Hub Flange
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AWWA C207-94 Class B Hub Flanges
SPECIFICATIONS


▪ All dimensions are in inches
▪ Pressure rating at atmospheric temperature is 175 psi
for sizes 12” and under and 150 psi for sizes 14” and up
for sizes 12” and under and 150 psi for sizes 14” and up
Nominal Pipe Size |
Outside Diameter |
Thickness | Overall Thickness |
Hub Diameter |
Inside Diameter |
Approximate Weight |
Number of Holes |
Diameter of Bolt Holes |
Diameter of Bolt Circle |
(A) | (T) | (L) | (E) | (B) | (lbs) | (C) | |||
4 | 9.00 | 0.50 | 0.88 | 5.31 | 4.57 | 7 | 8 | 0.750 | 7.50 |
5 | 10.00 | 0.56 | 1.25 | 6.31 | 5.66 | 8 | 8 | 0.875 | 8.50 |
6 | 11.00 | 0.56 | 1.25 | 7.56 | 6.72 | 13 | 8 | 0.875 | 9.50 |
8 | 13.50 | 0.56 | 1.25 | 9.69 | 8.72 | 18 | 8 | 0.875 | 11.75 |
10 | 16.00 | 0.69 | 1.25 | 12.00 | 10.88 | 26 | 12 | 1.000 | 14.25 |
12 | 19.00 | 0.69 | 1.25 | 14.38 | 12.88 | 42 | 12 | 1.000 | 17.00 |
14 | 21.00 | 0.75 | 1.25 | 15.75 | 14.19 | 44 | 12 | 1.125 | 18.75 |
16 | 23.50 | 0.75 | 1.25 | 18.00 | 16.19 | 58 | 16 | 1.125 | 21.25 |
18 | 25.00 | 0.75 | 1.25 | 19.88 | 18.19 | 59 | 16 | 1.250 | 22.75 |
20 | 27.50 | 0.75 | 1.25 | 22.00 | 20.19 | 69 | 20 | 1.250 | 25.00 |
22 | 29.50 | 1.00 | 1.75 | 24.25 | 22.19 | 76 | 20 | 1.375 | 27.25 |
24 | 32.00 | 1.00 | 1.75 | 26.13 | 24.19 | 115 | 20 | 1.375 | 29.50 |
26 | 34.25 | 1.00 | 1.75 | 28.50 | 26.19 | 125 | 24 | 1.375 | 31.75 |
28 | 36.50 | 1.00 | 1.75 | 30.50 | 28.19 | 140 | 28 | 1.375 | 34.00 |
30 | 38.75 | 1.00 | 1.75 | 32.50 | 30.19 | 150 | 28 | 1.375 | 36.00 |
32 | 41.75 | 1.13 | 1.75 | 34.75 | 32.19 | 205 | 28 | 1.625 | 38.50 |
34 | 43.75 | 1.13 | 1.75 | 36.75 | 34.19 | 215 | 32 | 1.625 | 40.50 |
36 | 46.00 | 1.13 | 1.75 | 38.75 | 36.19 | 235 | 32 | 1.625 | 42.75 |
38 | 48.75 | 1.13 | 1.75 | 40.75 | 38.19 | 265 | 32 | 1.625 | 45.25 |
40 | 50.75 | 1.13 | 1.75 | 43.00 | 40.19 | 280 | 36 | 1.625 | 47.25 |
42 | 53.00 | 1.25 | 1.75 | 45.00 | 42.19 | 330 | 36 | 1.625 | 49.50 |
44 | 55.25 | 1.25 | 2.25 | 47.00 | 44.19 | 350 | 40 | 1.625 | 51.75 |
46 | 57.25 | 1.25 | 2.25 | 49.00 | 46.19 | 365 | 40 | 1.625 | 53.75 |
48 | 59.50 | 1.38 | 2.50 | 51.00 | 48.19 | 425 | 44 | 1.625 | 56.00 |
50 | 61.75 | 1.38 | 2.50 | 53.00 | 50.19 | 450 | 44 | 1.875 | 58.25 |
52 | 64.00 | 1.38 | 2.50 | 55.00 | 52.19 | 475 | 44 | 1.875 | 60.50 |
54 | 66.25 | 1.38 | 2.50 | 57.00 | 54.19 | 500 | 44 | 1.875 | 62.75 |
60 | 73.00 | 1.50 | 2.75 | 63.00 | 60.19 | 640 | 52 | 1.875 | 69.25 |
66 | 80.00 | 1.50 | 2.75 | 69.00 | 66.19 | 750 | 52 | 1.875 | 76.00 |
72 | 86.50 | 1.50 | 2.75 | 75.00 | 72.19 | 850 | 60 | 1.875 | 82.50 |
78 | 93.00 | 1.75 | 3.00 | 81.25 | 78.19 | 1200 | 64 | 2.125 | 89.00 |
84 | 99.75 | 1.75 | 3.00 | 87.50 | 84.19 | 1250 | 64 | 2.125 | 95.50 |
90 | 106.50 | 2.00 | 3.25 | 93.75 | 90.19 | 1650 | 68 | 2.438 | 102.00 |
96 | 113.25 | 2.00 | 3.25 | 100.00 | 96.19 | 1750 | 68 | 2.438 | 108.50 |