Ring Flange
AWWA C207-07 Class E Ring Flanges
SPECIFICATIONS
▪ All dimensions are in inches
▪ Pressure rating at atmospheric temperature is 275 psi
| Nominal Pipe Size |
Outside Diameter |
Thickness | Inside Diameter |
Approximate Weight | Number of Holes |
Diameter of Bolt Holes |
Diameter of Bolt Circle |
| (A) | (T) | (B) | (lbs) | (C) | |||
| 4 | 9.00 | 1.13 | 4.57 | 14 | 8 | 0.750 | 7.50 |
| 5 | 10.00 | 1.19 | 5.66 | 16 | 8 | 0.875 | 8.50 |
| 6 | 11.00 | 1.31 | 6.72 | 22 | 8 | 0.875 | 9.50 |
| 8 | 13.50 | 1.50 | 8.72 | 33 | 8 | 0.875 | 11.75 |
| 10 | 16.00 | 1.56 | 10.88 | 47 | 12 | 1.000 | 14.25 |
| 12 | 19.00 | 1.75 | 12.88 | 71 | 12 | 1.000 | 17.00 |
| 14 | 21.00 | 1.88 | 14.19 | 94 | 12 | 1.125 | 18.75 |
| 16 | 23.50 | 2.00 | 16.19 | 120 | 16 | 1.125 | 21.25 |
| 18 | 25.00 | 2.13 | 18.19 | 127 | 16 | 1.250 | 22.75 |
| 20 | 27.50 | 2.38 | 20.19 | 168 | 20 | 1.250 | 25.00 |
| 22 | 29.50 | 2.50 | 22.19 | 189 | 20 | 1.375 | 27.25 |
| 24 | 32.00 | 2.63 | 24.19 | 234 | 20 | 1.375 | 29.50 |
| 26 | 34.25 | 2.75 | 26.19 | 270 | 24 | 1.375 | 31.75 |
| 28 | 36.50 | 2.75 | 28.19 | 297 | 28 | 1.375 | 34.00 |
| 30 | 38.75 | 2.88 | 30.19 | 344 | 28 | 1.375 | 36.00 |
| 32 | 41.75 | 3.00 | 32.19 | 422 | 28 | 1.625 | 38.50 |
| 34 | 43.75 | 3.00 | 34.19 | 460 | 32 | 1.625 | 40.50 |
| 36 | 46.00 | 3.13 | 36.19 | 502 | 32 | 1.625 | 42.75 |
| 38 | 48.75 | 3.13 | 38.19 | 580 | 32 | 1.625 | 45.25 |
| 40 | 50.75 | 3.25 | 40.19 | 626 | 36 | 1.625 | 47.25 |
| 42 | 53.00 | 3.38 | 42.19 | 701 | 36 | 1.625 | 49.50 |
| 44 | 55.25 | 3.38 | 44.19 | 747 | 40 | 1.625 | 51.75 |
| 46 | 57.25 | 3.44 | 46.19 | 794 | 40 | 1.625 | 53.75 |
| 48 | 59.50 | 3.50 | 48.19 | 858 | 44 | 1.625 | 56.00 |
| 50 | 61.75 | 3.50 | 50.19 | 887 | 44 | 1.875 | 58.25 |
| 52 | 64.00 | 3.63 | 52.19 | 982 | 44 | 1.875 | 60.50 |
| 54 | 66.25 | 3.75 | 54.19 | 1083 | 44 | 1.875 | 62.75 |
| 60 | 73.00 | 3.88 | 60.19 | 1313 | 52 | 1.875 | 69.25 |
| 66 | 80.00 | 4.25 | 66.19 | 1736 | 52 | 1.875 | 76.00 |
| 72 | 86.50 | 4.38 | 72.19 | 2005 | 60 | 1.875 | 82.50 |
| 78 | 93.00 | 4.75 | 78.19 | 2374 | 64 | 2.125 | 89.00 |
| 84 | 99.75 | 4.75 | 84.19 | 2719 | 64 | 2.125 | 95.50 |
| 90 | 106.50 | 5.13 | 90.19 | 3197 | 68 | 2.438 | 102.00 |
| 96 | 113.25 | 5.13 | 96.19 | 3614 | 68 | 2.438 | 108.50 |
| 102 | 120.00 | 5.50 | 102.19 | 4206 | 72 | 2.688 | 114.50 |
| 108 | 126.75 | 5.50 | 108.19 | 4700 | 72 | 2.688 | 120.75 |
| 114 | 133.50 | 5.88 | 114.19 | 5395 | 76 | 2.938 | 126.75 |
| 120 | 140.25 | 5.88 | 120.19 | 5972 | 76 | 2.938 | 132.75 |
| 126 | 147.00 | 6.25 | 126.19 | 6776 | 80 | 3.188 | 139.25 |
| 132 | 153.75 | 6.25 | 132.19 | 7443 | 80 | 3.188 | 145.75 |
| 138 | 160.50 | 6.75 | 138.19 | 8517 | 84 | 3.438 | 152.00 |
| 144 | 167.25 | 6.75 | 144.19 | 9295 | 84 | 3.438 | 158.25 |