H77H对夹蝶型止回阀结构特点：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。H77H对夹蝶型止回阀材质参数公称压力PN1.0MPa、PN1.6MPa、PN2.5MPa、PN4.0MPa、PN6.4MPa、PN10.0MPa型号H77H-CH77W-PH77W-P8H77W-P3H77W-RH77W-R8H77W-R3主要零件材料阀体WCB(A105)ZG1Cr18Ni9TiCF8(304)CF8(304L)ZG1Cr18Ni12Mo2TiCF8M(316)CF3M(316L)阀瓣CF8CF8CF8CF3CF8MCF8MCF3M阀轴2Cr131Cr18Ni9Ti0Cr18Ni900Cr19Ni101Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni14Mo2弹簧0Cr18Ni90Cr18Ni90Cr18Ni900Cr19Ni100Cr17Ni12Mo20Cr17Ni12Mo200Cr17Ni14Mo2适用工况适用介质水、蒸汽、油品等硝酸等腐蚀性介质强氧化性介质醋酸等腐蚀性介质尿素等腐蚀性介质适用温度(℃)-29～425-196～540-196～425-196～540-196～455H77H对夹蝶型止回阀连接尺寸压力等级口径尺寸（mm）重量（kg）配管法兰（供参考）NPSDNLDD3D2螺栓孔中心圆直径D1螺栓数量螺栓直径d螺栓长度L1inmmRFRJClass150PN2.0MPa2506010356512120.545/8M1614015521/2656712273653139.545/8M161501653807313588804152.545/8M161601754100731731081026190.585/8M161701855125861951321278216.083/4M2019020561509822016015213241.583/4M20205220820012727721020325298.583/4M202402551025014633726625439362.0127/8M242702851230018140731030554432.0127/8M243103251435018444835535080476.0121M2732534016400191512405400117540.0161M2734035518450203547455450138578.01611/8M3036538020500219604505500163635.02011/8M3038540024600222715605600331749.52011/4M3340542028700305773700700380795.5403/4M20455-30750305824750746425846.0443/4M20455-32800305878800796560900.0483/4M20460-369003689839108986401009.5447/8M24540-4210504321142105510509601171.5481M27625-48120052413021205120014001335.04411/8M30740-Class300PN5.0MPa2506011058513127.085/8M1615517521/2656712873654149.083/4M201751953807314788806168.583/4M201902104100731791081028200.083/4M2019521551258621413212715235.083/4M2021523561509824916015218270.0123/4M20230250820012730521020331330.0127/8M242803001025014635926625451387.5161M273153351230018142031030577451.01611/8M3036538514350222483355350117514.52011/8M3041043016400232537405400190571.52011/4M3343545518450264594455450200628.52411/4M3347553520500292652505500265686.02411/4M3351058524600318772608600410813.02411/2M39560-30750368882740735660921.03613/8M36650-36900483104488087310201089.03215/8M42800-42110056811961045103515401244.53613/4M45920-48120062913651190117922601416.04017/8M481010【红德阀门】订货须知：1、期货、订货的客户请先来电函详细告诉所需的阀门型号、规格、数量以及交货时间、地点。2、客户需对产品有特殊要求的，须在订货合同中提供：公称直径、连接形式、结构长度、介质温度、压力范围、试验、检验标准及其他要求说明。3、本厂可根据客户特定要求配置各类驱动装置。4、若客户提供的阀门型号与本厂型号不一致时，客户应正确说明其型号的含义和要求，在供需双方理解一致的条件下签订合同，本厂即备料生产。感谢您登录并关注【红德阀门】网站，如果您对我们的产品、服务有任何建议或者疑问，联系我们，我们一定会尽心尽力为您提供优质的服务。最后红德阀门祝各位老板生意兴隆、万事大发！！！)