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Flanged end connection as EN 1092-2 PN 10 / PN 16 / PN 25

EN 1092-2 is to rule circular flanges made from ductile, grey and malleable cast iron. Fire fighting valve under British standard is made from ductile iron, so British valve flange is designed and produced totally according to EN1092-2 standard.
PN 10 / PN 16 / PN 25 level is more often required during connection. The higer level, the bigger and thicker of the flange will be.

Available size of PN 10 / PN 16

Size Flange dimension (mm) Bolting
D C (Ths) T (RF) D1 (PCD) D. of bolt hole Bolt no. Bolt size
2" / DN50 / 60.3mm 165 19.0 3.0 125 19 4 M16
2-1/2" / DN65 / 76.1mm 185 19.0 3.0 145 19 4 (8) * M16
3" / DN80 / 88.9mm 200 19.0 3.0 160 19 8 M16
4" / DN100 / 114.3mm 220 19.0 3.0 180 19 8 M16
5" / DN125 / 139.7mm 250 19.0 3.0 210 19 8 M16
6" / DN150 / 165.1mm 285 19.0 3.0 240 23 8 M20
8" / DN200 / 219.1mm 340 20.0 3.0 295 23 8 / 12 M20
10" / DN250 / 273.0mm 400 22.0 3.0 350 / 355 23 / 28 12 M20 / M24
12" / DN300 / 323.9mm 455 24.5 4.0 400 / 410 23 / 28 12 M20 / M24
14" / DN350 / 355.6mm 505 / 520 24.5 / 26.5 4.0 460 / 470 23 / 28 16 M20 / M24
16" / DN400 / 406.4mm 565 / 580 24.5 / 28.0 4.0 515 / 525 28 / 31 16 M24 / M27
18" / DN450 / 457mm 615 / 640 25.5 / 30.0 4.0 565 / 585 28 / 31 20 M24 / M27
20" / DN500 / 508mm 670 / 715 26.5 / 31.5 4.0 620 / 650 28 / 34 20 M24 / M30
24" / DN600 / 610mm 780 / 840 30.0 / 36.0 5.0 725 / 770 31 /37 20 M27 / M33
Note:
1. * Size DN 65 can also be supplied with 8 holes, so to match EN 1092-1(Carbon steel flange) specification.
2. For flange facing, it is raised face, and thickness as above form.

Available size of PN 25

Size Flange dimension (mm) Bolting
D C (Ths) T (RF) D1 (PCD) D. of bolt hole Bolt no. Bolt size
2" / DN50 / 60.3mm 165 19.0 3.0 125 19 4 M16
2-1/2" / DN65 / 76.1mm 185 19.0 3.0 145 19 8 M16
3" / DN80 / 88.9mm 200 19.0 3.0 160 19 8 M16
4" / DN100 / 114.3mm 235 19.0 3.0 190 23 8 M20
5" / DN125 / 139.7mm 270 19.0 3.0 220 28 8 M24
6" / DN150 / 165.1mm 300 20.0 3.0 250 28 8 M24
8" / DN200 / 219.1mm 360 22.0 3.0 310 28 12 M24
10" / DN250 / 273.0mm 425 24.5 3.0 370 31 12 M27
12" / DN300 / 323.9mm 485 27.5 4.0 430 31 16 M27
14" / DN350 / 355.6mm 555 30.0 4.0 490 34 16 M30
16" / DN400 / 406.4mm 620 32.0 4.0 550 37 16 M33
18" / DN450 / 457mm 670 34.5 4.0 600 37 20 M33
20" / DN500 / 508mm 730 36.5 4.0 660 37 20 M33
24" / DN600 / 610mm 845 42.0 5.0 770 41 20 M36
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