Table 7 AWWA C207-18 Class E Blind Flanges
| Nominal Pipe Size | Working Pressure | Outside Diameter (A) | Minimum Thickness (T) | Approximate Weight | Number of Bolt Holes | Diameter of Bolt Holes | Diameter of Bolt Circle (C) |
|---|---|---|---|---|---|---|---|
| 4 | 275 psi | 9.00 mm | 1.13 mm | 23 lb | 8 | 0.75 mm | 7.50 mm |
| 5 | 275 psi | 10.00 mm | 1.19 mm | 29 lb | 8 | 0.88 mm | 8.50 mm |
| 6 | 275 psi | 11.00 mm | 1.31 mm | 39 lb | 8 | 0.88 mm | 9.50 mm |
| 8 | 275 psi | 13.50 mm | 1.50 mm | 66 lb | 8 | 0.88 mm | 11.75 mm |
| 10 | 275 psi | 16.00 mm | 1.56 mm | 96 lb | 12 | 1.00 mm | 14.25 mm |
| 12 | 275 psi | 19.00 mm | 1.75 mm | 151 lb | 12 | 1.00 mm | 17.00 mm |
| 14 | 275 psi | 21.00 mm | 1.88 mm | 196 lb | 12 | 1.13 mm | 18.75 mm |
| 16 | 275 psi | 23.50 mm | 2.00 mm | 261 lb | 16 | 1.13 mm | 21.25 mm |
| 18 | 275 psi | 25.00 mm | 2.13 mm | 313 lb | 16 | 1.25 mm | 22.75 mm |
| 20 | 275 psi | 27.50 mm | 2.38 mm | 431 lb | 20 | 1.25 mm | 25.00 mm |
| 22 | 275 psi | 29.50 mm | 2.50 mm | 520 lb | 20 | 1.38 mm | 27.25 mm |
| 24 | 275 psi | 32.00 mm | 2.63 mm | 641 lb | 20 | 1.38 mm | 29.50 mm |
| 26 | 275 psi | 34.25 mm | 2.75 mm | 767 lb | 24 | 1.38 mm | 31.75 mm |
| 28 | 275 psi | 36.50 mm | 2.75 mm | 871 lb | 28 | 1.38 mm | 34.00 mm |
| 30 | 275 psi | 38.75 mm | 2.88 mm | 1023 lb | 28 | 1.38 mm | 36.00 mm |
| 32 | 275 psi | 41.75 mm | 3.00 mm | 1236 lb | 28 | 1.63 mm | 38.50 mm |
| 34 | 275 psi | 43.75 mm | 3.05 mm | 1379 lb | 32 | 1.63 mm | 40.50 mm |
| 36 | 275 psi | 46.00 mm | 3.21 mm | 1599 lb | 32 | 1.63 mm | 42.75 mm |
| 38 | 275 psi | 48.75 mm | 3.39 mm | 1894 lb | 32 | 1.63 mm | 45.25 mm |
| 40 | 275 psi | 50.75 mm | 3.53 mm | 2132 lb | 36 | 1.63 mm | 47.25 mm |
| 42 | 275 psi | 53.00 mm | 3.70 mm | 2427 lb | 36 | 1.63 mm | 49.50 mm |
| 44 | 275 psi | 55.25 mm | 3.86 mm | 2747 lb | 40 | 1.63 mm | 51.75 mm |
| 46 | 275 psi | 57.25 mm | 4.00 mm | 3052 lb | 40 | 1.63 mm | 53.75 mm |
| 48 | 275 psi | 59.50 mm | 4.16 mm | 3424 lb | 44 | 1.63 mm | 56.00 mm |
| 50 | 275 psi | 61.75 mm | 4.33 mm | 3830 lb | 44 | 1.88 mm | 58.25 mm |
| 52 | 275 psi | 64.00 mm | 4.49 mm | 4262 lb | 44 | 1.88 mm | 60.50 mm |
| 54 | 275 psi | 66.25 mm | 4.65 mm | 4725 lb | 44 | 1.88 mm | 62.75 mm |
| 60 | 275 psi | 73.00 mm | 5.12 mm | 6288 lb | 52 | 1.88 mm | 69.25 mm |
| 66 | 275 psi | 80.00 mm | 5.60 mm | 8243 lb | 52 | 1.88 mm | 76.00 mm |
| 72 | 275 psi | 86.50 mm | 6.07 mm | 10411 lb | 60 | 1.88 mm | 82.50 mm |