AWWA C207-18 Class B Ring and Blind Flange Add Flanges
| Nominal Size |
Outside Diameter (OD) |
Slip-on Bore (ID) |
No. of Bolt Holes | Diameter of Holes |
Bolt Circle (BC) |
Thickness - Slip-on (T) |
Thickness - Blind (T) |
Weight Each - Slip-on (lbs) |
Weight Each - Blind (lbs) |
|---|---|---|---|---|---|---|---|---|---|
| 4 | 9.00 | 4.57 | 8 | 0.750 | 7.50 | 0.625 | 0.625 | 7.7 | 10.6 |
| 5 | 10.00 | 5.66 | 8 | 0.875 | 8.50 | 0.625 | 0.625 | 8.6 | 13.1 |
| 6 | 11.00 | 6.72 | 8 | 0.875 | 9.50 | 0.688 | 0.688 | 10.7 | 17.6 |
| 8 | 13.50 | 8.72 | 8 | 0.875 | 11.75 | 0.688 | 0.688 | 15.3 | 27.0 |
| 10 | 16.00 | 10.88 | 12 | 1.000 | 14.25 | 0.688 | 0.688 | 19.2 | 37.4 |
| 12 | 19.00 | 12.88 | 12 | 1.000 | 17.00 | 0.688 | 0.719 | 28.1 | 55.8 |
| 14 | 21.00 | 14.19 | 12 | 1.125 | 18.75 | 0.688 | 0.791 | 34.4 | 75.0 |
| 16 | 23.50 | 16.19 | 16 | 1.125 | 21.25 | 0.688 | 0.892 | 41.3 | 105.6 |
| 18 | 25.00 | 18.19 | 16 | 1.250 | 22.75 | 0.688 | 0.950 | 41.2 | 126.8 |
| 20 | 27.50 | 20.19 | 20 | 1.250 | 25.00 | 0.688 | 1.040 | 48.6 | 167.8 |
| 22 | 29.50 | 22.19 | 20 | 1.375 | 27.25 | 0.750 | 1.132 | 56.8 | 209.7 |
| 24 | 32.00 | 24.19 | 20 | 1.375 | 29.50 | 0.750 | 1.216 | 67.0 | 266.9 |
| 26 | 34.25 | 26.19 | 24 | 1.375 | 31.75 | 0.812 | 1.307 | 79.3 | 328.0 |
| 28 | 36.50 | 28.19 | 28 | 1.375 | 34.00 | 0.875 | 1.398 | 93.7 | 398.0 |
| 30 | 38.75 | 30.19 | 28 | 1.375 | 36.00 | 0.875 | 1.477 | 103.9 | 476.1 |
| 32 | 41.75 | 32.19 | 28 | 1.625 | 38.50 | 0.938 | 1.581 | 131.3 | 587.2 |
| 34 | 43.75 | 34.19 | 32 | 1.625 | 40.50 | 0.938 | 1.661 | 137.0 | 676.2 |
| 36 | 46.00 | 36.19 | 32 | 1.625 | 42.75 | 1.000 | 1.751 | 159.7 | 791.6 |
| 38 | 48.75 | 38.19 | 32 | 1.625 | 45.25 | 1.000 | 1.853 | 184.5 | 945.1 |
| 40 | 50.75 | 40.19 | 36 | 1.625 | 47.25 | 1.000 | 1.933 | 191.5 | 1067.0 |
| 42 | 53.00 | 42.19 | 36 | 1.625 | 49.50 | 1.125 | 2.023 | 232.5 | 1221.8 |
| 44 | 55.25 | 44.19 | 40 | 1.625 | 51.75 | 1.125 | 2.114 | 247.6 | 1386.3 |
| 46 | 57.25 | 46.19 | 40 | 1.625 | 53.75 | 1.125 | 2.194 | 258.6 | 1548.6 |
| 48 | 59.50 | 48.19 | 44 | 1.625 | 56.00 | 1.250 | 2.285 | 304.9 | 1741.1 |
| 50 | 61.75 | 50.19 | 44 | 1.875 | 58.25 | 1.250 | 2.377 | 315.2 | 1935.1 |
| 52 | 64.00 | 52.19 | 44 | 1.875 | 60.50 | 1.250 | 2.468 | 336.9 | 2164.6 |
| 54 | 66.25 | 54.19 | 44 | 1.875 | 62.75 | 1.375 | 2.559 | 395.1 | 2411.3 |
| 60 | 73.00 | 60.19 | 52 | 1.875 | 69.25 | 1.500 | 2.820 | 506.1 | 3229.4 |
| 66 | 80.00 | 66.19 | 52 | 1.875 | 76.00 | 1.625 | 3.092 | 661.1 | 4277.8 |
| 72 | 86.50 | 72.19 | 60 | 1.875 | 82.50 | 1.750 | 3.353 | 798.8 | 5425.4 |
| 78 | 93.00 | 78.19 | 64 | 2.125 | 89.00 | 2.000 | NA | 995.6 | - |
| 84 | 99.75 | 84.19 | 64 | 2.125 | 95.50 | 2.000 | NA | 1140.7 | - |
| 90 | 106.50 | 90.19 | 68 | 2.375 | 102.00 | 2.250 | NA | 1408.8 | - |
| 96 | 113.25 | 96.19 | 68 | 2.440 | 108.50 | 2.250 | NA | 1591.2 | - |
| 102 | 120.00 | 102.19 | 72 | 2.625 | 114.50 | 2.500 | NA | 1918.7 | - |
| 108 | 126.75 | 108.19 | 72 | 2.625 | 120.75 | 2.500 | NA | 2142.6 | - |
| 114 | 133.50 | 114.19 | 76 | 2.875 | 126.75 | 2.750 | NA | 2534.1 | - |
| 120 | 140.25 | 120.19 | 76 | 2.875 | 132.75 | 2.750 | NA | 2803.9 | - |
| 126 | 147.00 | 126.19 | 80 | 3.125 | 139.25 | 3.000 | NA | 3263.6 | - |
| 132 | 153.75 | 132.19 | 80 | 3.125 | 145.75 | 3.000 | NA | 3583.5 | - |
| 144 | 167.25 | 144.19 | 84 | 3.375 | 158.25 | 3.250 | NA | 4489.5 | - |
Notes
Dimensions are in inches
86 PSI Pressure Rating for Water Service