制藥網(wǎng)
詳細(xì)介紹
低溫止回閥 概述
低溫止回閥是指依靠介質(zhì)本身流動而自動開、閉閥瓣，用來防止介質(zhì)倒流的閥門。它屬于一種自動閥門，其主要作用是防止介質(zhì)倒流、還可用于超過系統(tǒng)壓的輔助系統(tǒng)提供補給的管路上。
低溫止回閥 尺寸范圍
ANSI 150# 1/2"~ 30"
ANSI 300# 1/2"~ 30"
ANSI 600# 1/2" ~ 30"
ANSI 900# 3/4"~ 16"
ANSI 1500# 1/2" ~ 8"
ANSI 2500# 1/2"~ 6"
低溫止回閥 結(jié)構(gòu)特點
閥體為鑄造一體式， 無外泄漏點，承受壓力高，且剛性好便于維護;金屬硬密封結(jié)構(gòu)，密封面堆焊硬質(zhì)合金，抗沖刷;閥瓣自密封結(jié)構(gòu)，閥瓣與搖桿的配合面為球形面，能夠產(chǎn)生微量轉(zhuǎn)動提高密封面的吻合度保證密封性能;銷軸內(nèi)置結(jié)構(gòu)，在閥體中腔處設(shè)置了一個凸臺通過螺栓連接搖桿架形成內(nèi)置銷軸架，該結(jié)構(gòu)避免了常規(guī)旋啟式止回閥通常采用直接在閥體上打銷軸孔用墊片和螺塞形成密封的結(jié)構(gòu)形式，從根本上杜絕轉(zhuǎn)軸結(jié)構(gòu)引起的泄露，提高了閥門的可靠性;低壓差開啟結(jié)構(gòu);閥瓣多重防松結(jié)構(gòu):閥瓣采用鎖緊螺母+鎖緊墊片+開口銷的多重防松結(jié)構(gòu)，安全可靠。
低溫止回閥 外形尺寸及參考數(shù)據(jù)
低溫止回閥 主要連接尺寸CLASS 150
| DN | 15 | 20 | 25 | 40 | 50 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 750 | |
| NPS | 1/2" | 3/4" | 1" | 1-1/2" | 2" | 3" | 4" | 6" | 8" | 10" | 12" | 14" | 16" | 18" | 20" | 24" | 30" | |
| L(BW) | 108 | 117 | 127 | 165 | 203 | 241 | 292 | 356 | 495 | 622 | 699 | 787 | 836.6 | 978 | 978 | 1295 | 1524 | |
| L(RF) | 108 | 117 | 127 | 165 | 203 | 241 | 292 | 356 | 495 | 622 | 699 | 787 | 836.6 | 978 | 978 | 1295 | 1524 | |
| D | 15 | 20 | 25 | 38 | 52 | 76 | 102 | 152 | 203 | 254 | 305 | 335 | 387 | 438 | 489 | 590 | 737 | |
| H | 105 | 108 | 112 | 126 | 143 | 186 | 210 | 247 | 304 | 331 | 410 | 459 | 499 | 552 | 572 | 670 | 800 | |
| weight | BW | 7 | 10 | 10 | 11 | 13 | 20 | 32 | 61 | 115 | 200 | 270 | 420 | 520 | 595 | 735 | 1325 | 2240 |
| (kg) | RF | 11 | 11 | 12 | 14 | 18 | 28 | 45 | 70 | 130 | 230 | 330 | 460 | 580 | 660 | 810 | 1400 | 2330 |
CLASS 300
| DN | 15 | 20 | 25 | 40 | 50 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 750 | |
| NPS | 1/2" | 3/4" | 1" | 1-1/2" | 2" | 3" | 4" | 6" | 8" | 10" | 12" | 14" | 16" | 18" | 20" | 24" | 30" | |
| L(BW) | 152 | 178 | 203 | 227 | 267 | 318 | 356 | 445 | 533 | 622 | 711 | 838 | 864 | 978 | 1016 | 1346 | 1594 | |
| L(RF) | 152 | 178 | 203 | 227 | 267 | 318 | 356 | 445 | 533 | 622 | 711 | 838 | 864 | 978 | 1016 | 1346 | 1594 | |
| D | 15 | 20 | 28 | 38 | 52 | 76 | 102 | 152 | 203 | 251 | 304 | 335 | 387 | 432 | 483 | 584 | 737 | |
| H | 105 | 108 | 112 | 134 | 152 | 184 | 222 | 275 | 328 | 392 | 451 | 487 | 552 | 591 | 622 | 721 | 860 | |
| weight | BW | 10 | 10 | 11 | 12 | 18 | 30 | 40 | 95 | 150 | 265 | 330 | 530 | 730 | 1030 | 1130 | 1930 | 3005 |
| (kg) | RF | 12 | 12 | 12 | 13 | 25 | 45 | 60 | 125 | 220 | 320 | 445 | 610 | 570 | 1150 | 1250 | 2065 | 3150 |
CLASS 600
| DN | 15 | 20 | 25 | 40 | 50 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | 450 | 500 | 600 | 700 | 750 | |
| NPS | 1/2" | 3/4" | 1" | 1-1/2" | 2" | 3" | 4" | 6" | 8" | 10" | 12" | 14" | 16" | 18" | 20" | 24" | 28" | 30" | |
| L(BW) | 165 | 190 | 216 | 241 | 292 | 356 | 432 | 559 | 660 | 787 | 838 | 889 | 991 | 1092 | 1194 | 1397 | 1600 | 1651 | |
| L(RF) | 165 | 190 | 216 | 241 | 292 | 356 | 432 | 559 | 660 | 787 | 838 | 889 | 991 | 1092 | 1194 | 1397 | 1600 | 1651 | |
| D | 15 | 20 | 26 | 38 | 52 | 76 | 101 | 152 | 203 | 248 | 298 | 327 | 375 | 419 | 489 | 559 | 695 | 695 | |
| H | 13 | 118 | 122 | 136 | 198 | 217 | 279 | 366 | 424 | 522 | 564 | 593 | 624 | 705 | 784 | 839 | 1088 | 1088 | |
| weight | BW
| 10 | 13 | 13 | 21 | 27 | 45 | 80 | 165 | 310 | 510 | 705 | 970 | 1358 | 1520 | 2350 | 2958 | - | 5612 |
| (kg)
| RF | 14 | 14 | 17 | 25 | 30 | 60 | 105 | 205 | 335 | 625 | 832 | 1107 | 1498 | 1900 | 2700 | 3310 | - | 5800 |
CLASS 900
| DN | 20 | 25 | 40 | 50 | 80 | 100 | 150 | 200 | 250 | 300 | 350 | 400 | |
| NPS | 3/4" | 1" | 1-1/2" | 2" | 3" | 4" | 6" | 8" | 10" | 12" | 14" | 16" | |
| L(BW) | 229 | 254 | 305 | 368 | 381 | 457 | 610 | 737 | 838 | 965 | 1029 | 1130 | |
| L(RF) | 229 | 254 | 305 | 368 | 381 | 457 | 610 | 737 | 838 | 965 | 1029 | 1130 | |
| D | 18 | 25 | 35 | 50 | 78 | 102 | 147 | 191 | 238 | 283 | 311 | 356 | |
| H | 118 | 122 | 167 | 237 | 265 | 317 | 402 | 474 | 557 | 597 | 640 | 678 | |
| weight | BW
| 20 | 26 | 35 | 64 | 80 | 125 | 240 | 465 | 752 | 1200 | 1400 | 1708 |
| (kg)
| RF | 25 | 30 | 40 | 75 | 95 | 160 | 300 | 498 | 868 | 1342 | 1700 | 2100 |
CLASS 1500
| DN | 15 | 20 | 25 | 40 | 50 | 80 | 100 | 150 | 200 | |
| NPS | 1/2" | 3/4" | 1" | 1-1/2" | 2" | 3" | 4" | 6" | 8" | |
| L(BW) | 216 | 227 | 254 | 305 | 368 | 470 | 546 | 705 | 832 | |
| L(RF) | 216 | 5 | 254 | 305 | 368 | 470 | 546 | 705 | 832 | |
| D | 13 | 18 | 25 | 35 | 48 | 70 | 92 | 137 | 178 | |
| H | 113 | 118 | 122 | 167 | 237 | 296 | 342 | 469 | 553 | |
| weight | BW
| 18 | 20 | 25 | 35 | 62 | 109 | 180 | 410 | 652 |
| (kg)
| RF | 25 | 25 | 30 | 40 | 75 | 128 | 225 | 508 | 900 |
CLASS 2500
| DN | 15 | 20 | 25 | 40 | 50 | 80 | 100 | 150 | |
| NPS | 1/2" | 3/4" | 1" | 1-1/2" | 2" | 3" | 4" | 6" | |
| L(BW) | 264 | 273 | 308 | 384 | 451 | 578 | 673 | 914 | |
| L(RF) | 264 | 273 | 308 | 384 | 451 | 578 | 673 | 914 | |
| D | 11 | 15 | 19 | 34 | 52 | 57 | 73 | 111 | |
| H | 140 | 147 | 164 | 217 | 290 | 366 | 426 | 582 | |
| weight | BW
| 25 | 38 | 48 | 57 | 90 | 200 | 310 | 525 |
| (kg)
| RF | 32 | 43 | 54 | 65 | 106 | 225 | 328 | 620 |
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