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 |