一、低溫截止閥概述:
低溫截止閥適用于低溫液體貯運(yùn)設(shè)備的管理系統(tǒng),低溫截止閥具有開(kāi)關(guān)靈活、密封可靠的特點(diǎn),也可用于其他低溫和深冷介質(zhì)的管理系統(tǒng).。常溫截止閥是指介質(zhì)的使用溫度-40~+500度之間,閥體的材料也不一樣。低溫截止閥主要是指介質(zhì)使用溫度在-196~-150度的低溫液態(tài)介質(zhì)系統(tǒng)中的截止閥。
二、低溫截止閥主要選用材料表:
零件名稱 閥體、閥蓋 閥桿、閥瓣 填料 支架 材料 A352-LCB
A352-LC3
A351-CF8A182-F304 聚四氟乙烯 A216-WCB
三、低溫截止閥主要性能范圍:
體蓋板 | 閥桿 | 密封面 | 墊片 | 埴料 | 工作溫度℃ | 適用介質(zhì) |
LCB | 1Cr17Ni12 | DTL/DTL | 1Cr13/柔性石墨低溫石棉 | PTFE 浸四氟乙 烯石棉繩 柔性石墨 | -46 | 丙烷/丙烯 甲醇,乙烷 煤氣/液氨 |
LC1 | -60 | |||||
LC2 | -73 | |||||
LC3 | 1Cr18Ni9Ti | -101 | ||||
LC4 | -115 | |||||
LC8 | -196 |
四、低溫截止閥外形圖及連接尺寸表:
公稱通徑 | 主要外形尺寸和連接尺寸 | H | ||||||||
L | D | D1 | D2 | b | Z-d | D0 | -46℃ | -101℃ | -196℃ | |
DJ41Y-16C DJ41Y-16P DJ41Y-16R DJ641Y-16C DJ641Y-16P DJ641Y-16R DJ9B41Y-16C DJ9B41Y-16P DJ9B41Y-16R | ||||||||||
50 | 230 | 160 | 125 | 100 | 16 | 4-18 | 240 | 460 | 480 | 520 |
65 | 290 | 180 | 145 | 120 | 18 | 4-18 | 280 | 475 | 505 | 525 |
80 | 310 | 195 | 160 | 135 | 20 | 8-18 | 280 | 520 | 550 | 590 |
100 | 350 | 215 | 180 | 155 | 20 | 8-18 | 320 | 545 | 575 | 615 |
125 | 400 | 245 | 210 | 185 | 22 | 8-18 | 360 | 590 | 620 | 660 |
150 | 480 | 280 | 240 | 210 | 24 | 8-23 | 400 | 650 | 650 | 730 |
200 | 600 | 335 | 295 | 265 | 26 | 12-23 | 400 | 850 | 850 | 930 |
250 | 730 | 405 | 355 | 320 | 30 | 12-25 | 450 | 956 | 986 | 1036 |
300 | 850 | 460 | 410 | 375 | 30 | 12-25 | 500 | 1095 | 1125 | 1175 |
DJ41Y-25 DJ41Y-25P DJ41Y-25R DJ641Y-25C DJ641Y-25P DJ641Y-25R DJ9B41Y-25C DJ9B41Y-25P DJ9B41Y-25R | ||||||||||
50 | 230 | 160 | 125 | 100 | 20 | 4-18 | 240 | 460 | 480 | 520 |
65 | 290 | 180 | 145 | 120 | 22 | 8-18 | 280 | 475 | 505 | 525 |
80 | 310 | 195 | 160 | 135 | 22 | 8-18 | 280 | 520 | 550 | 590 |
100 | 350 | 230 | 190 | 160 | 24 | 8-23 | 320 | 545 | 575 | 615 |
125 | 400 | 270 | 220 | 188 | 28 | 8-25 | 360 | 590 | 620 | 660 |
150 | 480 | 300 | 250 | 218 | 30 | 8-25 | 400 | 650 | 680 | 730 |
200 | 600 | 360 | 310 | 278 | 34 | 12-25 | 400 | 850 | 880 | 930 |
250 | 730 | 425 | 370 | 332 | 36 | 12-30 | 450 | 956 | 986 | 1036 |
300 | 850 | 485 | 430 | 390 | 40 | 16-30 | 500 | 1095 | 1125 | 1175 |
DJ41Y-40 DJ41Y-40P DJ41Y-40R DJ641Y-40C DJ641Y-40P DJ641Y-40R DJ9B41Y-40C DJ9B41Y-40P DJ9B41Y-40R | ||||||||||
50 | 230 | 160 | 125 | 100 | 20 | - | 240 | 483 | 504 | 546 |
65 | 290 | 180 | 145 | 120 | 22 | - | 280 | 499 | 530 | 551 |
80 | 310 | 195 | 160 | 135 | 22 | - | 280 | 546 | 578 | 620 |
100 | 350 | 230 | 190 | 160 | 24 | - | 320 | 572 | 604 | 646 |
125 | 400 | 270 | 220 | 188 | 28 | - | 360 | 620 | 61 | 693 |
150 | 480 | 300 | 250 | 218 | 30 | - | 400 | 683 | 741 | 767 |
200 | 600 | 360 | 320 | 282 | 38 | - | 400 | 893 | 924 | 977 |
250 | 730 | 425 | 385 | 345 | 42 | - | 450 | 1004 | 1035 | 1088 |
300 | 850 | 485 | 450 | 408 | 46 | - | 500 | 1150 | 1181 | 1234 |