Dimensions of PN 2.5 flanges
DN | Outside diameter $ D $ , in $ \mathrm{mm} $ | Diameter of bolt circle $ K $ , in $ \mathrm{mm} $ | Diameter of bolt hole $ L $ , in $ \mathrm{mm} $ | Number of bolts | Bolts size | Outside diameter of neck $ A $ , in $ \mathrm{mm} $ | Bore diameters $ B_1 $ , in $ \mathrm{mm} $ | Bore diameters $ B_2 $ , in $ \mathrm{mm} $ | Flange thickness $ C_1 $ , in $ \mathrm{mm} $ | Flange thickness $ C_2 $ , in $ \mathrm{mm} $ | Flange thickness $ C_3 $ , in $ \mathrm{mm} $ | Flange thickness $ C_4 $ , in $ \mathrm{mm} $ | Collar thickness $ F_1 $ , in $ \mathrm{mm} $ | Collar thickness $ F_2 $ , in $ \mathrm{mm} $ | Collar thickness $ F_3 $ , in $ \mathrm{mm} $ | Collar thickness $ F_4 $ , in $ \mathrm{mm} $ | Centre portion $ G_{max} $ , in $ \mathrm{mm} $ | Length $ H_2 $ , in $ \mathrm{mm} $ | Length $ H_3 $ , in $ \mathrm{mm} $ | Length $ H_4 $ , in $ \mathrm{mm} $ | Length $ H_5 $ , in $ \mathrm{mm} $ | Length $ H_6 $ , in $ \mathrm{mm} $ | Neck diameters $ N_1 $ , in $ \mathrm{mm} $ | Neck diameters $ N_3 $ , in $ \mathrm{mm} $ | Corner radius $ R_1 $ , in $ \mathrm{mm} $ |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
10 | 75 | 50 | 11 | 4 | M10 | 17.2 | 18 | 21 | 12 | 12 | 12 | 12 | 10 | 5 | 2 | 2.5 | - | 28 | 6 | 28 | 7 | 35 | 26 | 20 | 4 |
15 | 80 | 55 | 11 | 4 | M10 | 21.3 | 22 | 25 | 12 | 12 | 12 | 12 | 10 | 5 | 2 | 2.5 | - | 30 | 6 | 30 | 7 | 38 | 30 | 26 | 4 |
20 | 90 | 65 | 11 | 4 | M10 | 26.9 | 27.5 | 31 | 14 | 14 | 14 | 14 | 10 | 6 | 2.5 | 3 | - | 32 | 6 | 32 | 8 | 40 | 38 | 34 | 4 |
25 | 100 | 75 | 11 | 4 | M10 | 33.7 | 34.5 | 38 | 14 | 14 | 14 | 14 | 10 | 7 | 2.5 | 3 | - | 35 | 6 | 35 | 10 | 40 | 42 | 44 | 4 |
32 | 120 | 90 | 14 | 4 | M12 | 42.4 | 43.5 | 46 | 16 | 14 | 14 | 14 | 10 | 8 | 3 | 3 | - | 35 | 6 | 35 | 12 | 42 | 55 | 54 | 6 |
40 | 130 | 100 | 14 | 4 | M12 | 48.3 | 49.5 | 53 | 16 | 14 | 14 | 14 | 10 | 8 | 3 | 3 | - | 38 | 7 | 38 | 15 | 45 | 62 | 64 | 6 |
50 | 140 | 110 | 14 | 4 | M12 | 60.3 | 61.5 | 65 | 16 | 14 | 14 | 14 | 12 | 8 | 3 | 3 | - | 38 | 8 | 38 | 20 | 45 | 74 | 74 | 6 |
65 | 160 | 130 | 14 | 4 | M12 | 76.1 | 77.5 | 81 | 16 | 14 | 14 | 14 | 12 | 8 | 3 | 3 | 55 | 38 | 9 | 38 | 20 | 45 | 88 | 94 | 6 |
80 | 190 | 150 | 18 | 4 | M16 | 88.9 | 90.5 | 94 | 18 | 16 | 16 | 16 | 12 | 10 | 3 | 4 | 70 | 42 | 10 | 42 | 25 | 50 | 102 | 110 | 8 |
100 | 210 | 170 | 18 | 4 | M16 | 114.3 | 116 | 120 | 18 | 16 | 16 | 16 | 14 | 10 | 4 | 4 | 90 | 45 | 10 | 45 | 25 | 52 | 130 | 130 | 8 |
125 | 240 | 200 | 18 | 8 | M16 | 139.7 | 141.5 | 145 | 20 | 18 | 18 | 18 | 14 | 10 | 4 | 4 | 115 | 48 | 10 | 48 | 25 | 55 | 155 | 160 | 8 |
150 | 265 | 225 | 18 | 8 | M16 | 168.3 | 170.5 | 174 | 20 | 18 | 18 | 18 | 14 | 10 | 5 | 4 | 140 | 48 | 12 | 48 | 25 | 55 | 184 | 182 | 10 |
200 | 320 | 280 | 18 | 8 | M16 | 219.1 | 221.5 | 226 | 22 | 20 | 20 | 20 | 16 | 11 | 5 | 5 | 190 | 55 | 15 | 55 | 30 | 62 | 236 | 238 | 10 |
250 | 375 | 335 | 18 | 12 | M16 | 273 | 276.5 | 281 | 24 | 22 | 22 | 22 | 18 | 12 | 8 | - | 235 | 60 | 15 | 60 | - | 68 | 290 | 284 | 12 |
300 | 440 | 395 | 22 | 12 | M20 | 323.9 | 327.5 | 333 | 24 | 22 | 22 | 22 | 18 | 12 | 8 | - | 285 | 62 | 15 | 62 | - | 68 | 342 | 342 | 12 |
350 | 490 | 445 | 22 | 12 | M20 | 355.6 | 359.5 | 365 | 26 | 22 | 22 | 22 | 18 | 13 | 8 | - | 330 | 62 | 15 | 62 | - | 68 | 385 | 392 | 12 |
400 | 540 | 495 | 22 | 16 | M20 | 406.4 | 411 | 416 | 28 | 22 | 22 | 22 | 20 | 14 | 8 | - | 380 | 65 | 15 | 65 | - | 72 | 438 | 442 | 12 |
450 | 595 | 550 | 22 | 16 | M20 | 457 | 462 | 467 | 30 | 22 | 22 | 24 | 20 | 15 | 8 | - | 425 | 65 | 15 | 65 | - | 72 | 492 | 494 | 12 |
500 | 645 | 600 | 22 | 20 | M20 | 508 | 513.5 | 519 | 30 | 24 | 24 | 24 | 22 | 16 | 8 | - | 475 | 68 | 15 | 68 | - | 75 | 538 | 544 | 12 |
600 | 755 | 705 | 26 | 20 | M24 | 610 | 616.5 | 622 | 32 | 30 | 30 | 30 | 22 | 16 | - | - | 575 | 70 | 16 | 70 | - | - | 640 | 642 | 12 |
700 | 860 | 810 | 26 | 24 | M24 | 711 | - | 721 | 40 | 30 | 30 | 40 | - | 16 | - | - | 670 | 76 | 16 | 70 | - | - | 740 | 746 | 12 |
800 | 975 | 920 | 30 | 24 | M27 | 813 | - | 824 | 44 | 30 | 30 | 44 | - | 16 | - | - | 770 | 76 | 16 | 70 | - | - | 842 | 850 | 12 |
900 | 1075 | 1020 | 30 | 24 | M27 | 914 | - | 926 | 48 | 30 | 30 | 48 | - | 16 | - | - | 860 | 74 | 16 | 70 | - | - | 942 | 950 | 12 |
1000 | 1175 | 1120 | 30 | 28 | M27 | 1016 | - | 1028 | 52 | 30 | 30 | 52 | - | 18 | - | - | 960 | 74 | 16 | 70 | - | - | 1045 | 1050 | 16 |
1200 | 1375 | 1320 | 30 | 32 | M27 | 1219 | - | 1234 | 60 | 32 | 32 | 50 | - | 20 | - | - | 1160 | 94 | 16 | 90 | - | - | 1245 | - | 16 |
1400 | 1575 | 1520 | 30 | 36 | M27 | 1422 | - | - | - | 38 | 38 | - | - | - | - | - | - | 96 | 16 | - | - | - | 1445 | - | 16 |
1600 | 1790 | 1730 | 30 | 40 | M27 | 1626 | - | - | - | 46 | 46 | - | - | - | - | - | - | 102 | 20 | - | - | - | 1645 | - | 16 |
1800 | 1990 | 1930 | 30 | 44 | M27 | 1829 | - | - | - | 46 | 46 | - | - | - | - | - | - | 110 | 20 | - | - | - | 1845 | - | 16 |
2000 | 2190 | 2130 | 30 | 48 | M27 | 2032 | - | - | - | 50 | 50 | - | - | - | - | - | - | 122 | 22 | - | - | - | 2045 | - | 16 |
2200 | 2405 | 2340 | 33 | 52 | M30 | 2235 | - | - | - | 56 | 56 | - | - | - | - | - | - | 129 | 25 | - | - | - | 2248 | - | 18 |
2400 | 2605 | 2540 | 33 | 56 | M30 | 2438 | - | - | - | 62 | 62 | - | - | - | - | - | - | 143 | 25 | - | - | - | 2448 | - | 18 |
2600 | 2805 | 2740 | 33 | 60 | M30 | 2620 | - | - | - | 64 | 64 | - | - | - | - | - | - | 148 | 25 | - | - | - | 2648 | - | 18 |
2800 | 3030 | 2960 | 36 | 64 | M33 | 2820 | - | - | - | 74 | 74 | - | - | - | - | - | - | 161 | 25 | - | - | - | 2848 | - | 18 |
3000 | 3230 | 3160 | 36 | 68 | M33 | 3020 | - | - | - | 80 | 80 | - | - | - | - | - | - | 170 | 25 | - | - | - | 3050 | - | 18 |
3200 | 3430 | 3360 | 36 | 72 | M33 | 3220 | - | - | - | 84 | 84 | - | - | - | - | - | - | 180 | 25 | - | - | - | 3250 | - | 20 |
3400 | 3630 | 3560 | 36 | 76 | M33 | 3420 | - | - | - | 90 | 90 | - | - | - | - | - | - | 194 | 28 | - | - | - | 3450 | - | 20 |
3600 | 3840 | 3770 | 36 | 80 | M33 | 3620 | - | - | - | 96 | 96 | - | - | - | - | - | - | 201 | 28 | - | - | - | 3652 | - | 20 |
3800 | 4045 | 3970 | 39 | 80 | M36 | 3820 | - | - | - | 102 | 102 | - | - | - | - | - | - | 212 | 28 | - | - | - | 3852 | - | 20 |
4000 | 4245 | 4170 | 39 | 84 | M36 | 4020 | - | - | - | 106 | 106 | - | - | - | - | - | - | 226 | 28 | - | - | - | 4052 | - | 20 |