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Dimensions of PN 2.5 flanges

This diagram illustrates the arrangement but not necessarily the correct number of bolt holes K D L
This diagram illustrates the arrangement but not necessarily the correct number of bolt holes
Flange type 01 C 1 B 1
Flange type 01
Flange type 05 C 4 G max
Flange type 05
Flange type 11 H 2 A N 1 S C 2 H 3 R 1
Flange type 11
Flange type 02 and 35 C 1 A S d 1 H 4 F 2
Flange type 02 and 35
Flange type 02 and 36 C 1 A S d 1 H 6 F 3
Flange type 02 and 36
Flange type 02 and 37 C 1 A S d 1 H 5 F 4
Flange type 02 and 37
Flange type 21 N 3 C 3 A C 3 N 3 R 1 R 1
Flange type 21

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
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