产品概述：
J41H、J41W美标法兰截止阀适用于公称压力PN1．6～16MPa，工作温度-29～550℃的石油、化工、制药、化肥、电力行业等各种工况的管路上，切断或接通管路介质。驱动体例有手动、齿轮传动、电动、气动等。
结构特点：
1.流线型，明杆带支架
2.中法兰螺栓连接
3.活套连接阀瓣
4.升降阀杆与手轮
5.支架与阀盖一体式
6.伞齿轮操作选配
7.标准法兰连接
产品规范：
| 产品规范 | 设计规范 | 结构长度 | 连接法兰 | 试验与检验 | 压力-温度 | 产品标识 | 供货规范 |
| asme b16.34 | ansib 16.10 | ansib 16.5 | api598 | asme b 16.34 | mss sp-25 | asme b16.34 | |
| bs 5160 | bs 5160 |
重要设计标准：
| 设计与制造 | 结构长度 | 法兰尺寸 | 对焊连接尺寸 | 压力-温度 | 试验-检验 |
| ansi b16.34 bs1873 | ansi b16.10 | ansi b16.5 | ansi b16.25 | ansi b16.34 | api 598 |
压力试验：
| 公称压力pn(lb) | 强度试验 | 水密封试验 | 气密封试验 | |||
| mpa | lbf/in2 | mpa | lbf/in2 | mpa | lbf/in2 | |
| 150 | 3.0 | 430 | 2.2 | 315 | 0.4-0.7 | 60-100 |
| 300 | 7.7 | 1110 | 5.7 | 815 | ||
| 600 | 15.3 | 2220 | 11.3 | 1630 | ||
| 900 | 23.0 | 3330 | 17.0 | 2445 | ||
| 1500 | 38.4 | 5560 | 28.2 | 4080 | ||
| 2500 | 64.0 | 9255 | 47.0 | 6790 | ||
重要零件材料及性能：
| 阀体、阀盖 | 阀杆 | 密封面 | 垫片（环） | 填料 | 工作温度 | 适用介质 |
| wcb | 2cr13 | 13cr stl 木体材料 with body material 尼龙 nylon | 加强柔性石墨 13cr/柔性石墨 enhanced flexible graphite 1cr13/flexible graphite sfb-2 08软钢 08 soft steal f304 f316 f304l f316l | 柔性石墨 加强柔性石墨 flexible graphite enhanced flexible graphite sfb/260 sfp/260 ptfe | ≤425 | 水、蒸汽、油品 water steam petroleum products |
| wc1 | 38crmoal 25cr2mov | ≤425 | ||||
| wc6 | ≤540 | |||||
| wc9 | ≤570 | |||||
| c5 c12 | ≤540 | |||||
| cf8 | f304 | ≤200 | 硝酸、醋酸、尿素 nitric acid acetic acid | |||
| cf8m | f316 | |||||
| cf3 | f304l | |||||
| cf3m | f316l |
150lb重要尺寸和重量：
| dn | 150lb 凸面法兰（rf)重要尺寸（mm） | 重量 | ||||||||
| mm | in | l | d | d1 | d2 | b | n-φd | h | d0 | |
| 15 | 1/2 | 108 | 89 | 60.5 | 35 | 11.2 | 4-16 | 241 | 100 | 6.9 |
| 20 | 3/4 | 117 | 98 | 69.9 | 43 | 12.7 | 4-16 | 241 | 100 | 9.8 |
| 25 | 1 | 127 | 108 | 79.2 | 51 | 14.2 | 4-16 | 242 | 125 | 13.5 |
| 32 | 11/4 | 140 | 117 | 89 | 63 | 16 | 4-16 | 280 | 160 | 19.5 |
| 40 | 11/2 | 165 | 127 | 98.6 | 73 | 17.5 | 4-16 | 286 | 160 | 28.5 |
| 50 | 2 | 203 | 152 | 120.7 | 92 | 19 | 4-19 | 368 | 200 | 18 |
| 65 | 21/2 | 216 | 178 | 139.7 | 105 | 22.4 | 4-19 | 387 | 200 | 30 |
| 80 | 3 | 241 | 190 | 152.4 | 127 | 24 | 4-19 | 411 | 250 | 41 |
| 100 | 4 | 292 | 229 | 190.5 | 157 | 24 | 4-19 | 454 | 250 | 64 |
| 125 | 5 | 356 | 254 | 216.0 | 186 | 24 | 8-22.5 | 455 | 350 | 86 |
| 150 | 6 | 406 | 279 | 241.3 | 216 | 25.4 | 8-22.5 | 541 | 350 | 113 |
| 200 | 8 | 495 | 343 | 298.5 | 270 | 28.4 | 8-22.5 | 651 | 450 | 178 |
| 250 | 10 | 622 | 406 | 362.0 | 324 | 30.2 | 12-25.4 | 800 | 450 | 270 |
| 300 | 12 | 698 | 483 | 431.8 | 381 | 32 | 12-25.4 | 1231 | 600 | 350 |
| 350 | 14 | 787 | 533 | 476.3 | 413 | 35 | 12-29 | 1450 | 600 | 460 |
| 400 | 16 | 914 | 597 | 539.8 | 470 | 36.6 | 26-29 | 1645 | 600 | 590 |
300lb重要尺寸和重量：
| dn | 300lb 凸面法兰（rf)重要尺寸（mm） | 重量 | ||||||||
| 15 | 1/2 | 152 | 95 | 66.5 | 35 | 14.2 | 4-16 | 241 | 140 | 7.7 |
| 20 | 3/4 | 178 | 117 | 82.5 | 43 | 16 | 4-19 | 241 | 140 | 11.3 |
| 25 | 1 | 203 | 123 | 89 | 51 | 17.5 | 4-19 | 283 | 160 | 16.8 |
| 32 | 11/4 | 216 | 133 | 98.5 | 63 | 19 | 4-19 | 320 | 200 | 21.2 |
| 40 | 11/2 | 229 | 155 | 114.3 | 73 | 20.6 | 4-22.5 | 322 | 200 | 32.6 |
| 50 | 2 | 267 | 165 | 127 | 92 | 22.4 | 8-19 | 399 | 200 | 25 |
| 65 | 21/2 | 292 | 190 | 149.4 | 105 | 25.4 | 8-22.5 | 438 | 250 | 30 |
| 80 | 3 | 318 | 210 | 168.1 | 127 | 28.4 | 8-22.5 | 464 | 280 | 35 |
| 100 | 4 | 356 | 254 | 200.2 | 157 | 31.8 | 8-22.5 | 565 | 350 | 56 |
| 125 | 5 | 400 | 279 | 235 | 186 | 35 | 8-22.5 | 614 | 350 | 96 |
| 150 | 6 | 444 | 318 | 269.7 | 216 | 36.6 | 12-25.4 | 717 | 400 | 120 |
| 200 | 8 | 559 | 381 | 330.2 | 270 | 41.2 | 12-25.4 | 930 | 500 | 212 |
| 250 | 10 | 622 | 444 | 387.4 | 324 | 47.8 | 16-28.5 | 1012 | 550 | 330 |
| 300 | 12 | 711 | 521 | 450.8 | 381 | 50.8 | 16-32 | 1231 | 600 | 472 |
| 350 | 14 | 762 | 584 | 514.4 | 413 | 54 | 20-32 | 1450 | 600 | 715 |
| 400 | 16 | 864 | 648 | 571.5 | 470 | 57.2 | 20-35 | 1645 | 600 | 920 |
600lb重要尺寸和重量：
| dn | 600lb 凸面法兰（rf）重要尺寸（mm） | 重量 | ||||||||
| mm | in | l | d | d1 | d2 | b | n-φd | h | d0 | |
| 15 | 1/2 | 165 | 95 | 66.5 | 35 | 14.5 | 4-16 | 285 | 100 | 7.8 |
| 20 | 3/4 | 190 | 117 | 82.5 | 43 | 16 | 4-19 | 285 | 125 | 12.5 |
| 25 | 1 | 216 | 124 | 89 | 51 | 17.5 | 4-19 | 313 | 160 | 17.5 |
| 32 | 11/4 | 229 | 133 | 98.5 | 63 | 21 | 4-19 | 328 | 160 | 23.5 |
| 40 | 11/2 | 241 | 156 | 114.3 | 73 | 22.5 | 4-22.5 | 365 | 180 | 38.5 |
| 50 | 2 | 292 | 165 | 127 | 92 | 33 | 8-19 | 444 | 200 | 35 |
| 65 | 21/2 | 330 | 190 | 149.4 | 105 | 36 | 8-22.5 | 483 | 250 | 50 |
| 80 | 3 | 356 | 210 | 168.1 | 127 | 39 | 8-22.5 | 533 | 250 | 60 |
| 100 | 4 | 432 | 273 | 216 | 157 | 45 | 8-25.4 | 622 | 350 | 110 |
| 125 | 5 | 508 | 330 | 266.7 | 186 | 52 | 8-28.5 | 750 | 350 | 200 |
| 150 | 6 | 559 | 356 | 292.1 | 216 | 55 | 12-28.5 | 800 | 450 | 230 |
| 200 | 8 | 660 | 419 | 349.3 | 270 | 63 | 12-32 | 927 | 500 | 410 |
| 250 | 10 | 787 | 508 | 431.8 | 324 | 71 | 16-35 | 1257 | 600 | 625 |
| 300 | 12 | 838 | 559 | 489 | 381 | 74 | 20-35 | 1468 | 680 | 860 |
