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AWWA C207-13 Class D & E STEEL HUB FLANGES

AWWA C207 STEEL HUB FLANGES

Note: AWWA dropped hub flanges from the C207 sttandard in 2013. These dimensions are being provided for industry reference.

AWWA C207-13 Class D & E STEEL HUB FLANGES
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(size 48.8Kb)
Nominal
size
Outside
Diameter
(OD)
Slip-on
Bore
(ID)
No. of
Bolt
Holes
Diameter
Of
Holes
Bolt
Circle
(BC)
Flange Dimensions
Class D
Flange Dimensions
Class E
T L E T L E
4 9.00 4.57 8 0.750 7.50 0.500 0.875 5.312 0.938 1.312 5.312
5 10.00 5.66 8 0.875 8.50 0.562 1.250 6.312 0.938 1.438 6.438
6 11.00 6.72 8 0.875 9.50 0.562 1.250 7.562 1.000 1.562 7.562
8 13.50 8.72 8 0.875 11.75 0.562 1.250 9.688 1.125 1.750 9.688
10 16.00 10.88 12 1.000 14.25 0.688 1.250 12.000 1.188 1.938 12.000
12 19.00 12.88 12 1.000 17.00 0.688 1.250 14.375 1.250 2.188 14.375
14 21.00 14.19 12 1.125 18.75 0.750 1.250 15.750 1.375 2.250 15.750
16 23.50 16.19 16 1.125 21.25 0.750 1.250 18.000 1.438 2.500 18.000
18 25.00 18.19 16 1.250 22.75 0.750 1.250 19.875 1.562 2.688 19.875
20 27.50 20.19 20 1.250 25.00 0.750 1.250 22.000 1.688 2.875 22.000
22 29.50 22.19 20 1.375 27.25 1.000 1.750 24.250 1.812 3.125 24.000
24 32.00 24.19 20 1.375 29.50 1.000 1.750 26.125 1.875 3.250 26.125
26 34.25 26.25 24 1.375 31.75 1.000 1.750 28.500 2.000 3.375 28.500
28 36.50 28.25 28 1.375 34.00 1.000 1.750 30.500 2.062 3.438 30.750
30 38.75 30.25 28 1.375 36.00 1.000 1.750 32.500 2.125 3.500 32.750
32 41.75 32.25 28 1.625 38.50 1.125 1.750 34.750 2.250 3.625 35.000
34 43.75 34.25 32 1.625 40.50 1.125 1.750 36.750 2.312 3.688 37.000
36 46.00 36.25 32 1.625 42.75 1.125 1.750 38.750 2.375 3.750 39.250
38 48.75 38.25 32 1.625 45.25 1.125 1.750 40.750 2.375 3.750 41.750
40 50.75 40.25 36 1.625 47.25 1.125 1.750 43.000 2.500 3.875 43.750
42 53.00 42.25 36 1.625 49.50 1.250 1.750 45.000 2.625 4.000 46.000
44 55.25 44.25 40 1.625 51.75 1.250 2.250 47.000 2.625 4.000 48.000
46 57.25 46.25 40 1.625 53.75 1.250 2.250 49.000 2.688 4.062 50.000
48 59.50 48.25 44 1.625 56.00 1.375 2.500 51.000 2.750 4.125 52.250
50 61.75 50.25 44 1.875 58.25 1.375 2.500 53.000 2.750 4.125 54.250
52 64.00 52.25 44 1.875 60.50 1.375 2.500 55.000 2.875 4.250 56.500
54 66.25 54.25 44 1.875 62.75 1.375 2.500 57.000 3.000 4.375 58.750
60 73.00 60.25 52 1.875 69.25 1.500 2.750 63.000 3.125 4.500 65.250
66 80.00 66.25 52 1.875 76.00 1.500 2.750 69.000 3.375 4.875 71.500
72 86.50 72.25 60 1.875 82.50 1.500 2.750 75.000 3.500 5.000 78.500
78 93.00 78.25 64 2.125 89.00 1.750 3.000 81.250 3.875 5.375 84.500
84 99.75 84.25 64 2.125 95.50 1.750 3.000 87.500 3.875 5.375 90.500
90 106.50 90.25 68 2.375 102.00 2.000 3.250 93.750 4.250 5.750 96.750
96 113.25 96.25 68 2.375 108.50 2.000 3.250 100.000 4.250 5.750 102.750

Overboring of Flanges: Hub flanges are intended to be used on pipes having an OD equal to the nominal pipe size as shown in the first column of this table. Ring flanges (Class B, D, E, and F) may be overbored or counterbored to accommodate pipes having larger OD's.

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