蝶式止回阀

对夹双瓣式蝶形止回阀

对夹式蝶型止回阀-H71H对夹式蝶型止回阀微阻缓闭蝶式止回阀蝶型双瓣式止回阀H76XH蝶式止回阀-H76H蝶式止回阀蝶式缓冲止回阀

蝶式缓冲止回阀一、概述：止回阀安装在管路系统，其主要作用是防止介质倒流，止回阀是一种依靠介质压力开启和关闭的自动阀门。以往国内普遍采用的是H44型法兰连接旋启式止回阀和H41型法兰连接升降式止回阀，这种传统的止回阀体积笨大，流体阻力大，阀门关闭时水锤压力高，安装、维修难，使用寿命短。我公司针对传统结构止回阀存在的问题，以美国API标准和德国DIN标准为依据，结合我公司多年来在阀门试验研究、开发设计、加工制造等方面的丰富经验，研制开发了H76型对夹双瓣旋启式止回阀和H71型对夹式升降式止回阀系列产品，经石化、冶金、电力、轻工、食品等行业的企业和设备配套厂家的多年使用，效果良好，深受用户好评。二、结构特点：1、结构长度短，其结构长度只有传统法兰止回阀的1/4～1/8；2、体积小、重量轻，其重量只有传统法兰止回阀的1/4～1/20；3、阀瓣关闭快速，水锤压力小；4、水平管道或垂直管道均可使用，安装方便；5、流道通畅、流体阻力小；6、动作灵敏、密封性能好；7、阀瓣行程短、关阀冲击力小；8、整体结构、简单紧凑、造型美观；9、使用寿命长、可靠性高。公称压力型号H76H-CPN1.0MPa、PN1.6MPa、PN2.5MPa、PN4.0MPa、PN6.4MPa、PN10.0MPaH76W-PH76W-P8H76W-P3H76W-RH76W-R8H76W-R3阀体主要零件材料阀轴弹簧适用工况适用温度(℃)阀瓣WCB(A105)ZG1Cr18Ni9TiCF8(304)CF8(304L)ZG1Cr18Ni12Mo2TiCF82Cr130Cr18Ni9水、CF8CF8CF3CF8MCF8M(316)CF8MCF3M(316L)CF3M1Cr18Ni9Ti0Cr18Ni900Cr19Ni101Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni14Mo20Cr18Ni90Cr18Ni900Cr19Ni10强氧化性介质-196～4250Cr17Ni12Mo20Cr17Ni12Mo200Cr17Ni14Mo2尿素等腐蚀性介质-196～455适用介质蒸汽、油品等-29～425等腐蚀性介质醋酸等腐蚀性介质-196～0-196～0三、蝶式缓冲止回阀主要外形尺寸：口径压力级尺寸（mm）重量螺栓孔中心圆直径D1螺栓数量配管法兰（供参考）螺栓直径din5/85/85/85/83/43/43/47/87/81111/811/811/43/43/43/47/8111/85/83/4mmM16M16M16M16M20M20M20M24M24M27M27M30M30M33M20M20M20M24M27M30M16M20螺栓长度L1RF14015016017019020524027031032534036538055600625740155175RJ155165175185205220255285325340355380400420------175195NPSDNLDD3D2（kg）221/2345681012Class150PN2.0MPa14161820242830323248Class300PN5.0MPa221/250658010012515020025030035040045050060070075080090010501200506560677373869812714618118419120321922230530530536843252460671031221351731952202773374074485127604715773824878311421302110128567388108132160210266310350555056057007508009101055120558735165801021271522032305350400450500600700746796810501200516523468132539801171381633313804255600960140034120.5139.5152.5190.5216.0241.5298.5362.0432.0476.00.0578.0635.0749.5795.5846.0900.01009.51171.51335.0127.0149.044488881212121616202040444844484488345681012141618202430324880100125150200250300350400450500600750900105012007373869812714618122223222923183684835686291471792142493053594204835375946527728821044119613658810813216021026631035055505608740880104511908010212715220323053504004505006007358731035117968151831517711719020026106601020102260168.5200.0235.0270.0330.0387.51.0514.5571.5628.5686.0813.0921.010.01244.51416.08881212161620202424243632303/43/43/43/47/8111/811/811/411/411/411/213/815/813/417/8M20M20M20M20M24M27M30M30M33M33M33M39M36M42M45M481901952152302803153610437551056065080092010102102152352503003353830455535585-----订货须知：一、①蝶式缓冲止回阀产品名称与型号②蝶式缓冲止回阀口径③蝶式缓冲止回阀是否带附件二、若已经由设计单位选定公司的蝶式缓冲止回阀型号，请按蝶式缓冲止回阀型号三、当使用的场合非常重要或环境比较复杂时,请您尽量提供设计图纸和详细参数，相关产品：对夹双瓣旋启式止回阀对夹式升降止回阀对夹式高压止回阀WM400系列止回阀滑道滚球式止回阀微阻缓闭蝶式止回阀卧立两用球面止回阀蝶型缓闭止回阀对夹式止回阀微阻球形止回阀对夹旋启式止回阀橡胶瓣止回阀节能消声止回阀静音止回阀静音式止回阀对夹式静音止回阀立式止回阀微阻缓闭止回阀止回阀>>蝶式止回阀>>蝶式止回阀产品名称：蝶式止回阀产品型号：H76H产品口径：DN25～DN300产品压力：0.6～4.0MPa产品材质：铸钢、不锈钢、合金钢等生产标准：国家标准GB、机械标准JB、化工标准HG、美标API、ANSI、德标DIN、日本JIS、JPI、英标BS生产。阀体材质：铜、铸铁、铸钢、碳钢、WCB、WC6、WC9、20#、25#、锻钢、A105、F11、产品概括：F22、不锈钢、304、304L、316、316L、铬钼钢、低温钢、钛合金钢等。工作压力1.0Mpa-50.0Mpa。工作温度：-196℃-650℃。连接方式：内螺纹、外螺纹、法兰、焊接、对焊、承插焊、卡套、卡箍。驱动方式：手动、气动、液动、电动。产品详细信息产品介绍：

蝶形止回阀是指依靠介质本身流动而自动开、闭阀瓣，用来防止介质倒流的阀门。对夹连接蝶式止回阀的作用是只允许介质向一个方向流动，而且阻止方向流动。应用范围：

蝶式止回阀用于纯净管路及工业、环保、水处理、高层建筑给排水管路，阻止介质逆向流动之用。结构特点：

旋启式止回阀在完全打开的状况下，流体压力几乎不受阻碍，因此通过阀门的压力降相对较小。升降式止回阀的阀瓣座落位于阀体上阀座密封面上。此阀门除了阀瓣可以自由地升降之外，其余部分如同截止阀一样，流体压力使阀瓣从阀座密封面上抬起，介质回流导致阀瓣回落到阀座上，并切断流动。根据使用条件，阀瓣可以是全金属结构，也可以是在阀瓣架上镶嵌橡胶垫或橡胶环的形式。像截止阀一样，流体通过升降式止回阀的通道也是狭窄的，因此通过升降式止回阀的压力降比旋启式止回阀大些，而且旋启式止回阀的流量受到的很少。1、体积小，重量轻，结构紧凑、维修方便2、阀板采用对偶式，在弹簧的弹性力下矩下可自行速闭3、因速闭作用，可防止介质倒流4、阀体结构长度尺寸小，刚性好5、安全方便，可用于水平垂直两个方向安装标准规范：

设计制造标准：JB/T37结构长度标准：GB/T12221-2005连接法兰标准：GB/T9113压力温度等级：GB/T12224-2005试验检验标准：GB/T13927-2008主要尺寸及重量：

可能发生的故障、原因及消除办法：1、阀体和阀盖连接处渗漏:(1)螺母拧得不紧或松紧不均匀,可重新调整之。(2)法兰密封面上有损伤或积有污物，应进行修整密封面或清除污物。(3)垫片损坏，应更换新垫片。2、阀瓣与阀座密封面处渗漏(1)密封面间夹有污物，可清洗干净。(2)密封面有损伤，重新研磨或重新堆焊及加工。止回阀>>蝶式止回阀>>蝶型双瓣式止回阀产品名称：蝶型双瓣式止回阀产品型号：H76X/H产品口径：DN50～DN1000产品压力：1.0-32.0Mpa产品材质：铸钢、不锈钢、合金钢等生产标准：国家标准GB、机械标准JB、化工标准HG、美标API、ANSI、德标DIN、日本JIS、JPI、英标BS生产。阀体材质：铜、铸铁、铸钢、碳钢、WCB、WC6、WC9、20#、25#、锻钢、A105、F11、产品概括：F22、不锈钢、304、304L、316、316L、铬钼钢、低温钢、钛合金钢等。工作压力1.0Mpa-50.0Mpa。工作温度：-196℃-650℃。连接方式：内螺纹、外螺纹、法兰、焊接、对焊、承插焊、卡套、卡箍。驱动方式：手动、气动、液动、电动。产品详细信息H76X/H蝶型双瓣式止回阀概述：本厂生产的H76X型对夹式止回阀由阀体、阀瓣、阀杆及弹簧等零件组成，采用对夹连接。由于阀瓣的关闭行程短，并且有弹簧加载，可显著减少水锤现象。该阀主要适用于城市、工业及高层建筑给水、排水管网上。由于其结构长度比一般止回阀短，对有安装空间的场所最为适用。主要零部件材料：零件名称材料对夹式止回阀主要技术参数:型号H76X-10H76X-16对夹式止回阀主要外形尺寸：公称通径DN(mm)5065801001251502002503003504004505006007008009001000L(mm)43467076114114127140152152178229241241300H(mm)607311014116821927332435184575266266727788714D(mm)1.0MPa10512414216219221827232837843840594695810916101611241.6MPa10512414216219221827332838444449555561673480491010101128公称压力PN(MPa)1.01.6强度试验压力(MPa)1.52.4密封试验压力(MPa)1.11.76适用温度≤80℃适用介质清水污水阀体铸铁、铸钢阀瓣碳钢阀杆不锈钢弹簧不锈钢阀座丁腈橡胶止回阀>>蝶式止回阀>>对夹式蝶型止回阀产品名称：对夹式蝶型止回阀产品型号：H71H产品口径：DN15～DN300产品压力：1.0-25.0Mpa产品材质：铸钢、不锈钢、合金钢等生产标准：国家标准GB、机械标准JB、化工标准HG、美标API、ANSI、德标DIN、日本JIS、JPI、英标BS生产。阀体材质：铜、铸铁、铸钢、碳钢、WCB、WC6、WC9、20#、25#、锻钢、A105、F11、产品概括：F22、不锈钢、304、304L、316、316L、铬钼钢、低温钢、钛合金钢等。工作压力1.0Mpa-50.0Mpa。工作温度：-196℃-650℃。连接方式：内螺纹、外螺纹、法兰、焊接、对焊、承插焊、卡套、卡箍。驱动方式：手动、气动、液动、电动。产品详细信息一、用途及特点H71H对夹式蝶型止回阀采用对夹式连接，结构紧凑，阀瓣沿着中心定位作升降运动，由于阀瓣的关闭行程短，并有弹簧加载，关闭速度快，可显著减少水锤现象。产品具有体积小、重量轻、动作灵敏、密封可靠、安装方便等特点，特别适合于安装空间受的场合采用，可适用于水、蒸气、油品、、醋酸、强氧化性介质等多种介质。二、执行标准设计制造：JB/T37结构长度：JB/T37配管法兰：JB/T74试验与检验：JB/T9092-1999三、主要技术参数公称压力PN（MPa）1.62.41.8WCB(C)≤425水，蒸气、油品2.53.82.8CF8(P)≤100类4.06.04.4CF8M(R)≤100醋酸类试验压力壳体试验密封试验阀体材料工作温度适用介质四、主要外形尺寸公称通径DN(mm)1520253240506580100125150200250300L2531.535.04556637180110125160200250D1.8586880901051251401601902152703303852.8586880901051251401651952252853404004．04858688090105125140165195225290350415止回阀>>蝶式止回阀>>对夹双瓣式蝶形止回阀产品名称：对夹双瓣式蝶形止回阀产品型号：H76H产品口径：DN50-300产品压力：0.6~10.0Mpa产品材质：铸钢、不锈钢、合金钢等生产标准：国家标准GB、机械标准JB、化工标准HG、美标API、ANSI、德标DIN、日本JIS、JPI、英标BS生产。阀体材质：铜、铸铁、铸钢、碳钢、WCB、WC6、产品概括：WC9、20#、25#、锻钢、A105、F11、F22、不锈钢、304、304L、316、316L、铬钼钢、低温钢、钛合金钢等。工作压力1.0Mpa-50.0Mpa。工作温度：-196℃-650℃。连接方式：内螺纹、外螺纹、法兰、焊接、对焊、承插焊、卡套、卡箍。驱动方式：手动、气动、液动、电动。产品详细信息H76系列对夹双瓣旋启式止回阀主要尺寸及重量口径压力级尺寸（mm）重量NPSDNLDD3D2螺栓孔中配管法兰（供参考）螺栓直径dii5/85/85/85/83/43/43/47/87/81111/811/811/83/43/43/47/8111/85/83/43/43/43/43/47/8111/811/811/411/411/411/2mmM16M16M16M16M20M20M20M24M24M27M27M30M30M33M20M20M20M24M27M30M16M20M20M20M20M20M24M27M30M30M33M33M33M39螺栓长度LRF1401501601701902052402703103253403653805560062574015517519019521523028031536104375510560RJ155165175185205220255285325340355380400420------------17519521021523525030033538304595535585（KG）心圆直径螺栓数量D1221/23456810Class150PN2.0MPa1214161820242830323248221/2345Class300PN5.0MPa6810121416182024506580100125150200250300350400450500600700750800900105012005065801001251502002503003504004505006006067737386981271461811841912032192223053053053684325246067737386981271461812222322292318130122135173195220277337407448512760471577382487831142130211012814717921424930535942048353759465277256738810813216021026631035055505605700750800910105512055873881081321602102663103505550560851658010212715220323053504004505006007007467968105012005165801021271522032305350400450500600234681325398011713816333138042556009601400346815183151771171902002610120.5139.5152.5190.5216.0241.5298.5362.0432.0476.00.0578.0635.0749.5795.5846.0900.01009.51171.51335.0127.0149.0168.5200.0235.0270.0330.0387.51.0514.5571.5628.0686.0813.0444888812121216162020404448444844888881212161620202424243032487009001050120036848356862988210441196136574088010451190735873103511796601020102260921.010.01244.51416.036323013/813/813/417/8M36M42M45M486508009201010--------口径压力级尺寸（mm）重量螺栓孔配管法兰（供参考）螺栓数量888881212162020202024248888812121620202020202088螺栓直径din5/83/43/47/81111/811/411/413/811/215/815/817/87/817/811/811/411/813/813/813/811/215/817/8221/27/81mmM16M20M20M24M27M27M30M33M33M36M39M42M42M8M24M27M24M30M33M30M36M36M36M39M42M48M52MM24M27螺栓长度LRF175195210235280320370440460520575650670780225250240285310304905605685790810945225250RJ180200215240285325374655255806556807902302552452903153704495565655695805825965230255NPSDNLDD3D2（KG）中心圆直径D1221/23456CLass600PNB11.0MPa810121416182024221/23456CLass900PNB15.0MPa810121416182024CLass1500PNB26.0MPa221/25056801001251502002503003504004505006005056801001251502002503003504004505006005056606773791051361652132292733053623684387083831021101592062412923563844514514957083110128147191239231839845905626106807861401621652042452863532495518572635695835140162587388108136162212266312350045050060058739010813616221226631235004504966005873516580102127152200250305337387438459151658010212715020025030533738743848759151658112026559514022336039551883681114203042841452203504706058201050811127.019.0168.5216.0267.0292.039.0432.04.0527.0603.06.0724.0838.0165.0190.5190.5235.0279.5317.5393.570.0533.5559.0616.0686.079.5901.5165.0190.53456810121416801001251502002503003504008310211015920624830535638417220725228035043351857663990108136162212266312350080102127150200230533738719265168130210384550635203.0241.5292.0317.5393.82.5571.5635.0705.088812121216161611/811/411/213/815/817/8221/421/2M30M33M39M36M42M48M52M56M2703103704305106006957758502753153740520610715800800H76系列对夹双瓣旋启式止回阀主要尺寸及重量口径压力级尺寸（mm）重量螺栓孔中配管法兰（供参考）螺栓直径din111/811/411/2131/42221/223/4mmM27M30M33M39M45M52M52MM70螺栓长度LRF255290320370420515600750855RJ260305330380435530620775885NPSDNLDD3D2（KG）心圆直径螺栓数量D1221/23Class2500PN42.0MPa456810125065801001251502002503007083861051101592062305143166194232277315387474858106162186232272425262881001501802252661018205990150240440171.5197.0228.5273.0324.0368.38.0539.5619.0888888121212H76系列对夹双瓣旋启式止回阀主要尺寸及重量公称压力PNMPa公称通经DNmmL50PN1.0MPa6580尺寸(mm)DD3567388D2516580234重量（KG）125145160配管法兰（供参考螺栓孔中心圆直径D1螺栓数量螺栓直径d螺栓长度L448M16M16M161501551606010867128731421001251502002503003504004505006007008009001000120050PN1.6MPa65807316210810286192132127982181601521272732102031463282662181378310305184438355350191440002035394550219594505500222696605600305811700695305918800796368101038432112410551050524134012051200601086712873142567388516580681324375076110135158320380560090014002341802102402953504004605155656207258409501050116013801251451608888121216162020202424282832448M16M16M20M20M20M20M20M24M24M24M27M27M30M30M33M36M16M16M161658020523525529029531032534530450520590695150155160H76系列对夹双瓣旋启式止回阀主要尺寸及重量公称压力PNMPa公称通经DNmmL100125150200250PN1.6MPa300350400450500600尺寸(mm)DD3D2681324375076110135158320重量（KG）1802102402953510470525585650770配管法兰（供参考螺栓孔中心圆直径D1螺栓数量螺栓直径d螺栓长度L8881212121616202020M16M16M20M20M24M24M24M27M27M30M3316518020523526530531033034537038073162108102861921321279821816015212727321020314632926621813843103051844443553501914900020355555021961850550022273260560070080090010001200506580100125150200250300PN2.5MPa3504004505006007008009001000120030580270069530591280079636810129038432112610551050524134012051200601086712873142567388516580380560090014002346814274286120148165340400580660960144080950105011701390125145160190220250310370430490550600660770875990109012101420242428283248888812121616162020202424282832M33M36M36M39M45M16M16M16M20M24M24M24M27M27M30M33M33M33M36M39M45M45M52M52470475562073515016017018020522025528532534036037539105005205906757907316810810286194132127982241601521272842102031463412662181401310305184458355350191510002035655021962250550022273260560030583170069530594280079636810409038432115510551050524136512051200H76系列对夹双瓣旋启式止回阀主要尺寸及重量公称压力PNMPa公称通经DNmmL100125PN1.6MPa150200250300尺寸(mm)DD3D26813243750重量（KG）1802102402953510配管法兰（供参考螺栓孔中心圆直径D1螺栓数量螺栓直径d螺栓长度L888121212M16M16M20M20M24M24165180205235265305731621081028619213212798218160152127273210203146329266218138431030535040045050060070080090010001200506580100125150200250300PN2.5MPa3504004505006007008009001000120018444435535019149000203555550761101351583203805600900140023468142742861201481653404005806609601440470525585650770809501050117013901251451601902202503103704304905506006607708759901090121014201616202020242428283248888812121616162020202424282832M24M27M27M30M33M33M36M36M39M45M16M16M16M20M24M24M24M27M27M30M33M33M33M36M39M45M45M52M5231033034537038047047556207351501601701802052202552853253403603753910500520590675790219618505500222732605600305802700695305912800796368101290384321126105510505241340120512006010867128731425673885165807316810810286194132127982241601521272842102031463412662181401310305184458355350191510002035655021962250550022273260560030583170069530594280079636810409038432115510551050524136512051200H76系列对夹双瓣旋启式止回阀主要尺寸及重量公称压力PNMPa公称通经DNmmLPN1.6MPa100尺寸(mm)DD3D26重量（KG）180配管法兰（供参考螺栓孔中心圆直径D1螺栓数量螺栓直径d螺栓长度L8M161657316210810212515020025030035040045050060070080090010001200506580100125150200250300PN2.5MPa350400450500600700800900100012008619213212798218160152127273210203146329266218138431030518444435535019149000203555550813243750761101351583203805600900140023468142742861201481653404005806609601440210240295351047052558565077080950105011701390125145160190220250310370430490550600660770875990109012101420881212121616202020242428283248888812121616162020202424282832M16M20M20M24M24M24M27M27M30M33M33M36M36M39M45M16M16M16M20M24M24M24M27M27M30M33M33M33M36M39M45M45M52M5218020523526530531033034537038047047556207351501601701802052202552853253403603753910500520590675790219618505500222732605600305802700695305912800796368101290384321126105510505241340120512006010867128731425673885165807316810810286194132127982241601521272842102031463412662181401310305184458355350191510002035655021962250550022273260560030583170069530594280079636810409038432115510551050524136512051200尺寸（mm）公称压力公称通径PNMPaDNmmLDD3D2重量（KG）螺栓孔中心圆直径D1506580100125150PN4.0MPa200250300350400450500600506580100125PN6.3MPa150200250300350400506580100PN10.0MPa1251502002503003506067737386981271461812222322292318606773791051361652132292733056067737910513616521322927310812814216819422429135341847575726267451141381481742112483103624224871120144118121825832439245651058738810813216021026631035055505608587388108132162212266310350558738810813216221226631035551658010212715220323053504004505006005165801021271522002503053504005165801021271522002503053503468131628497611419020026040445710162038621001602605710121925569414223012514516019022025032038505105856106707951351601702002402803400460525585145170180210250290360430500560配管法兰（供参考）螺栓直径dM16M16M16M20M24M24M27M30M30M33M36M36M39M45M20M20M20M24M27M30M33M33M33M36M39M24M24M24M27M30M30M33M36M39M45螺栓长度LRF、MFM15016017018020522027030034004270505575170180190210250290335392048052518519520522526530535265535RJ----------------------------18519520522526530535041043950200210220240280320370440480550螺栓数量488888121216161620202048888812121616188888121216100305570400036662016M45585600尺寸（mm）公称压力PNMPa公称通径DNmmLDD3D2重量（KG）螺栓孔中配管法兰（供参考）螺栓直径dM22M27M27M30M36M36M42M48M48M24M24M24M27M30M30M33M39M39M22M27M30M36M36M42M48M52M24M24螺栓长度LRF、MFM2052452502803353870535610210235245280305362955702152552703303530510595215235RJ2202602652953504090555022525026029532038455156002302702853453750530625230250心圆直径螺栓数量D150658010012515020025030050658010012515020025030050658010012515020025050657083831021101592062412927083831021101592062412927083831021101592062487083142162176208247280353552012014411812182583253459136174198228031639051812415673901081361622122663125673901081361622122663125673901081361622122665673516580102127150203250305516580102127152203230551658010212715220325165811161933408414623071014172836781302108162235507812022081416519020524028521840048557014517018021025029036043050016020323029231836044057215018088888121212188881212121688881212121688801001251502002503008310211015920624830517120324328535944309010813616221226631280102127152203230520284470110200350200235275320400490590881212121616M27M30M30M33M39M45M48250290310387056066526530532090580695注：1、不同的法兰标准其尺寸有一定的差异，故配管法兰的螺栓的直径D、螺栓长度L1等尺寸仅供参考。本表中配管法兰尺寸主要以JB/T74-90标准列2为依据。2、RF表示突面法兰；MFM表示凹凸面法兰；RJ表示环连接面法兰。微阻缓闭蝶式止回阀一、产品[微阻缓闭蝶式止回阀]的详细资料：产品名称：微阻缓闭蝶式止回阀产品特点：适用于公称压力1MPa，介质温度≤80％的清水、污水、海水等介质管道上，以及给、排水加压泵组上。通过本阀独特的微阻缓闭装置，能有效地防止水锤的发生，保证管路系统安全运行。二、特点：1、由于本止回阀设有微阻缓闭装置，能有效地防止水击现象的发生，保证管道正常运行。2、本止回阀设计结构独特新颖，体积小、重量轻。3、密封面为橡胶对金属的软密封，密封性能可靠。耐磨损，使用寿命长。三、主要零件材料：阀体球墨铸铁灰铸铁铸钢不锈钢不锈钢丁睛橡胶蝶板阀杆盛扭面四、微阻缓闭蝶式止回阀主要外形尺寸与法兰连接尺寸：法兰尺寸和螺栓规格公称通径(DN)L10012515020025030035040045050060070080090010001200190200210230250270290310330350390430470510550630H1110123140168195220250283308335390448505555610725H22102202502803103504104905205850700750810860980D1180210240295350400460515565620725840950105011601380产要尺寸1.0MPan-Φd8-188-188-2312-2312-2316-2316-2520-2520-2520-3024-3024-3428-3428-3428-3432-41订货须知：一、①微阻缓闭蝶式止回阀产品名称与型号②微阻缓闭蝶式止回阀口径③微阻缓闭蝶式止回阀是否带附件二、若已经由设计单位选定公司的微阻缓闭蝶式止回阀型号，请按微阻缓闭蝶式止回阀型号三、当使用的场合非常重要或环境比较复杂时,请您尽量提供设计图纸和详细参数，相关产品：静音式对夹止回阀WM410系列止回阀WM405系列三合一止回阀国标钢制止回阀内螺纹旋启式止回阀升降止回阀H41T型升降铸铁止回阀旋启式止回阀内螺纹止回阀升降式底阀H71对夹升降式止回阀对夹双瓣旋启式止回阀