GB T12221-2005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/T1518811518841994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GB/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角式阀门结构长度图3对夹连接阀门结构长度中心面结构长度中心面结构长度面面结构长度LLLLLLLLGB/T1222120053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101302101021088510513080151302101081401651089010510857130801521708320150230117152190117951151176413090178190952516023012716521612710011512770140120100216210108321802601401782291461051301407616514011022923011440200260165190241159115130165821651061402401202412601215023030017821629219012515020310220310815025013521626725030014665290340190241330216145170216108222112170270165241292280340165803103802032833562541551902411212411141802801852833183103901781003504302293054323051752152921463051271903003053563504502161254005002543815083562002503301783561402003253814004005252541504805502674035594062252753562033941402103504034444506002792006006502924196605212753254952484571522304004195335507503302507307753304577876353256223115331652504504576226503943008509003565028387493756983506101782705005027117504193509801025381762889425787394686190290550572838850400110011504068389914759144577622163106006108649504501200127543291410929788642223306506609781050500125014004579911194978914229350700711101611506001450165050811431397129510672673908007871346135070016506101346154914482924309001499145080018506601956318470100017781650900205071119563305101100208310002250811410550120012004706301400530710160060079018006708702000760950220080010002400850110026009001200280095013003000100014003200110034001200360012003800120040001300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。GB/T1222120054432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610102102151081401651652162641081401521401402011715219019022922927311715217815215225127165216133216140254140254186308127165203216165190321401782291462291652791652793491401842162291784016519024115224117830517830523238416520322924119019024150216216292178292216368216368279451203229267267216216230267283652412413302163302544192544193305082162792922922412412903053308028328335625435630538130547036857824131831831828328331033038710030530540630543235645740654645767329236835635630530535035645755912538138145738150843255948367353379435640040038140038115040340349545755950861055970561091440647044444440345748045755971120041941959758466066073771183276210224955975595334195216005216868452504574576737117877878388649919141270622673622622457559730559826889300502502762813838914965991113010411422698775711711502635850635965101635057276282688988999110291067125711187878385727629807624006108389029919911092113011941384124591486461083811008384506609149781092109212191346153713979786609149145007119911054119411941321147316649781016711991991550762109211431295106711181092109260081311431232139713971549194381311431143650864124513081448129513461245124570013461397154914481499134613467509141397152416511524159413971397800965152416511778152415248501626177819301626162690010161727188020831996208317271727注结构长度极限偏差见表22。GB/T1222120055433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6105115577683831081322064899595114114137257010210810812712715432761081141141401401754083114121121152152192501021331461081461841842256510814616512716521021025480121159178152178152190235289100146178203178216178229273337125178200229216254216279336397150203222248254279254305352457200248279298330330368416511250311311337394394419495635300349356381419457483565711350394495514629400457660450483737500826550600991650700750800850900注结构长度极限偏差见表22。GB/T1222120056434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106015162560652019315252235565803228408090403333315459011550434360606060707070405611514048654666666666834663140160404080464949737383838650711601801005256645673737979102102105608051125647064901050501505670767098981371371591591591061255720060717112712716116120620620614016060602506876891147614614621321324124825420070703008383181181229229292305305250708035078921271271842222732733563562807692400102102140190232305305384384804501141141401521602032643623624688912050012712717021929236836845153311490132550600154154178200222317394438495559114100132650700165229750305368460505800190900203241368483635635100021630012002543505246291400279390160031844018003564902000406540注尺寸极限偏差DN900为2MM，DN10002000为3MM。GB/T1222120057435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36708035401090100455015100110505520110130556525130140657032145160804015018090注结构长度的极限偏差为16MMGB/T1222120058437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10102151081401401651702011715215219019025127165165216210321401781782292304016524019024019024126050178250216250216292250300651902702412702413302803408020328028328028335631039010022930030530030543235045012525432538132538150840052515026735040335040355945060020029240041940041966055075025033045045745045778765030035650050250050283875035038155076255057288985040040660083860061099195045043265091465066010921050500457700991700711119411506005088001143800787139713507006109001450800660100016509007111100100081112001200101514001080160013001800150020001675基本系列3154154/1952223注表中的黑体字表示的尺寸为优先选用。GB/T1222120059438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6101021510814016516526420117152190190273251271652161332161402541402541863083214017822914622916527916527934940165190241152241178305178305232384502162162921782922163682163682794516524124133021633025441925441933050880283283356254356305381305470368578100305305406305432356457406546457673125381381457381508432559483673533794150403406495457559508610559705610914200419419597584660660737711832762102225045745767371178778783886499191412703005025027628138389149659911130104114223505727628268898899911029106712571118400610838902991991109211301194138412454506609149781092109212191346153713975007119911054119411941321147316645507621092114312956008131143123213971397154919436508641245130814487001346139715497509141397152416518009651524165117788501626177819309001016172718802083基本系列H1H2H3H4H5H6H7H8H9H10H11注结构长度的偏差见表22。GB/T122212005114310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40106140333350108150434365112170468011418046494910012719052566456125140200647064150140210567076702001522306071897125016525068767630017827083114833501902907892127127400216310102102140140450222330114114160500229350127127152170550600267390154154178200650700292430165229750800318470190900330510203200241100041055021630012004706302542763601400530710279390160060079031844018006708703564902000760950406540220080010005902400850110065026009001200700280095013007603000100014008103200110087034001200360012003800120040001300基本系列1314J1J2J3J2/J4注表中的黑体字表示的尺寸为优先选用。GB/T122212005124311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B101021301301301510813013014013016520117130150152150190251271401601651602163214016518017818022940165165200190200241501782032302162302922926519022229024129033033080203241310283310356356100229305350305350406432125245356400381400508150267394480403480495559200292457600419502A600597660250330533730457568S730673787300356610850502648A85076283835038168698076298082688940040676211008381100902991450432864120091412009781092500457914125091912501054119460050810671450114314501232139770013971700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。GB/T122212005134312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15140140165165201521521901902516516521621625432178178229229279401901901901902412413053055021621623021621623021623029229236836845165241241290241241290241290330330419419508802832833102832833102833103563563814705781003053053503053053503053504064324575466731253814003814003814005085596731504034574804034574804034804955596107059142004195216004195216004196005976607378321022250457559730457559730457730673787838991127030050263585050263585050285076283896511301422350572762980572762980762980826889102912574006108381100610838110083811009029911130138445066091466091497810921219500711991711991105411941321550109210921143129560081311438131143123213971549650124512451308144870013461346139715497501397139715241651800152415241651177885016261626177819309002083208318802083基本系列H16H17H18H16H17H18H2H18H3H5H7H9H11GB/T122212005144313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151652019025190216216254254308322292292792793494024124124130530538450267267283292292368368451653053053303303304194195088033033038735635638147157810035635645740655943245754667312538138145750855967379415045745755949571155961070591420052152168659784566073783210222505595598266738897878389911270300635635965762101683896511301422350762826889125740083890299111301384450914978109215375009911054119413211664550109211431295600114312321397194365012451308144870013461397750139715241651800152416511778850162617781930900172718802083基本系列H19H19H20H3H21H5H7H9H11GB/T122212005154314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1013013085851510813015213016521057909083105201171501781501906495959525127160216160216230701001001081153214018022918022976105105114130401652002412002412608211511512113050203230267230292300102125125146150652162902922903303401081451451651708024131031831035638012115515517819010029235035635043243014617517521621512533040040040050850017820020025425015035648044448055955020322522527927520049560053360066065024827527533032525062273062273078777531132532539430069885071185083890035037537541935078798083898088910253944254254009141100864110099111504574754754509781200978120010921275483500500500978125010161250119414006001295145013461450139716507001448900A16501499165015498001000A18501778185090019561100A20502083205010001200A22502250基本系列101211521188249A仅适用于多辨旋启式止回阀。GB/T122212005164315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6101021510814015214016516521626420117152178152190190229229273251271652032162161332162542543083214018421622922914622927927934940165203229241241152241305305384502032292672672921782923682163682794516521627929229233021633025441925441933050880241318318318356254356305381305470368578100292368356356406305432356457406546457673125356400400457381508432559483673533794150406470444444495457559508610559705610914200495597559533597584660660737711832762102225062267362262267371178778783886499191412703006987757117117328138389149659911130104114223507878388268899911029106712574009148649029911092113011941384450978978109212191537500978101310541194132116645501067111811431295600123213971549194365012951346130814487001448149913971600C7501524159415241651800208316518501778900199618802083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。GB/T122212005174316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610511557768383108132206489959511411413725701021081081271271543276108114114140140175408311412112115215219250102133146108146184184225651081461651271652102102548012115917815217815219023528910014617820317821617822927333712517820022921625421627933639715020322224825427925430535245720024827929833033036841651125031131133739439441949