H71对夹升降式止回阀H71对夹升降式止回阀的流体阻力系数、流量用开启压力公称通径阀门全开启时的流体阻力系数ζ常温下阀门全开启时的水流量系数流体的流向DNNPSKv(m3/h)CV(U.S)CV(U.K)↑↓→开启压力近似的值KPa151/26.42.63.02.5322.5203/45.16.47.56.3322.52514.112.614.812.3322.53211/44.119.723.119.3322.54011/23.829.534.528.9322.55023.554.663.953.5322.56521/23.585.499.983.7322.58033.2128150125322.510042.8244286249322.512552.9375439368312.215063.1522611512312.220083.29151070897312.2H71系列对夹升降式止回阀的型号、材料及主要参数配管法兰公称压力常规产品型号JB/T74～90、GB/T9112～9124、HG20592～20614PN1.0MPaH71H-10CH71W-10PH71W-10P8H71W-10P3H71W-10RH71W-10R8H71W-10R3PN1.6MPaH71H-16CH71W-16PH71W-16P8H71W-16P3H71W-16RH71W-16R8H71W-16R3PN2.5MPaH71H-25H71W-25PH71W-25P8H71W-25P3H71W-25RH71W-25R8H71W-25R3PN4.0MPaH71H-40CH71W-40PH71W-40P8H71W-40P3H71W-40RH71W-40R8H71W-40R3PN6.3MPaH71H-63H71W-63PH71W-63P8H71W-63P3H71W-63RH71W-63R8H71W-63R3PN10.0MPaH71H-100H71W-100PH71W-100P8H71W-100P3H71W-100RH71W-100R8H71W-100R3PN16.0MPaH71H-160H71W-160PH71W-160P8H71W-160P3H71W-160RH71W-160R8H71W-160R3GB/T9112～9124、HG20615～20635、SH3406PN2.0MPaH71H-20C—H71W-20P8H71W-20P3—H71W-20R8H71W-20R3PN5.0MPaH71H-50—H71W-50P8H71W-50P3—H71W-50R8H71W-50R3PN11.0MPaH71H-110—H71W-110P8H71W-110P3—H71W-110R8H71W-110R3PN15.0MPaH71H-150—H71W-150P8H71W-150P3—H71W-150R8H71W-150R3ANSIB16.5Class150H71H-A1C—H71W-A1P8H71W-A1P3—H71W-A1R8H71W-A1R3Class300H71H-A3—H71W-A3P8H71W-A3P3—H71W-A3R8H71W-A3R3Class600H71H-A6—H71W-A6P8H71W-A6P3—H71W-A6R8H71W-A6R3Class900H71H-A9—H71W-A9P8H71W-A9P3—H71W-A9R8H71W-A9R3主要零件材料阀体WCB(A105)ZG1Cr18Ni9TiCF8(304)CF8(304L)ZG1Cr18Ni12Mo2TiCF8M(316)CF3M(316L)阀瓣2Cr131Cr18Ni9Ti0Cr18Ni900Cr19Ni101Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni12Mo2压圈2Cr131Cr18Ni9Ti0Cr18Ni900Cr19Ni101Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni12Mo2弹簧0Cr18Ni90Cr18Ni90Cr18Ni900Cr19Ni1001Cr17Ni12Mo20Cr17Ni12Mo200Cr17Ni12Mo2适用工况适用介质水、蒸气、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(℃)-29～425-196～540-196～425-196～540-196～455注:本表为常规对夹式止回阀的型号编制、主要零件材料及适用工况,其他要求及其型号编制参见对夹止回阀型号编制方