GB12221-2005T金属阀门结构长度

11范围本标准规定了法兰连接阀门的结构长度、焊接端阀门的结构长度、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PN420MPA，公称通径DN3MMDN4000MM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/T1047管道元件DN（公称尺寸）的定义和选用（GB/T10472005，ISO67081995，MOD）GB/T1048管道元件PN（公称压力）的定义和选用（GB/T10482005，ISO72681996，MOD）3术语31直通式阀门结构长度THROUGHWAYTYPEOFVALVESFACETOFACE，ENDTOEND,CENTERTOFACEANDCENTERTOENDDIMENSIONS在阀体通道终端两个垂直于阀门轴线平面之间的距离。32角式阀门结构长度ANGLETYPEOFVALVESFACETOFACE，ENDTOEND，CENTERTOFACEANDCENTERTOENDDIMENSIONS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。33对夹式阀门WAFERTYPEVALVES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。20050221发布20050801实施中华人民共和国国家标准金属阀门结构长度METALVALVESFACETOFACE，ENDTOEND，CENTERTOFACEANDCENTERTOENDDIMENSIONS（ISO57521982，METALVALVESFORUSEINFLANGEDPIPESYSTEMSFACETOFACEANDCENTERTOFACEDIMENSIONS，MOD）GB/T122212005代替GB/T122211989，GB/T1518811518841994GB/T12221200524结构长度尺寸与极限偏差41公称通径数值按GB/T1047的规定；公称压力数值按CB/T1048的规定。42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。43结构长度尺寸431法兰连接阀门结构长度基本系列见表1。图1直通式阀门结构长度图2角式阀门结构长度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中心面结构长度中心面结构长度面面结构长度LLLLLLLGB/T1222120053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基本系列代号1234578A9A1011A12131415181921222324A公称通径DN结构长度1013021010210885105130801513021010814016510890105108571308015217083201502301171521901179511511764130901781909525160230127165216127100115127701401201002162101083218026014017822914610513014076165140110229230114402002601651902411591151301658216510614024012024126012150230300178216292190125150203102203108150250135216267250300146652903401902413302161451702161082221121702701652412922803401658031038020328335625415519024112124111418028018528331831039017810035043022930543230517521529214630512719030030535635045021612540050025438150835620025033017835614020032538140040052525415048055026740355940622527535620339414021035040344445060027920060065029241966052127532549524845715223040041953355075033025073077533045778763532562231153316525045045762265039430085090035650283874937569835061017827050050271175041935098010253817628894257873946861902905505728388504001100115040683899147591445776221631060061086495045012001275432914109297886422233065066097810505001250140045799111949789142293507007111016115060014501650508114313971295106726739080078713461350700165061013461549144829243090014991450800185066019563184701000177816509002050711195633051011002083100022508114105501200120047063014005307101600600790180067087020007609502200800100024008501100LGB/T122212005426009001200280095013003000100014003200110034001200360012003800120040001300注1代号系列注上角标A的为角式阀门的结构长度，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。432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基本系列代号H1H2H3H4H5H6H7H8H9H10H11H12H13H14H15H16H17H18H19H20H21公称通径DN结构长度61010210215108140165165216264108140152140140201171521901902292292731171521781521522512716521613321614025414025418630812716520321616519032140178229146229165279165279349140184216229178401651902411522411783051783052323841652032292411901902415021621629217829221636821636827945120322926726721621623026728365241241330216330254419254419330508216279292292241241290305330802832833562543563053813054703685782413183183182832833103303871003053054063054323564574065464576732923683563563053053503564575591253813814573815084325594836735337943564004003814003811504034034954575595086105597056109144064704444444034574804575597112004194195975846606607377118327621022495597559533419521600521686845250457457673711787787838864991914127062267362262245755973055982688930050250276281383891496599111301041142269877571171150263585063596510163505727628268898899911029106712571118787838572762980762400610838902991991109211301194138412459148646108381100838450660914978109210921219134615371397978660914914500711991105411941194132114731664978101671199199155076210921143129510671118109210926008131143123213971397154919431295134681311431143GB/T12221200556508641245130814481245124570013461397154914481499134613467509141397152416511524159413971397800965152416511778152415248501626177819301626162690010161727188020831996208317271727注结构长度极限偏差见表22。433角式焊接端阀门结构长度基本系列见表3。表3角式焊接端阀门结构长度基本系列单位为毫米基本系列代号H22H23H24H25H26H27H28H29H30公称通径DN结构长度6105115577683831081322064899595114114137257010210810812712715432761081141141401401754083114121121152152192501021331461081461841842256510814616512716521021025480121159178152178152190235289100146178203178216178229273337125178200229216254216279336397150203222248254279254305352457200248279298330330368416511250311311337394394419495635300349356381419457483565711350394495514629400457660450483737500826550600991GB/T1222120056650700750800850900注结构长度极限偏差见表22。434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基本系列代号J1J2J3J4J5J6J7J8J9J10J11J12J13J14J15J16J17J18公称通径DN结构长度1060151625606520193152522355658032284080904033333154590115504343606060607070704056115140486546666666668346631401604040804649497373838386507116018010052566456737379791021021056080511256470649011050501505670767098981371371591591591061255720060717112712716116120620620614016060602506876891147614614621321324124825420070703008383181181229229292305305250708035078921271271842222732733563562807692400102102140190232305305384384804501141141401521602032643623624688912050012712717021929236836845153311490132550600154154178200222317394438495559114100132650700165229750190305368460505GB/T1222120057800900203241368483635635100021630012002543505246291400279390160031844018003564902000406540注尺寸极限偏差DN900为2MM，DN10002000为3MM。435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基本系列代号N1N2N3N4N5N6N7N8N9N10N11N12N13N14N15N16N17N18公称通径DN结构长度6846481048505680808080808015425052566065656568809090909090909090204560606765707585789010010010010010010010010025526570787580901108611011512011012012011012012032557580888590105120100130130140120130140120140130406085861049510012014010615015017013514017013517015050709510412011011014016513017018020017017020015518017065821151201301652032201902608090130254250290100110145300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16MM436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基本系列代号W1W2W3W4结构长度公称通径DN直通式角式3670803540GB/T12221200581090100455015100110505520110130556525130140657032145160804015018090注结构长度的极限偏差为16MM437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压力PN/MPA10252550仅适用于25410631016结构长度公称通径DN短长1010215108140140165170201171521521901902512716516521621032140178178229230401652401902401902412605017825021625021629225030065190270241270241330280340802032802832802833563103901002293003053003054323504501252543253813253815084005251502673504033504035594506002002924004194004196605507502503304504574504577876503003565005025005028387503503815507625505728898504004066008386006109919504504326509146506601092105050045770099170071111941150600508800114380078713971350700610900145080066010001650GB/T12221200599007111100100081112001200101514001080160013001800150020001675基本系列3154154/1952223注表中的黑体字表示的尺寸为优先选用。438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压力PN20MPA公称通径DN结构长度504865404080100511255050150572006060250707030070803507692400804508912050090600114100132基本系列J16J17J18注结构长度的极限偏差为16MMGB/T12221200510439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压力PN/MPA1020255063100150、160250320、420结构长度公称通径DN短长短长短长短长610102151081401651652642011715219019027325127165216133216140254140254186308321401782291462291652791652793494016519024115224117830517830523238450216216292178292216368216368279451652412413302163302544192544193305088028328335625435630538130547036857810030530540630543235645740654645767312538138145738150843255948367353379415040340649545755950861055970561091420041941959758466066073771183276210222504574576737117877878388649919141270300502502762813838914965991113010411422350572762826889889991102910671257111840061083890299199110921130119413841245450660914978109210921219134615371397500711991105411941194132114731664550762109211431295600813114312321397139715491943GB/T122212005116508641245130814487001346139715497509141397152416518009651524165117788501626177819309001016172718802083基本系列H1H2H3H4H5H6H7H8H9H10H11注结构长度的偏差见表22。4310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双法兰连接结构长度对夹式连接结构长度公称压力PN/MPA20252540公称通径DN短长短中长4010614033335010815043436511217046801141804649491001271905256645612514020064706415014021056707670200152230607189712501652506876763001782708311483350190290789212712740021631010210214014045022233011411416050022935012712715217055060026739015415417820065070029243016522975080031847019090033051020320024110004105502163001200470630254276360140053071027939016006007903184401800670870356490200076095040654022008001000590GB/T122212005122400850110065026009001200700280095013007603000100014008103200110087034001200360012003800120040001300基本系列1314J1J2J3J2/J4注表中的黑体字表示的尺寸为优先选用。4311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压力PN/MPA1025255063100结构长度公称通径DN短中长短长B101021301301301510813013014013016520117130150152150190251271401601651602163214016518017818022940165165200190200241501782032302162302922926519022229024129033033080203241310283310356356100229305350305350406432125245356400381400508150267394480403480495559200292457600419502A600597660250330533730457568S730673787300356610850502648A850762838350381686980762980826889400406762110083811009029914504328641200914120097810925004579141250919125010541194GB/T1222120051360050810671450114314501232139770013971700基本系列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。4312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压力PN/MPA10、16、2025、40、5063100150、160250320、420结构长度公称通径DN短中长短中长短中长15140140165165201521521901902516516521621625432178178229229279401901901901902412413053055021621623021621623021623029229236836845165241241290241241290241290330330419419508802832833102832833102833103563563814705781003053053503053053503053504064324575466731253814003814003814005085596731504034574804034574804034804955596107059142004195216004195216004196005976607378321022250457559730457559730457730673787838991127030050263585050263585050285076283896511301422350572762980572762980762980826889102912574006108381100610838110083811009029911130138445066091466091497810921219GB/T12221200514500711991711991105411941321550109210921143129560081311438131143123213971549650124512451308144870013461346139715497501397139715241651800152415241651177885016261626177819309002083208318802083基本系列H16H17H18H16H17H18H2H18H3H5H7H9H114313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压力PN/MPA102025、40、5063100150250320、420结构长度公称通径DN短长短长151652019025190216216254254308322292292792793494024124124130530538450267267283292292368368451653053053303303304194195088033033038735635638147157810035635645740655943245754667312538138145750855967379415045745755949571155961070591420052152168659784566073783210222505595598266738897878389911270300635635965762101683896511301422350762826889125740083890299111301384450914978109215375009911054119413211664GB/T12221200515550109211431295600114312321397194365012451308144870013461397750139715241651800152416511778850162617781930900172718802083基本系列H19H19H20H3H21H5H7H9H114314法兰连接截止阀、节流阀及止回阀结构长度见表14表14法兰连接截止阀门、节流阀及止回阀结构长度单位为毫米公称压力PN/MPA1020255010010202563100直通式角式公称通径DN短长短长短长短长短长1013013085851510813015213016521057909083105201171501781501906495959525127160216160216230701001001081153214018022918022976105105114130401652002412002412608211511512113050203230267230292300102125125146150652162902922903303401081451451651708024131031831035638012115515517819010029235035635043243014617517521621512533040040040050850017820020025425015035648044448055955020322522527927520049560053360066065024827527533032525062273062273078777531132532539430069885071185083890035037537541935078798083898088910253944254254009141100864110099111504574754754509781200978120010921275483500500GB/T12221200516500978125010161250119414006001295145013461450139716507001448900A16501499165015498001000A18501778185090019561100A20502083205010001200A22502250基本系列101211521188249A仅适用于多辨旋启式止回阀。4315焊接端直通式截止阀、节流阀及止回阀结构长度见表15。表15焊接端直通式截止阀、节流阀及止回阀结构长度单位为毫米公称压力PN/MPA1020255063100150、160250320、420结构长度公称通径DN短长AB短长短长短长短长610102151081401521401651652162642011715217815219019022922927325127165203216216133216254254308321401842162292291462292792793494016520322924124115224130530538450203229267267292178292368216368279451652162792922923302163302544192544193305088024131831831835625435630538130547036857810029236835635640630543235645740654645767312535640040045738150843255948367353379415040647044444449545755950861055970561091420049559755953359758466066073771183276210222506226736226226737117877878388649919141270300698775711711732813838914965991113010411422350787838826889991102910671257400914864902991109211301194138445097897810921219153750097810131054119413211664GB/T122212005175501067111811431295600123213971549194365012951346130814487001448149913971600C7501524159415241651800208316518501778900199618802083基本系列H12H13H14H15H3H4H5H6H7H8H9H10H11A仅适用于截止阀、升降式止回阀。B仅适用于旋启式止回阀。C此值与基本系列不同，仅适用于截止阀和止回阀。4316焊接端角式截止阀、节流阀及止回阀结构长度见表16。表16焊接端角式截止阀、节流阀及止回阀结构长度单位为毫米公称压力PN/MPA1020255063100150、160250320420结构长度公称通径DN短长短长6105115577683831081322064899595114114137257010210810812712715432761081141141401401754083114121121152152192501021331461081461841842256510814616512716521021025480121159178152178152190235289100146178203178216178229273337125178200229216254216279336397150203222248254279254305352457GB/T122212005182002482792983303303684165112503113113373943944194