质通常为液氦、液氢、液化天然气、液氮、液氧等低温流体。
零部件材料

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

性能规范

工作压力(MPa)10—40
适用温度℃≤425≤200
适用介质水、油或非腐蚀性介质硝酸类介质醋酸类介质
材料阀体、蝶板WCBCF8/304CF3M/316L
阀杆2Cr13304316L
阀体密封面堆焊 507堆焊 304堆焊 316L
蝶板密封面304+柔性石墨304+PTFE316+PTFE
填料柔性石墨PTFEPTFE
泄漏率符合GB/T13927-92标准
驱动方式蜗轮传动、电动、气动、液动、手动

执行标准

制造标准JB/T8527-97
法兰标准GB9113-2000
结构长度标准GB12221-89
检验标准GB/T13927-92

外形连接尺寸

公称通径DN外形尺寸连接尺寸
LHD343HD643HD943HPN0.6MPaPN1.0MPa
H 1A 1B 1H 2A 2B 2H 3A 3B 3DD 1z-dDD 1z-d
50108150112350180200605245725302502551401104-141651254-18
65112170115370180200625245725502502551601304-141851454-18
80114180120380180200645245725652502551901504-182001608-18
100127190138420180200675355926002502552101704-182201808-18
125140200164460180200715355926402502552402008-182502108-18
150140210175555270280800355927053003152652258-182852408-22
20015223020860527028085025017077530031532028012-183402958-22
25016525024368027028092525017094530031537533512-2239533012-22
3001782702838003804201035450220107030031544039512-2244540012-22
3501902903108353804201070450220114030031549044516-2250546016-22
4002163103409154504701190450280121030031554049516-2256551516-26
4502223303809604504701250650280133557571459555016-2261556520-26
50022935041010204804901295650280141557571464560020-2267062020-26
60026739047012256406601455850380160565681075570520-2678072520-30
70029243055013556406601585850380184465681086081024-2689584024-30
800318470640147064066017001250380204065681097592024-30101595024-33
90033051071015458509001865125038022557858631075102024-301115105028-33
100041055077017958509002015150058023807858631175112028-301230116028-36
120047063089019658509002226150058026407858631405134032-331455138032-39
14005307109202380/////2886//1630156036-331675159036-42
160060079010852956/////3156//1820176040-331915185040-54
180067087012303221/////3421//2045197044-422115202044-54
200076095013503485/////3685//2265218048-482325223044-54

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