对夹式止回阀H71基本信息栏品名型号规格压力材质对夹式止回H71H DN50-600mm PN1.6-6.4mpa 碳钢；不锈钢阀H71H型升降对夹式止回阀由阀体、阀瓣、弹簧等组成，水平或垂直安装于管路系统，防止介质倒流，具有结构短、体积小、质量轻；阀瓣关闭快速，水锤压力小；流道通畅，流体阻力小；动作灵敏，密封性能好。

H71对夹止回阀结构图技术参数型公称壳体密封工作温度适用温度配管法兰公称压力常规产品型号JB/T 74 ~90、GB/T 9112 ~9124、HG 20592 ~20614 PN1.0MPa H71H-10CH71W-10PH71W-10P8 H71W-10P3 H71W-10R H71W-10R8 H71W-10R3 PN1.6MPa H71W-16CH71W-16PH71W-16P8 H71W-16P3 H71W-16R H71W-16R8 H71W-16R3 PN2.5MPa H71W-25H71W-25PH71W-25P8 H71W-25P3 H71W-25R H71W-25R8 H71W-25R3 PN4.0MPa H71W-40H71W-40PH71W-40P8 H71W-40P3 H71W-40R H71W-40R8 H71W-40R3 PN6.3MPa H71W-63H71W-63PH71W-63P8 H71W-63P3 H71W-63R H71W-63R8 H71W-63R3 PN10.0MPa H71W-100H71W-100PH71W-100P8 H71W-100P3 H71W-100R H71W-100R8 H71W-100R3 PN16.0MPa H71W-160H71W-160PH71W-160P8 H71W-160P3 H71W-160R H71W-160R8 H71W-160R3GB/T 9112 ~9124、HG 20615 ~20635、SH 3406 PN2.0MPa H71H-20C —H71W-20P8 H71W-20P3 —H71W-20R8 H71W-20R3 PN5.0MPa H71H-50 —H71W-50P8 H71W-50P3 —H71W-50R8 H71W-50R3 PN11.0MPa H71H-110 —H71W-110P8 H71W-110P3 —H71W-110R8 H71W-110R3PN15.0MPa H71H-150 —H71W-150P8 H71W-150P3 —H71W-150R8 H71W-150R3ANSI B 16.5 Class150 H71H-A1C —H71W-A1P8 H71W-A1P3 —H71W-A1R8 H71W-A1R3 Class300 H71H-A3 —H71W-A3P8 H71W-A3P3 —H71W-A3R8 H71W-A3R3 Class600 H71H-A6 —H71W-A6P8 H71W-A6P3 —H71W-A6R8 H71W-A6R3 Class900 H71H-A9 —H71W-A9P8 H71W-A9P3 —H71W-A9R8 H71W-A9R3主要零件材料阀体WCB(A105)ZG1Cr18Ni9TiCF8(304) CF3(304L)ZG1Cr18Ni12Mo2TiCF8M(316) CF3M(316L) 阀瓣2Cr13 1Cr18Ni90Cr18Ni9 00Cr19Ni10 1Cr18Ni12M0Cr17Ni12Mo2 00Cr17Ni14MTi o2Ti o2压圈2Cr131Cr18Ni9Ti 0Cr18Ni9 00Cr19Ni101Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni14Mo2弹簧0Cr18Ni9 0Cr18Ni9 0Cr18Ni9 00Cr19Ni100Cr17Ni12Mo2 0Cr17Ni12Mo200Cr17Ni14Mo2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 -196~455 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法。

.famenwz./?p=133公称压力PN MPa 公称通径DNmm尺寸(mm)重量(kg)配管法兰(供参考)L D D3 D2 D4螺栓孔中心圆直径D1螺栓数量螺栓直径d螺栓长度L1PN1.0 MPa PN1.6 MPa (长系列) 15 25 52 15 44 25 0.12 65 4 M12 75 2031.562 19 52 30 0.24 75 4 M12 90 2535.572 24 60 36 0.34 85 4 M12 90 32 38 83 31 72 43 0.53 100 4 M16 100 40 40 93 39 74 52 0.80 110 4 M16 105 50 4410748 98 62 1.2 125 4 M16 125 65 6212463 117 75 2.2 145 4 M16 130 80 6513878 128 90 3.1 160 8 M16 135 100 6816498 / 112 5.7 180 8 M16 150 125 86188123/ 132 10 210 8 M16 180 15010219148/ 158 14 240 8 M20 210 2001127198/ 208 24 295 8 M20 240 25016332248/ 208 35 350 8 M20 260PN2.5 MPa (长系列) 15 25 52 15 44 25 0.12 65 4 M12 80 2031.562 19 52 30 0.24 75 4 M12 90 25 35.72 24 60 36 0.34 85 4 M12 90532 40 83 31 72 43 0.53 100 4 M16 110 40 45 93 39 74 52 0.80 110 4 M16 115 50 5610948 98 62 1.2 125 4 M16 125 65 6312963 117 75 2.2 145 8 M16 135 80 7114478 128 90 3.1 160 8 M16 145 100 8016898 / 112 7.0 190 8 M20 160125110 196123/ 132 12 220 8 M24 205150125 224148/ 158 15 250 8 M24 225200160 284198/ 208 26 310 12 M24 260PN4.0 MPa (长系列) 15 / 52 15 44 25 0.12 65 4 M12 80 20 / 62 19 52 30 0.24 75 4 M12 90 25 / 72 24 60 36 0.34 85 4 M12 90 32 / 83 31 72 43 0.53 100 4 M16 110 40 / 93 39 74 52 0.80 110 4 M16 115 50 /10948 98 62 1.2 125 4 M16 125 65 /12962 117 75 2.2 145 8 M16 135 80 /14476 128 90 3.1 160 8 M16 145 100 /16895 / 112 9 190 8 M20 160 125 /19611/ 132 14 220 8 M24 205 150 /224127/ 158 18 250 8 M24 225 200 /291165/ 208 28 320 12 M27 275.famenwz./?p=133H71美标系列对夹升降式止回阀主要尺寸及重量压力级口径尺寸(mm)重量(kg)配管法兰(供参考)NPS DN L D D2 D3 D4螺栓孔中心螺栓螺栓直径d螺栓圆直径D1 数量长度L1in mmClass 150PN 2.0MPa 1/2 15 16 46 15 25 25 0.28 60.5 4 1/2 M1475 3/4 20 19 56 19 30 30 0.42 70 4 1/2 M1490 1 25 22 65 24 36 36 0.56 79.5 4 1/2 M1490 11/4 32 28 74 31 43 43 0.75 89 4 1/2 M1410 11/2 40 31.5 84 39 52 52 1.3 98.5 4 1/2 M1415 2 50 40 103 48 62 62 2.1 120.5 4 5/8 M16125 21/2 65 46 122 62 75 75 2.8 139.5 4 5/8 M16130 3 80 50 135 76 90 90 3.6 152.5 4 5/8 M16135 4 100 60 173 95 112 112 4.8 190.5 8 5/8 M16150 5 125 90 195 110 125 132 12 216.0 8 3/4 M20180 6 150 106 220 127 150 158 17 241.5 8 3/4 M20210 8 200 140 277 165 200 208 29 298.5 8 3/4 M2024H71美标系列对夹升降式止回阀主要尺寸及重量压力级口径尺寸(mm)重量(kg)配管法兰(供参考)NPS DN L D D2 D3 D4 螺栓孔中心圆直径D1螺栓数量螺栓直径d螺栓长度L1in mm RF RJCLass 150PN 2.0MPa (长系列) 1/2 15 25 46 15 25 25 0.28 60.5 41/2M14 90 —3/4 20 31.5 56 19 30 30 0.42 70 41/2M14 100 —1 25 35.5 65 24 36 36 0.56 79.5 41/2M14 105 120 11/4 32 40 74 31 43 43 0.75 89 41/2M14 115 130 11/2 40 45 84 39 52 52 1.3 98.5 41/2M14 120 135 2 50 56 103 48 62 62 2.1 120.5 45/8M16 140 155 21/2 65 63 122 62 75 75 2.8 139.5 45/8M16 155 170 3 80 71 135 76 90 90 3.6 152.5 45/8M16 165 180 4 100 80 173 95 112 112 4.8 190.5 85/8M16 175 190 5 125 110 195 110 125 132 12 216.0 83/4M20 210 225 6 150 125 220 127 150 158 17 241.5 83/4M20 230 245 8 200 160 277 165 200 208 29 298.5 83/4M20 270 285CLass 300PN 5.0MPa 1/2 15 25 52 15 25 25 0.3 66.5 41/2M14 95 105 3/4 20 31.5 65 19 30 30 0.46 82.5 45/8M16 110 125 1 25 35.5 72 24 36 36 0.6 89 45/8M16 115 130 11/4 32 40 81 31 43 43 0.8 98.5 45/8M16 125 140 11/2 40 45 94 39 52 52 1.5 114.5 43/4M20 140 155 2 50 56 110 48 62 62 2.4 127.0 85/8M16 145 170止回阀常见型号：对夹升降式止回阀：H71X、H71H；对夹蝶形双瓣止回阀：H76X、H76H；对夹圆片式止回阀：H74H、H74I、H74M；静音止回阀：H42H、H42W；微阻缓闭式止回阀：HH44H、HH46H、HH49H;橡胶阀瓣式止回阀：HC44X；消声止回阀：HC41H、HC41X、HC41T；升降式止回阀：H41H、H41W;旋启式止回阀：H44H、H44W；滑道滚球式止回阀:HQ41X；焊接止回阀：H61Y、H62Y、H64Y。