本标准规定了法兰连接阀门的结构长度

1、GB/T 122212005 中华人民共和国国家标准金属阀门 结构长度Metal valvesFace to face，end to end，center toface and center to end dimensions（ISO 5752：1982，Metal valves for use in flanged pipe systemsFace-to-face and center-to-face dimensions，MOD）GB/T 122212005代替GB/T 122211989，GB/T 15188.115188.419941 范围本标准规定了法兰连接阀门的结构长度、焊接端阀门

2、的结构长度、对夹连接阀门的结构长度、内螺纹连接阀门结构长度、外螺纹连接阀门结构长度，及其结构尺寸的极限偏差。本标准适用于公称压力PN42.0 MPa，公称通径DN3 mmDN4 000 mm的闸阀、截止阀、球阀、蝶阀、旋塞阀、隔膜阀、止回阀等的结构长度。2 规范性引用文件下列文件中的条款通过本标准的引用而成为本标准的条款。凡是注日期的引用文件，其随后所有的修改单（不包括勘误的内容）或修订版均不适用于本标准，然而，鼓励根据本标准达成协议的各方研究是否可使用这些文件的最新版本。GB/T 1047 管道元件DN（公称尺寸）的定义和选用（GB/T 10472005，ISO 6708：1995，MOD）

3、GB/T 1048 管道元件PN（公称压力）的定义和选用（GB/T 10482005，ISO 7268：1996，MOD）3 术语3.1直通式阀门结构长度 through way type of valves face to face，end to end, center to face and center to end dimensions 在阀体通道终端两个垂直于阀门轴线平面之间的距离。3.2 角式阀门结构长度 angle type of valves face to face，end to end，center to face and center to end dimensions

4、在阀体通道某一端垂直于轴线的平面与阀体另一终端轴线之间的距离。3.3 对夹式阀门 wafer type valves 靠管道法兰夹持固定密封结构的阀门。其结构长度指阀体通道终端两个与管道法兰接触面之间的距离。2005-02-21发布 2005-08-01实施中华人民共和国国家质量监督检验检疫总局中 国 国 家 标 准 化 管 理 委 员 会 发布4 结构长度尺寸与极限偏差4.1 公称通径数值按GB/T 1047的规定；公称压力数值按CB/T 1048的规定。4.2 直通式阀门结构长度如图l所示；角式阀门结构长度如图2所示；对夹连接阀门结构长度如图3所示。4.3 结构长度尺寸4.3.1 法兰连接

5、阀门结构长度基本系列见表1。(中心-面)结构长度(中心-面)结构长度(面-面)结构长度lllllll 图1 直通式阀门结构长度 图2 角式阀门结构长度l图3 对夹连接阀门结构长度表1 法兰连接阀门结构长度基本系列 单位为毫米 公称通径DN基 本 系 列 代 号1234578a9a1011a12131415181921222324a结 构 长 度1013021010210885105130801513021010814016510890105108571308015217083201502301171521901179511511764130901781909525160230127165216

6、127100115127701401201002162101083218026014017822914610513014076165140110229230114402002601651902411591151301658216510614024012024126012150230300178216292190125150203102203108150250135216267250300146652903401902413302161451702161082221121702701652412922803401658031038020328335625415519024112124111418

7、028018528331831039017810035043022930543230517521529214630512719030030535635045021612540050025438150835620025033017835614020032538140040052525415048055026740355940622527535620339414021035040344445060027920060065029241966052127532549524845715223040041953355075033025073077533045778763532562231153316525

8、045045762265039430085090035650283874937569835061017827050050271175041935098010253817628894257873946861902905505728388504001100115040683899147591445776221631060061086495045012001275432914109297886422233065066097810505001250140045799111949789142293507007111016115060014501650508114313971295106726739080

9、07871346135070016506101346154914482924309001499145080018506601956318470100017781650900205071119563305101100208310002250811410550120012004706301400530710160060079018006708702000760950220080010002400850110026009001200280095013003000100014003200110034001200360012003800120040001300 注1：代号系列注上角标a的为角式阀门的结构

10、长度，未注上角标的为直通式的结构长度。 注2：结构长度的极限偏差见表21。4.3.2 直通式焊接端阀门结构长度基本长度系列见表2。表2 直通式焊接端阀门结构长度基本系列 单位为毫米 公称通径DN基 本 系 列 代 号H1H2H3H4H5H6H7H8H9H10H11H12H13H14H15H16H17H18H19H20H21结 构 长 度61021021015108140165165216264108140152140140201171521901902292292731171521781521522512716521613321614025414025418630812716520321616

11、519032140178229146229165279165279232349140184216229178401651902411522411783051783053841652032292411901902415021621629217829221636821636827945120322926726721621623026728365241241330216330254419254419330508216279292292241241290305330802832833562543563053813054703685782413183183182832833103303871003053

12、054063054323564574065464576732923683563563053053503564575591253813814573815084325594836735337943564004003814003811504034034954575595086105597056109144064704444444034574804575597112004194195975846606607377118327621022495597559533419521600521686845250457457673711787787838864991914127062267362262245755

13、973055982688930050250276281383891496599111301041142269877571171150263585063596510163505727628268898899911029106712571118787838572762980762400610838902991991109211301194138412459148646108381100838450660914978109210921219134615371397978978660914914500711991105411941194132114731664101671199199155076210

14、9211431295106711181092109260081311431232139713971549194312951346813114311436508641245130814481245124570091413461397154914481499134613467501397152416511524159413971397800965152416511778152415248501016162617781930162616269001727188020831996208317271727 注：结构长度极限偏差见表22。4.3.3 角式焊接端阀门结构长度基本系列见表3。表3 角式焊接端阀

15、门结构长度基本系列 单位为毫米 公称通径DN基 本 系 列 代 号H22H23H24H25H26H27H28H29H30结 构 长 度65110155776838310813220648995951141141372570102108108127127154327610811411414014017540831141211211521521925010213314610814618418422565108146165127165210210254801211591781521781521902352891001461782031782161782292733371251782002292162

16、54216279336397150203222248254279254305352457200248279298330330368416511250311311337394394419495635300349356381419457483565711350394495514629400457660450483737500826550600991650700750800850900 注：结构长度极限偏差见表22。4.3.4 对夹连接阀门结构长度基本系列见表4。表4 对夹连接阀门结构长度基本系列 单位为毫米 公称通径DN基 本 系 列 代 号J1J2J3J4J5J6J7J8J9J10J11J12J

17、13J14J15J16J17J18结 构 长 度10601516256065201931.5252235.56580322840809040333331.5459011550434360606060707070405611514048404065464666666666838383466314016080496449737373738650711601805150501005256567979102102105608012556647064901105715070767098981371371591591591061256060200607189114711271271611612062062

18、061401607025068767614614621321324124825420070703007883831811812292292923053052507680350921271271842222732733563562808092400102102140152140190232305305384384891204501141141602032643623624514689050012712717021929236836853311413255015460015417820022231739443849555911410013265016570022975019030536846050

19、5800241900203368483635635100021630012002543505246291400279390160031844018003564902000406540 注：尺寸极限偏差DN900为±2mm，DN10002000为±3mm。4.3.5 内螺纹连接阀门结构长度基本系列见表5表5 内螺纹连接阀门结构长度基本系列 单位为毫米 公称通径DN基 本 系 列 代 号N1N2N3N4N5N6N7N8N9N10N11N12N13N14N15N16N17N18结 构 长 度646488501048568080808080801542505256606565656

20、880909090909090909020456060676570758578901001001001001001001001002552657078758090110861101151201101201201101201203255758088859010512010013013014012013014012014013040608586104951001201401061501501701351401701351701505070951041201101101401651301701802001701702001551801706582115120130165203220190260809

21、0130254250290100110145300注1：适用于直通式和角式结构。注2：结构长度的极限偏差为±1.6mm4.3.6 外螺纹连接阀门结构长度基本系列见表6。表6 外螺纹连接阀门结构长度基本系列 单位为毫米 公称通径DN基 本 系 列 代 号W1W2W3W4结 构 长 度直 通 式角 式37080354061090100455015100110505520110130556525130140657032145160804015018090 注：结构长度的极限偏差为±1.6mm4.3.7 法兰连接闸阀结构长度见表7。表7 法兰连接闸阀结构长度 单位为毫米 公称通径D

22、N公 称 压 力 PN/MPa1.02.52.55.0仅适用于2.54106.31016结 构 长 度短长1010215108140140165170201171521521901902512716516521621032140178178229230401652401902401902412605017825021625021629225030065190270241270241330280340802032802832802833563103901002293003053003054323504501252543253813253815084005251502673504033504035

23、5945060020029240041940041966055075025033045045745045778765030035650050250050283875035038155076255057288985040040660083860061099195045043265091465066010921050500457700991700711119411506005088001143800787139713507006109001450800660100016509007111100100081112001200101514001080160013001800150020001675基本

24、系列3154154/1952223 注：表中的黑体字表示的尺寸为优先选用。4.3.8 对夹连接刀形闸阀结构长度见表8表8 对夹连接刀形闸阀结构长度 单位为毫米 公称通径DN公 称 压 力 PN2.0 MPa结 构 长 度504840406580515050100125571506060200702507070300768035080924008912045090500114132600100基本系列J16J17J18 注：结构长度的极限偏差为±1.6mm4.3.9 焊接端闸阀结构长度见表9。表9 焊接端闸阀结构长度 单位为毫米 公称通径DN公 称 压 力 PN/MPa1.02.02.

25、55.06.310.015.0、16.025.032.0、42.0结 构 长 度短长短长短长短长610210151081401651652642011715219019027325127165216133216140254140254186308321401782291462291652791652792323494016519024115224117830517830538450216216292178292216368216368279451652412413302163302544192544193305088028328335625435630538130547036857810030

26、530540630543235645740654645767312538138145738150843255948367353379415040340649545755950861055970561091420041941959758466066073771183276210222504574576737117877878388649919141270300502502762813838914965991113010411422350572762826889889991102910671257111840061083890299199110921130119413841245450660914

27、9781092109212191346153713975007119911054119411941321147316645507621092114312956008131143123213971397154919436508641245130814487009141346139715497501397152416518009651524165117788501016162617781930900172718802083基本系列H1H2H3H4H5H6H7H8H9H10H11 注：结构长度的偏差见表22。4.3.10 蝶阀和蝶式止回阀结构长度见表10。表10 蝶阀和蝶式止回阀结构长度 单位为毫米

28、 公称通径DN双法兰连接结构长度对夹式连接结构长度公 称 压 力 PN/MPa2.02.52.54.0短长短中长4010614033335010815043436511217046468011418049644910012719052565612514020056647064150140210707670200152230607189712501652506876114763001782707883833501902909212712740021631010210214014045022233011411415216050022935012712717055015460026739015417

29、8200650165700292430229750190800318470241900330510203200100041055021630012004706302542763601400530710279390160060079031844018006708703564902000760950406540220080010005902400850110065026009001200700280095013007603000100014008103200110087034001200360012003800120040001300基本系列1314J1J2J3J2/J4 注：表中的黑体字表示的尺

30、寸为优先选用。4.3.11 法兰连接球阀和旋塞阀结构长度见表11。表11 法兰连接球阀和旋塞阀结构长度 单位为毫米 公称通径DN公 称 压 力 PN/MPa1.02.52.55.06.310.0结 构 长 度短中长短长b1010213013013015108130130140130165201171301501521501902512714016016516021632140165180178180229401651652001902002415017820323021623029229265190222290241290330330802032413102833103563561002293

31、05350305350406432125245356400381400508150267394480403480495559200292457600419(502)a600597660250330533730457(568)s730673787300356610850502(648)a85076283835038168698076298082688940040676211008381100902991450432864120091412009781092500457914125091912501054119460050810671450114314501232139770013971700基本

32、系列31214155注1：不适用于公称通径大于40mm以上的上装式全通径球阀以及公称通径大于300mm的旋塞阀和全通径球阀。注2：表中的黑体字表示的尺寸为优先选用。a 用于全通径球阀。b 仅适用于球阀。4.3.12 焊接端球阀结构长度见表12。表12 焊接端球阀结构长度 单位为毫米 公称通径DN公 称 压 力 PN/MPa1.0、1.6、2.02.5、4.0、5.06.310.015.0、16.025.032.0、42.0结 构 长 度短中长短中长短中长15140140165165201521521901902516516521621625432178178229229279401901901

33、901902412413053055021621623021621623021623029229236836845165241241290241241290241290330330419419508802832833102832833102833103563563814705781003053053503053053503053504064324575466731253814003814003814005085596731504034574804034574804034804955596107059142004195216004195216004196005976607378321022250

34、457559730457559730457730673787838991127030050263585050263585050285076283896511301422350572762980572762980762980826889102912574006108381100610838110083811009029911130138445066091466091497810921219500711991711991105411941321550109210921143129560081311438131143123213971549650124512451308144870013461346

35、139715497501397139715241651800152415241651177885016261626177819309002083208318802083基本系列H16H17H18H16H17H18H2H18H3H5H7H9H114.3.13 焊接端旋塞阀结构长度见表13。表13 焊接端旋塞阀结构长度 单位为毫米 公称通径DN公 称 压 力 PN/MPa1.02.02.5、4.0、5.06.310.015.025.032.0、42.0结 构 长 度短长短长151652019025190216216254254308322292292792793494024124124130530538450267267283292292368368451653053053303303304194195088