對(duì)夾雙瓣式蝶形止回閥適用于公稱壓力PN1.0MPa~42.0MPa、公稱通徑DN15mm~1200mm、NPS1/2”~48”;工作溫 度-196C~540C的各種管道上,用于防止介質(zhì)倒流。上海尼必可閥門有限公司生產(chǎn)的ENH76系列對(duì)夾雙瓣蝶形止回閥通過(guò)選用不同的材質(zhì),可適用于水、蒸汽、油品、硝酸、強(qiáng)氧化性介質(zhì)及尿素等多種介質(zhì)。
對(duì)夾雙瓣式蝶形止回閥用途及結(jié)構(gòu)特點(diǎn):
為了防止介質(zhì)逆流,在設(shè)備、裝置和管道上都應(yīng)安裝止回閥。對(duì)夾雙瓣蝶形止回閥的主要特點(diǎn)是:1、對(duì)夾雙瓣蝶形止回閥結(jié)構(gòu)長(zhǎng)度短,其結(jié)構(gòu)長(zhǎng)度只有傳統(tǒng)法蘭止回閥的1/4~1/8;2、體積小,重量輕,其重量只有傳統(tǒng)法蘭止回閥的1/4~1/20;3、對(duì)夾雙瓣蝶形止回閥閥瓣關(guān)閉快速,水錘壓力小;4、水平管道和垂直管道都可以使用,安裝方便;5、對(duì)夾雙瓣蝶形止回閥流到通暢,流體阻力小;6、動(dòng)作靈敏,密封性能好;7、對(duì)夾雙瓣蝶形止回閥閥瓣行程短,沖擊力小;8、整體結(jié)構(gòu)簡(jiǎn)單緊湊,造型美觀;9、使用壽命長(zhǎng),可靠性高。
H76系列主要尺寸及重量 |
壓力級(jí) | 口徑 | 尺寸(mm) | 重量(KG) | 配管法蘭(供參考) | |||||||||
NPS | DN | L | D | D3 | D2 | 螺栓孔中心圓直徑D1 | 螺栓數(shù)量 | 螺栓直徑d | 螺栓長(zhǎng)度L | ||||
ii | mm | RF | RJ | ||||||||||
Class 150PN 2.0MPa | 2 | 50 | 60 | 130 | 56 | 51 | 2 | 120.5 | 4 | 5/8 | M16 | 140 | 155 |
21/2 | 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 | 216.0 | 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 | 266 | 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 | 11/8 | M30 | 365 | 380 | |
20 | 500 | 219 | 604 | 505 | 500 | 163 | 635.0 | 20 | 11/8 | M30 | 385 | 400 | |
24 | 600 | 222 | 715 | 605 | 600 | 331 | 749.5 | 20 | 11/8 | 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 | -- | |
42 | 1050 | 432 | 1142 | 1055 | 1050 | 960 | 1171.5 | 48 | 1 | M27 | 625 | -- | |
48 | 1200 | 524 | 1302 | 1205 | 1200 | 1400 | 1335.0 | 44 | 11/8 | M30 | 740 | -- | |
Class 300PN 5.0MPa | 2 | 50 | 60 | 110 | 58 | 51 | 3 | 127.0 | 8 | 5/8 | M16 | 155 | 175 |
21/2 | 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 | 11/8 | M30 | 365 | 385 | |
14 | 350 | 222 | 483 | 355 | 350 | 117 | 514.5 | 20 | 11/8 | M30 | 410 | 430 | |
16 | 400 | 232 | 537 | 405 | 400 | 190 | 571.5 | 20 | 11/4 | M33 | 435 | 455 | |
18 | 450 | 264 | 594 | 455 | 450 | 200 | 628.0 | 24 | 11/4 | M33 | 475 | 495 | |
20 | 500 | 292 | 652 | 505 | 500 | 265 | 686.0 | 24 | 11/4 | M33 | 510 | 535 | |
24 | 600 | 318 | 772 | 608 | 600 | 410 | 813.0 | 24 | 11/2 | M39 | 560 | 585 | |
30 | 700 | 368 | 882 | 740 | 735 | 660 | 921.0 | 36 | 13/8 | M36 | 650 | -- | |
36 | 900 | 483 | 1044 | 880 | 873 | 1020 | 1089.0 | 32 | 13/8 | M42 | 800 | -- | |
42 | 1050 | 568 | 1196 | 1045 | 1035 | 1540 | 1244.5 | 36 | 13/4 | M45 | 920 | -- | |
48 | 1200 | 629 | 1365 | 1190 | 1179 | 2260 | 1416.0 | 40 | 17/8 | M48 | 1010 | -- |
壓力級(jí) | 口徑 | 尺寸(mm) | 重量(KG) | 配管法蘭(供參考) | |||||||||
NPS | DN | L | D | D3 | D2 | 螺栓孔中心圓直徑D1 | 螺栓數(shù)量 | 螺栓直徑d | 螺栓長(zhǎng)度L | ||||
in | mm | RF | RJ | ||||||||||
CLass600PNB11.0MPa | 2 | 50 | 60 | 110 | 58 | 51 | 4 | 127.0 | 8 | 5/8 | M16 | 175 | 180 |
21/2 | 56 | 67 | 128 | 73 | 65 | 5 | 19.0 | 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 | 39.0 | 12 | 11/8 | M30 | 370 | 375 | |
10 | 250 | 213 | 398 | 266 | 250 | 95 | 432.0 | 16 | 11/4 | M33 | 440 | 445 | |
12 | 300 | 229 | 455 | 312 | 305 | 140 | 489.0 | 20 | 11/4 | M33 | 460 | 465 | |
14 | 350 | 273 | 490 | 355 | 337 | 223 | 527.0 | 20 | 13/8 | M36 | 520 | 525 | |
16 | 400 | 305 | 562 | 400 | 387 | 360 | 603.0 | 20 | 11/2 | M39 | 575 | 580 | |
18 | 450 | 362 | 610 | 450 | 438 | 395 | 654.0 | 20 | 15/8 | M42 | 650 | 655 | |
20 | 500 | 368 | 680 | 500 | 489 | 518 | 724.0 | 24 | 15/8 | M42 | 670 | 680 | |
24 | 600 | 438 | 786 | 600 | 591 | 836 | 838.0 | 24 | 17/8 | M8 | 780 | 790 | |
CLass900PNB15.0MPa | 2 | 50 | 70 | 140 | 58 | 51 | 8 | 165.0 | 8 | 7/8 | M24 | 225 | 230 |
21/2 | 56 | 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 | 11/8 | M30 | 285 | 290 | |
5 | 125 | 110 | 245 | 136 | 127 | 30 | 279.5 | 8 | 11/4 | M33 | 310 | 315 | |
6 | 150 | 159 | 286 | 162 | 150 | 42 | 317.5 | 12 | 11/8 | M30 | 365 | 370 | |
8 | 200 | 206 | 356 | 212 | 200 | 84 | 393.5 | 12 | 13/8 | M36 | 440 | 445 | |
10 | 250 | 241 | 432 | 266 | 250 | 145 | 70.0 | 16 | 13/8 | M36 | 490 | 495 | |
12 | 300 | 292 | 495 | 312 | 305 | 220 | 533.5 | 20 | 13/8 | M36 | 560 | 565 | |
14 | 350 | 356 | 518 | 355 | 337 | 350 | 559.0 | 20 | 11/2 | M39 | 645 | 655 | |
16 | 400 | 384 | 572 | 400 | 387 | 470 | 616.0 | 20 | 15/8 | M42 | 685 | 695 | |
18 | 450 | 451 | 635 | 450 | 438 | 605 | 686.0 | 20 | 17/8 | M48 | 790 | 805 | |
20 | 500 | 451 | 695 | 496 | 487 | 820 | 79.5 | 20 | 2 | M52 | 810 | 825 | |
24 | 600 | 495 | 835 | 600 | 591 | 1050 | 901.5 | 20 | 21/2 | M64 | 945 | 965 | |
CLass1500PNB26.0MPa | 2 | 50 | 70 | 140 | 58 | 51 | 8 | 165.0 | 8 | 7/8 | M24 | 225 | 230 |
21/2 | 56 | 83 | 162 | 73 | 65 | 11 | 190.5 | 8 | 1 | M27 | 250 | 255 | |
3 | 80 | 83 | 172 | 90 | 80 | 19 | 203.0 | 8 | 11/8 | M30 | 270 | 275 | |
4 | 100 | 102 | 207 | 108 | 102 | 26 | 241.5 | 8 | 11/4 | M33 | 310 | 315 | |
5 | 125 | 110 | 252 | 136 | 127 | 51 | 292.0 | 8 | 11/2 | M39 | 370 | 375 | |
6 | 150 | 159 | 280 | 162 | 150 | 68 | 317.5 | 12 | 13/8 | M36 | 430 | 440 | |
8 | 200 | 206 | 350 | 212 | 200 | 130 | 393.5 | 12 | 15/8 | M42 | 510 | 520 | |
10 | 250 | 248 | 433 | 266 | 254 | 210 | 482.5 | 12 | 17/8 | 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 | 21/4 | M56 | 775 | 800 | |
16 | 400 | 384 | 639 | 400 | 387 | 635 | 705.0 | 16 | 21/2 | M64 | 850 | 800 |