| 【产品名称:对夹蝶式止回阀】【产品型号:H76H、H76X】
 H76H对夹蝶式止回阀适用于公称压力PN1.6Mpa~42.0Mpa、Class150~2500LB;公称通径DN15~1200mm、PNS1/2~48";工作温度:-196~540℃的各种管路上,用于防止介质倒流。阀体材料有:碳钢、不锈钢等,可使用于水、蒸汽、燃气、油品、酸类介质等。
 【产品介绍】:
 H76H对夹蝶式止回阀阀座密封面可为本体堆焊耐磨材料或衬橡胶,使用范围广,密封可靠。用于工业、环保、水处理、高层建筑给排水管路,阻止介质逆向流动之用。
 【工作原理】:
 H76H对夹蝶式止回阀蝶板为两个半圆,且采用弹簧强制复位,由于扭弹簧的作用力通常阀门是关闭的,当流体正向流动时,流体的压力使得碟片绕铰链转动,阀门打开。一旦流体流动停止,由于弹簧的作用,在倒流前阀门就已关闭。
 【产品特点】:
 1、阀体结构长度尺寸小、刚性好。
 2、使用性能安全可靠,抗干扰性好。
 3、体积小、重量轻、结构紧凑、便于维护。
 4、因速闭作用,可防止介质倒流,消除水锤作用强。
 5、安装方便,可在水平、垂直两个方向的管路上安装。
 6、阀板采用对蝶板上加两个扭力弹簧,可使阀板自行速闭。
 【产品其他参数】:
 
 H76对夹双瓣旋启式止回阀(美标)H76 double discs wafer type swing check valve (ANSI standard)
 主要尺寸及重量 Main dimensions and weigth
 | 压力级 Pressure
 rating
 | 口径 DN
 | 尺寸(mm) Dimension
 | 重量 (kg)
 Weight
 | 配管法兰(供参考) Flange(as referenced)
 |  | NPS | DN | L | D | D3 | D2 | 螺栓孔中 心圆直径D1
 The diameter
 of the bore
 central circle
 of bolt
 | 螺栓 数量
 Quantity
 of the
 bolt
 | 累栓直径 Diameter of the bolt
 | 螺栓长度L1 Length of the bolt
 |  | in | mm | RF | RJ |  | Class 150 PN2.0MPa
 | 2 | 50 | 60 | 103 | 56 | 51 | 2 | 120.5 | 4 | 5/8 | M16 | 140 | 155 |  | 2 1/2 | 65 | 67 | 122 | 73 | 65 | 3 | 139.5 | 4 | 5/8 | M16 | 150 | 165 |  | 3 | 80 | 73 | 135 | 88 | 80 | 4 | 152.5 | 4 | 5/8 | M16 | 160 | 175 |  | 4 | 100 | 73 | 173 | 108 | 102 | 6 | 190.5 | 8 | 5/8 | M16 | 170 | 185 |  | 5 | 125 | 86 | 195 | 132 | 127 | 8 | 216.5 | 8 | 3/4 | M20 | 190 | 205 |  | 6 | 150 | 98 | 220 | 160 | 152 | 13 | 241.5 | 8 | 3/4 | M20 | 205 | 220 |  | 8 | 200 | 127 | 277 | 210 | 203 | 25 | 298.5 | 8 | 3/4 | M20 | 240 | 255 |  | 10 | 250 | 146 | 337 | 366 | 254 | 39 | 362.0 | 12 | 7/8 | M24 | 270 | 285 |  | 12 | 300 | 181 | 407 | 310 | 305 | 54 | 432.0 | 12 | 7/8 | M24 | 310 | 325 |  | 14 | 350 | 184 | 448 | 355 | 350 | 80 | 476.0 | 12 | 1 | M27 | 325 | 340 |  | 16 | 400 | 191 | 512 | 405 | 400 | 117 | 540.0 | 16 | 1 | M27 | 340 | 355 |  | 18 | 450 | 203 | 547 | 455 | 450 | 138 | 578.0 | 16 | 1 1/8 | M30 | 365 | 380 |  | 20 | 500 | 219 | 604 | 505 | 500 | 163 | 635.0 | 20 | 1 1/8 | M30 | 385 | 400 |  | 24 | 600 | 222 | 715 | 605 | 600 | 331 | 749.5 | 20 | 1 1/4 | M33 | 405 | 420 |  | 28 | 700 | 305 | 773 | 700 | 700 | 380 | 795.5 | 40 | 3/4 | M20 | 455 | - |  | 30 | 750 | 305 | 824 | 750 | 746 | 425 | 846.0 | 44 | 3/4 | M20 | 455 | - |  | 32 | 800 | 305 | 878 | 800 | 796 | 560 | 900.0 | 48 | 3/4 | M20 | 460 | - |  | 36 | 900 | 368 | 983 | 910 | 898 | 640 | 1009.5 | 44 | 7/8 | M24 | 540 | - |  | 40 | 1000 | 432 | 1142 | 1055 | 1055 | 960 | 1171.5 | 48 | 1 | M27 | 625 | - |  | 48 | 1200 | 524 | 1302 | 1205 | 1200 | 1400 | 1335.0 | 44 | 1 1/8 | M30 | 740 | - |  | Class 300 PN5.0MPa
 | 2 | 50 | 60 | 110 | 58 | 51 | 3 | 127.0 | 8 | 5/8 | M16 | 155 | 175 |  | 2 1/2 | 65 | 67 | 128 | 73 | 65 | 4 | 149.0 | 8 | 3/4 | M20 | 175 | 195 |  | 3 | 80 | 73 | 147 | 88 | 80 | 6 | 168.5 | 8 | 3/4 | M20 | 190 | 210 |  | 4 | 100 | 73 | 179 | 108 | 102 | 8 | 200.0 | 8 | 3/4 | M20 | 195 | 215 |  | 5 | 125 | 86 | 214 | 132 | 127 | 15 | 235.0 | 8 | 3/4 | M20 | 215 | 235 |  | 6 | 150 | 98 | 249 | 160 | 152 | 18 | 270.0 | 12 | 3/4 | M20 | 230 | 250 |  | 8 | 200 | 127 | 305 | 210 | 203 | 31 | 330.0 | 12 | 7/8 | M24 | 280 | 300 |  | 10 | 250 | 146 | 359 | 266 | 254 | 51 | 387.5 | 16 | 1 | M27 | 315 | 335 |  | 12 | 300 | 181 | 420 | 310 | 305 | 77 | 451.0 | 16 | 1 1/8 | M30 | 365 | 385 |  | 14 | 350 | 222 | 483 | 355 | 350 | 117 | 414.5 | 20 | 1 1/8 | M30 | 410 | 430 |  | 16 | 400 | 232 | 537 | 405 | 400 | 190 | 571.5 | 20 | 1 1/4 | M33 | 435 | 455 |  | 18 | 450 | 264 | 594 | 455 | 450 | 200 | 628.5 | 24 | 1 1/4 | M33 | 475 | 495 |  | 20 | 500 | 292 | 652 | 505 | 200 | 265 | 686.0 | 24 | 1 1/4 | M33 | 510 | 535 |  | 24 | 600 | 318 | 772 | 608 | 600 | 410 | 813.0 | 24 | 1 1/2 | M33 | 560 | 560 | 
 | 压力级 Pressure
 rating
 | 口径 DN
 | 尺寸(mm) Dimension
 | 重量 (kg)
 Weight
 | 配管法兰(供参考) Flange(as referenced)
 |  | NPS | DN | L | D | D3 | D2 | 螺栓孔中 心圆直径D1
 The diameter
 of the bore
 central circle
 of bolt
 | 螺栓 数量
 Quantity
 of the
 bolt
 | 累栓直径 Diameter of the bolt
 | 螺栓长度L1 Length of the bolt
 |  | in | mm | RF | RJ |  | Class 300 PN5.0MPa
 | 30 | 750 | 368 | 882 | 740 | 735 | 660 | 921.0 | 36 | 1 3/8 | M36 | 650 | - |  | 36 | 900 | 483 | 1044 | 880 | 873 | 1020 | 1089.0 | 32 | 1 5/8 | M42 | 800 | - |  | 42 | 1050 | 568 | 1196 | 1045 | 1035 | 1540 | 1244.5 | 36 | 1 3/4 | M45 | 920 | - |  | 48 | 1200 | 629 | 1385 | 1190 | 1179 | 2260 | 1416.0 | 40 | 1 7/8 | M48 | 1010 | - |  | Class 600 PN11.0MPa
 | 2 | 50 | 60 | 110 | 58 | 51 | 4 | 127.0 | 8 | 5/8 | M16 | 175 | 180 |  | 2 1/2 | 65 | 67 | 128 | 73 | 65 | 5 | 149.0 | 8 | 3/4 | M20 | 195 | 200 |  | 3 | 80 | 73 | 147 | 88 | 80 | 8 | 168.5 | 8 | 3/4 | M20 | 210 | 215 |  | 4 | 100 | 79 | 191 | 108 | 102 | 11 | 216.0 | 8 | 7/8 | M24 | 235 | 240 |  | 5 | 125 | 105 | 239 | 136 | 127 | 20 | 267.0 | 8 | 1 | M27 | 280 | 285 |  | 6 | 150 | 136 | 264 | 162 | 152 | 26 | 292.0 | 12 | 1 | M27 | 320 | 325 |  | 8 | 200 | 165 | 318 | 212 | 200 | 55 | 349.0 | 12 | 1 1/8 | M30 | 370 | 375 |  | 10 | 250 | 213 | 398 | 266 | 250 | 103 | 432.0 | 16 | 1 1/4 | M33 | 440 | 445 |  | 12 | 300 | 229 | 455 | 312 | 305 | 140 | 489.0 | 20 | 1 1/4 | M33 | 460 | 465 |  | 14 | 350 | 273 | 490 | 355 | 337 | 223 | 527.0 | 20 | 1 3/8 | M36 | 520 | 525 |  | 16 | 400 | 35 | 562 | 400, | 387 | 360 | 
 | 20 | 1 1/2 | M39 | 575 | 580 |  | 18 | 450 | 362 | 610 | 450 | 438 | 395 | 654.0 | 20 | 1 5/8 | M42 | 650 | 655 |  | 20 | 500 | 368 | 680 | 500 | 489 | 518 | 724.0 | 24 | 1 5/8 | M42 | 670 | 680 |  | 24 | 600 | 438 | 786 | 600 | 591 | 836 | 838.0 | 24 | 1 7/8 | M48 | 780 | 790 |  | Class 900 PN5.0MPa
 | 2 | 50 | 70 | 140 | 58 | 51 | 8 | 165.0 | 8 | 7/8 | M24 | 225 | 230 |  | 2 1/2 | 65 | 83 | 162 | 73 | 65 | 11 | 190.5 | 8 | 1 | M27 | 250 | 255 |  | 3 | 80 | 83 | 165 | 90 | 80 | 14 | 190.5 | 8 | 7/8 | M24 | 240 | 245 |  | 4 | 100 | 102 | 204 | 108 | 102 | 20 | 235.0 | 8 | 1 1/8 | M30 | 285 | 290 |  | 5 | 125 | 110 | 245 | 136 | 127 | 30 | 279.5 | 8 | 1 1/4 | M33 | 310 | 315 |  | 6 | 150 | 159 | 286 | 162 | 150 | 42 | 317.5 | 12 | 1 1/8 | M30 | 365 | 370 |  | 8 | 200 | 206 | 356 | 212 | 200 | 8 | 393.5 | 12 | 1 3/8 | M36 | 440 | 445 |  | 10 | 250 | 241 | 432 | 266 | 250 | 145 | 470.0 | 16 | 1 3/8 | M36 | 490 | 495 |  | 12 | 300 | 292 | 495 | 312 | 305 | 220 | 533.5 | 20 | 1 3/8 | M36 | 560 | 565 |  | 14 | 350 | 356 | 518 | 355 | 337 | 350 | 559.0 | 20 | 1 1/2 | M39 | 645 | 655 |  | 16 | 400 | 384 | 572 | 400 | 387 | 470 | 616.0 | 20 | 1 5/8 | M42 | 685 | 695 |  | 18 | 450 | 451 | 635 | 450 | 438 | 605 | 686.0 | 20 | 1 7/8 | M48 | 790 | 805 |  | 20 | 500 | 451 | 695 | 496 | 487 | 820 | 749.5 | 20 | 2 | M52 | 810 | 825 |  | 24 | 600 | 495 | 835 | 600 | 591 | 1050 | 901.5 | 20 | 2 1/2 | M64 | 945 | 965 |  | Class 1500 PN26.0MPa
 | 2 | 50 | 70 | 140 | 58 | 51 | 8 | 165.0 | 8 | 7/8 | M24 | 225 | 230 |  | 2 1/2 | 65 | 83 | 162 | 73 | 65 | 11 | 190.5 | 8 | 1 | M27 | 250 | 255 |  | 3 | 80 | 83 | 172 | 90 | 80 | 19 | 203.0 | 8 | 1 1/8 | M30 | 270 | 275 |  | 4 | 100 | 102 | 207 | 108 | 102 | 26 | 241.5 | 8 | 1 1/4 | M33 | 310 | 315 |  | 5 | 125 | 110 | 252 | 136 | 127 | 51 | 292.0 | 8 | 1 1/2 | M39 | 370 | 375 |  | 6 | 150 | 150 | 280 | 162 | 150 | 68 | 317.5 | 12 | 1 3/8 | M36 | 430 | 440 |  | 8 | 200 | 206 | 350 | 212 | 200 | 130 | 393.5 | 12 | 1 5/8 | M42 | 510 | 520 |  | 10 | 250 | 248 | 433 | 266 | 254 | 210 | 482.5 | 12 | 1 7/8 | M48 | 600 | 610 |  | 12 | 300 | 305 | 518 | 312 | 305 | 384 | 571.5 | 16 | 2 | M52 | 695 | 715 |  | 14 | 350 | 356 | 576 | 355 | 337 | 550 | 635.0 | 16 | 2 1/4 | M56 | 775 | 800 |  | 16 | 400 | 384 | 639 | 400 | 387 | 635 | 705.0 | 16 | 2 1/2 | M64 | 850 | 880 | 
 | 压力级 Pressure
 rating
 | 口径 DN
 | 尺寸(mm) Dimension
 | 重量 (kg)
 Weight
 | 配管法兰(供参考) Flange(as referenced)
 |  | NPS | DN | L | D | D3 | D2 | 螺栓孔中 心圆直径D1
 The diameter
 of the bore
 central circle
 of bolt
 | 螺栓 数量
 Quantity
 of the
 bolt
 | 累栓直径 Diameter of the bolt
 | 螺栓长度L1 Length of the bolt
 |  | in | mm | RF | RJ |  | Class 2500 PN42.0MPa
 | 2 | 50 | 70 | 143 | 48 | 42 | 10 | 171.5 | 8 | 1 | M27 | 255 | 260 |  | 2 1/2 | 65 | 83 | 166 | 58 | 58 | 18 | 197.0 | 8 | 1 1/8 | M30 | 290 | 305 |  | 3 | 80 | 86 | 194 | 68 | 68 | 26 | 228.5 | 8 | 1 1/4 | M33 | 320 | 330 |  | 4 | 100 | 105 | 232 | 94 | 94 | 40 | 273.0 | 8 | 1 1/2 | M39 | 37 | 380 |  | 5 | 125 | 110 | 277 | 106 | 106 | 59 | 324.0 | 8 | 1 3/4 | M45 | 420 | 435 |  | 6 | 150 | 159 | 315 | 162 | 162 | 90 | 368.5 | 8 | 2 | M52 | 515 | 530 |  | 8 | 200 | 206 | 385 | 186 | 186 | 150 | 438.0 | 12 | 2 | M52 | 600 | 620 |  | 10 | 250 | 254 | 474 | 232 | 232 | 240 | 539.5 | 12 | 2 1/2 | M64 | 750 | 775 |  | 12 | 300 | 305 | 547 | 272 | 272 | 440 | 619.0 | 12 | 2 3/4 | M70 | 855 | 885 | 
 H76对夹双瓣旋启式止回阀(国标)H76 double discs wafer type swing check valve(GB standard)
 | 公称通径 DN
 mm
 Norminal
 diameter
 | 公称压力 PN
 MPa
 Norminal
 pressure
 | 尺寸(mm) Dimension
 | 重量 (kg)
 Weight
 | 配管法兰(供参考) Flange(as referenced)
 |  | L | D | D3 | D2 | 螺栓孔中心圆直径D1 The diameter
 of the bore
 central circle of bolt
 | 螺栓数量 Quantity
 of the bolt
 | 螺栓直径d Diameter
 of the bolt
 | 螺栓长度L1 Length of the bolt
 |  | PN1.6MPa | 50 | 60 | 108 | 56 | 51 | 2 | 125 | 4 | M16 | 150 |  | 65 | 67 | 128 | 73 | 65 | 3 | 145 | 4 | M16 | 155 |  | 80 | 73 | 142 | 88 | 80 | 4 | 160 | 8 | M16 | 160 |  | 100 | 73 | 162 | 108 | 102 | 6 | 180 | 8 | M16 | 165 |  | 125 | 86 | 192 | 132 | 127 | 8 | 210 | 8 | M16 | 180 |  | 150 | 98 | 218 | 160 | 152 | 13 | 240 | 8 | M20 | 205 |  | 200 | 127 | 273 | 210 | 203 | 25 | 295 | 12 | M20 | 235 |  | 250 | 146 | 328 | 266 | 254 | 39 | 355 | 12 | M24 | 365 |  | 300 | 181 | 384 | 310 | 305 | 64 | 410 | 12 | M24 | 305 |  | 350 | 184 | 444 | 355 | 350 | 85 | 470 | 16 | M24 | 310 |  | 400 | 191 | 496 | 405 | 400 | 114 | 525 | 16 | M27 | 330 |  | 450 | 203 | 556 | 455 | 450 | 138 | 585 | 20 | M27 | 345 |  | 500 | 219 | 618 | 505 | 500 | 161 | 650 | 20 | M30 | 370 |  | 600 | 222 | 732 | 605 | 600 | 250 | 770 | 20 | M33 | 380 |  | 700 | 305 | 802 | 700 | 695 | 370 | 840 | 24 | M33 | 470 |  | 800 | 305 | 912 | 800 | 796 | 540 | 950 | 24 | M36 | 475 |  | 900 | 368 | 1012 | 903 | 898 | 650 | 1050 | 28 | M36 | 545 |  | 1000 | 432 | 1126 | 1055 | 1050 | 900 | 1170 | 28 | M39 | 620 |  | 1200 | 524 | 1340 | 1205 | 1200 | 1420 | 1390 | 32 | M45 | 735 | 
 
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