Q647型氣動固定式球閥的球體．采用上、下兩根閥桿固定．工作時，流體壓力不會使球體向閥座移動，閥座不會承受過大壓力而變形。閥桿部分設有自潤滑軸承，減少磨擦，開關扭距小，兩閥座均采用彈簧設預緊。密封采用聚四氟乙烯鑲入鋼固內，鋼圈后部設有彈簧，保證閥座緊貼球體。當閥門中腔壓力異常升高超過彈簧頂緊力，閥座后退脫離球體，達到自動泄壓效果，壓后閥座自動復位。結構的*性使固定球閥的密封性能穩(wěn)定操作省力，使用壽命長 ,極適用于長輸管線和一般管線。
主要連接尺寸(GB規(guī)格)
| 壓力 PN(Mpa) | 公稱通徑 Dn(Mpa) | ||||||||
| L | D | DI | D2 | b | f | Z-φd | H(347型) | ||
| 1.6 | 50 | 216 | 160 | 125 | 100 | 18 | 3 | 4-18 | - |
| 65 | 24l | 180 | 145 | 120 | 18 | 3 | 4-18 | - | |
| 80 | 283 | 196 | 160 | 136 | 20 | 3 | 8-18 | - | |
| 100 | 306 | 215 | 180 | 165 | 20 | 3 | 8-18 | - | |
| 125 | 356 | 245 | 2lO | 185 | 22 | 3 | 8-18 | - | |
| 150 | 394 | 280 | 24O | 2lO | 24 | 3 | 8-23 | 305 | |
| 200 | 467 | 336 | 296 | 266 | 26 | 3 | 12-23 | 398 | |
| 250 | 53S | 405 | 355 | 320 | 30 | 3 | 12-25 | 495 | |
| 300 | 6lO | 460 | 4lO | 375 | 30 | 4 | 12-25 | 580 | |
| 350 | 686 | 620 | 470 | 436 | 34 | 4 | 16-26 | 625 | |
| 400 | 762 | 580 | 626 | 485 | 36 | 4 | 16-30 | 720 | |
| 450 | 864 | 64O | 585 | 545 | 40 | 4 | 20-30 | 770 | |
| 500 | 914 | 706 | 650 | 808 | 44 | 4 | 20-34 | 840 | |
| 600 | 1067 | 84O | 770 | 718 | 48 | 4 | 20-41 | 920 | |
| 700 | 1245 | 9lO | 840 | 788 | 50 | 5 | 24-41 | 990 | |
| 2.5 | 50 | 216 | 160 | 125 | 100 | 20 | 3 | 4-18 | - |
| 65 | 24l | 180 | 145 | 120 | 22 | 3 | 8-18 | - | |
| 80 | 288 | 195 | 180 | 135 | 22 | 3 | 8-18 | - | |
| 100 | 305 | 230 | 190 | 160 | 24 | 3 | 8-23 | - | |
| 126 | 38l | 270 | 220 | 188 | 28 | 3 | 8-26 | - | |
| 150 | 403 | 300 | 250 | 218 | 30 | 3 | 8-25 | 305 | |
| 200 | 602 | 360 | 3lO | 278 | 34 | 3 | 12-25 | 398 | |
| 260 | 568 | 426 | 370 | 332 | 36 | 3 | 12-30 | 495 | |
| 300 | 648 | 485 | 430 | 390 | 40 | 4 | 16-30 | 580 | |
| 350 | 762 | 550 | 490 | 448 | 44 | 4 | 16-34 | 625 | |
| 400 | 8S8 | 6lO | 650 | 505 | 48 | 4 | 16-34 | 720 | |
| 450 | 914 | 660 | 600 | 666 | 60 | 4 | 20-34 | 770 | |
| 500 | 99l | 730 | 660 | 6lO | 52 | 4 | 20-4l | 840 | |
| 600 | 1143 | 84O | 770 | 718 | 56 | 5 | 20-4l | 920 | |
| 700 | 1346 | 956 | 875 | 816 | 60 | 6 | 24-48 | 990 | |
| 4．O | 50 | 216 | 160 | 125 | 100 | 20 | 3 | 4-18 | - |
| 65 | 24l | 180 | 145 | 120 | 22 | 3 | 8-18 | - | |
| 80 | 293 | 196 | 160 | 136 | 22 | 3 | 8-18 | - | |
| 100 | 305 | 230 | 190 | 160 | 24 | 3 | 8-23 | - | |
| 125 | 38I | 270 | 220 | 188 | 28 | 3 | 8-25 | - | |
| 150 | 403 | 300 | 250 | 218 | 30 | 3 | 8-25 | 305 | |
| 200 | 602 | 376 | 320 | 282 | 38 | 3 | 12-30 | 398 | |
| 250 | 568 | 445 | 385 | 345 | 42 | 3 | 12-34 | 495 | |
| 300 | 648 | 5lO | 450 | 408 | 46 | 4 | 16-34 | 580 | |
| 350 | 762 | 570 | 5lO | 466 | 52 | 4 | 16-34 | 625 | |
| 400 | 838 | 656 | 685 | 636 | 68 | 4 | 16-41 | 720 | |
| 450 | 914 | 680 | 6lO | 560 | 60 | 4 | 20-4l | 770 | |
| 500 | 99l | 755 | 670 | 612 | 62 | 4 | 20-48 | 840 | |
| 600 | 1143 | 890 | 795 | 730 | 62 | 6 | 20-48 | 920 | |
| 700 | 1346 | 996 | 900 | 835 | 68 | 5 | 24-54 | 990 | |
| 6.4 | 50 | 292 | 175 | 135 | 105 | 26 | 3 | 4-23 | - |
| 65 | 330 | 200 | 160 | 130 | 28 | 3 | 8-23 | - | |
| 80 | 366 | 2lO | 170 | 14O | 30 | 3 | 8-23 | - | |
| 100 | 4S2 | 260 | 200 | 168 | 32 | 3 | 8-26 | - | |
| 125 | 508 | 295 | 240 | 202 | 36 | 3 | 8-30 | 340 | |
| 160 | 669 | 340 | 280 | 240 | 38 | 3 | 8-34 | 435 | |
| 200 | 660 | 406 | 345 | 300 | 44 | 3 | 12-34 | - | |
| 250 | 787 | 470 | 4OO | 352 | 48 | 3 | 12-41 | - | |
| 300 | 838 | 5SO | 460 | 412 | 54 | 4 | 16-4l | - | |
| 360 | 889 | 595 | 526 | 476 | 60 | 4 | 16-41 | - | |
| 400 | 99l | 670 | 686 | 526 | 66 | 4 | 16-48 | - | |
