Flanges› Dimensions› BS EN› BS EN 1092-1› Type 04 Loose Plate Flange
with Weld Neck
PN 16

BS EN 1092-1
Type 04 Loose Plate Flange
with Weld Neck

DIMENSIONAL DATA
DN Outside Diameter
(D)
Diameter of
Bolt Circle (K)
Diameter of
Bolt Hole (L)
Bolting
Number
Bolting
Size
Bore Diameters
(B3)
Flange
Thickness (C1)
Chamfer
(E)
10 90 60 14 4 M12 31 14 3
15 95 65 14 4 M12 35 14 3
20 105 75 14 4 M12 42 16 4
25 115 85 14 4 M12 49 16 4
32 140 100 18 4 M16 59 18 5
40 150 110 18 4 M16 67 18 5
50 165 125 18 4 M16 77 20 5
65 185 145 18 8ᵇ M16 96 20 6
80 200 160 18 8 M16 108 20 6
100 220 180 18 8 M16 134 22 6
125 250 210 18 8 M16 162 22 6
150 285 240 22 8 M20 188 24 6
200 340 295 22 12 M20 240 24 6
250 405 355 26 12 M24 294 26 8
300 460 410 26 12 M24 348 32 8
350 520 470 26 16 M24 400 35 8
400 580 525 30 16 M27 454 38 8
450 640 585 30 20 M27 500 42 8
500 715 650 33 20 M30 556 46 8
600 840 770 36 20 M33 660 55 8
700 910 840 36 24 M33 - 63 8
800 1 025 950 39 24 M36 - 74 8
900 1 125 1 050 39 28 M36 - 82 8
1000 1 255 1 170 42 28 M39 - 90 8
1200 1 485 1 390 48 32 M45 - c -
1400 1 685 1 590 48 36 M45 - c -
1600 1 930 1 820 56 40 M52 - c -
1800 2 130 2 020 56 44 M52 - c -
2000 2 345 2 230 62 48 M56 - c -
TABLE NOTE

a) For flanges type 21 the outside hub diameter approximately corresponds to the outside pipe diameter and the nominal value dimensions A, N3 and R1 and their tolerances are included for guidance only.

c) To be specified by the purchaser.

d) Use is limited up to DN 600.

b) According to EN 1092-2 (Cast iron flanges) and EN 1092-3 (Copper alloy flanges), the flanges in this DN and PN may be supplied with 4 holes. Where steel flanges are required with 4 holes, these may be supplied by agreement between flange manufacturer and purchaser.

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