不锈钢对夹止回阀的详细介绍不锈钢对夹止回阀采用新型全部材料采用耐腐蚀不锈钢。可在任何位置的管路上安装，防止介质逆流，锅炉给水系统上回，其连接方式是利用原有管道两端法兰对夹即可投入运行。其各项指标都优于目前市售的任何一种上回阀。它的运用范围广泛，凡水、气、油、酸、碱液、氢、氨、特别消防管道等介质均可使用。不锈钢对夹止回阀的型号、材料及主要参数配管法兰公称压力常规产品型号JB/T74～90GB/T9112～9124HG 20592～20614PN1.0MPaH71H-10CH71W-10PH71W-10P8H71W-10P3H71W-10RH71W-10R8H71W-10R3PN1.6MPaH71H-16CH71W-16PH71W-16P8H71W-16P3H71W-16RH71W-16R8H71W-16R3PN2.5MPaH71H-25H71W-25PH71W-25P8H71W-25P3H71W-25RH71W-25R8H71W-25R3PN4.0MPaH71H-40H71W-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/T9112～9124HG20615～20635SH3406PN2.0MPaH71H-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-150R3ANSI B16.5Class150H71H-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)CF3(304L)ZG1Cr18Ni12Mo2TiCF8M(316)CF3M(316L)阀瓣2Cr131Cr18Ni9Ti0Cr18Ni900Cr18Ni101Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni14Mo2压圈2Cr131Cr18Ni9Ti0Cr18Ni900Cr18Ni101Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni14Mo2弹簧0Cr18Ni90Cr18Ni90Cr18Ni900Cr18Ni100Cr17Ni12Mo20Cr17Ni12Mo200Cr17Ni14Mo2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硝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式止回阀型号编制方法。