详细说明
一、产品[低温截止（节流）阀]的详细资料:
产品名称:低温截止（节流）阀
产品特点:国标低温截止阀,国标低温节流阀,低温截止阀
二、执行标准:
| 设计与制造 | 结构长度 | 浩兰尺寸 | 压力-温度 | 试验-检验 |
| JB/T7749 | GB12221 | JB79 | GB9131 | JB/T9092 |
三、压力试验:
| 公称压力PN | 1.6 | 2.5 | 4.0 |
| 强度试验 | 2.4 | 3.8 | 6.0 |
| 水密封试验 | 1.8 | 2.8 | 4.4 |
| 上密封试验 | 1.8 | 2.8 | 4.4 |
| 气密封试验 | 0.4-0.7 |
四、主要零件材料及性能:
| 体盖板 | 阀杆 | 密封面 | 垫片 | 埴料 | 工作温度℃ | 适用介质 |
| LCB | 1Cr17Ni12 | DTL/DTL | 1Cr13/柔性石墨低温石棉 | PTFE浸四氟乙 烯石棉绳 柔性石墨 | -46 | 丙烷/丙烯 甲醇,乙烷 煤气/液氨 |
| LC1 | -60 |
| LC2 | -73 |
| LC3 | 1Cr18Ni9Ti | -101 |
| LC4 | -115 |
| LC8 | -196 |
五、国标低温截止阀(节流)阀 PNl.6MPa一4.0MPa 规格主要尺寸:
| 1.6MPa | DN | L | D | D1 | D2 | b | n-Φd | H | D0 |
| -46℃ | 4-101℃ | -196℃ |
| 凸面法兰 RFDJ41Y-16LDJ41Y-16L C1DJ41Y-16L C2 DJ41Y-16L C3DJ41Y-16L C4 DJ41Y-16PDJ41Y-16R | 50 | 230 | 160 | 125 | 100 | 16 | 4-Φ18 | 460 | 480 | 520 | 240 |
| 65 | 290 | 180 | 145 | 120 | 18 | 4-Φ18 | 475 | 505 | 525 | 280 |
| 80 | 310 | 195 | 160 | 135 | 20 | 8-Φ18 | 520 | 550 | 590 | 280 |
| 100 | 350 | 215 | 180 | 155 | 20 | 8-Φ18 | 545 | 575 | 615 | 320 |
| 125 | 400 | 245 | 210 | 185 | 22 | 8-Φ18 | 590 | 620 | 660 | 360 |
| 150 | 480 | 280 | 240 | 210 | 24 | 8-Φ23 | 650 | 680 | 730 | 400 |
| 200 | 600 | 335 | 295 | 265 | 26 | 12-Φ23 | 850 | 880 | 930 | 400 |
| 250 | 730 | 405 | 355 | 320 | 30 | 12-Φ25 | 956 | 986 | 1036 | 450 |
| 300 | 850 | 460 | 410 | 375 | 30 | 12-Φ25 | 1095 | 1125 | 1175 | 500 |
| 2.5MPa | 50 | 230 | 160 | 125 | 100 | 20 | 4-Φ18 | 460 | 460 | 520 | 240 |
| 凸面法兰 RFDJ41Y-25LDJ41Y-25L C1DJ41Y-25L C2 DJ41Y-25L C3DJ41Y-25L C4 DJ41Y-25PDJ41Y-25R | 65 | 290 | 180 | 145 | 120 | 22 | 8-Φ18 | 475 | 505 | 525 | 280 |
| 80 | 310 | 195 | 160 | 135 | 22 | 8-Φ18 | 520 | 550 | 590 | 280 |
| 100 | 350 | 230 | 190 | 160 | 24 | 8-Φ23 | 545 | 575 | 615 | 320 |
| 125 | 400 | 270 | 220 | 188 | 28 | 8-Φ25 | 590 | 620 | 660 | 360 |
| 150 | 480 | 300 | 250 | 218 | 30 | 8-Φ25 | 650 | 680 | 730 | 400 |
| 200 | 600 | 360 | 310 | 278 | 34 | 12-Φ25 | 850 | 880 | 930 | 400 |
| 250 | 730 | 425 | 370 | 332 | 36 | 12-Φ30 | 956 | 986 | 1036 | 450 |
| 300 | 850 | 485 | 430 | 390 | 40 | 16-Φ30 | 1095 | 1125 | 1175 | 500 |
| 4.0MPa | 50 | 230 | 160 | 125 | 100 | 20 | 4-Φ18 | 483 | 504 | 546 | 240 |
| 凸面法兰 RFDJ41Y-40LDJ41Y-40L C1DJ41Y-40L C2 DJ41Y-40L C3DJ41Y-40L C4 DJ41Y-40PDJ41Y-40R | 65 | 290 | 180 | 145 | 120 | 22 | 8-Φ18 | 499 | 530 | 551 | 280 |
| 80 | 310 | 195 | 160 | 135 | 22 | 8-Φ18 | 546 | 578 | 620 | 280 |
| 100 | 350 | 230 | 190 | 160 | 24 | 8-Φ23 | 572 | 604 | 646 | 320 |
| 125 | 400 | 270 | 220 | 188 | 28 | 8-Φ25 | 620 | 651 | 693 | 360 |
| 150 | 480 | 330 | 2850 | 218 | 30 | 8-Φ25 | 683 | 741 | 767 | 400 |
| 200 | 600 | 375 | 320 | 282 | 38 | 12-Φ30 | 893 | 924 | 977 | 400 |
| 250 | 730 | 445 | 385 | 345 | 42 | 12-Φ34 | 1004 | 1035 | 1088 | 450 |
| 300 | 850 | 510 | 450 | 408 | 46 | 16-Φ34 | 1150 | 1181 | 1234 | 500 |