Table 7 AWWA C207-18 Class F Blind Flanges
| Nominal Pipe Size | Working Pressure | Outside Diameter (O) | Minimum Thickness (T) | Approximate Weight | Number of Bolt Holes | Diameter of Bolt Holes | Diameter of Bolt Circle (C) |
|---|---|---|---|---|---|---|---|
| 4 | 300 psi | 10.00 mm | 1.13 mm | 28 lb | 8 | 0.88 mm | 7.88 mm |
| 5 | 300 psi | 11.00 mm | 1.21 mm | 36 lb | 8 | 0.88 mm | 9.25 mm |
| 6 | 300 psi | 12.50 mm | 1.31 mm | 50 lb | 12 | 0.88 mm | 10.62 mm |
| 8 | 300 psi | 15.00 mm | 1.31 mm | 72 lb | 12 | 1.00 mm | 13.00 mm |
| 10 | 300 psi | 17.50 mm | 1.50 mm | 111 lb | 16 | 1.13 mm | 15.25 mm |
| 12 | 300 psi | 20.50 mm | 1.63 mm | 164 lb | 16 | 1.25 mm | 17.75 mm |
| 14 | 300 psi | 23.00 mm | 1.94 mm | 243 lb | 20 | 1.25 mm | 20.25 mm |
| 16 | 300 psi | 25.50 mm | 2.14 mm | 328 lb | 20 | 1.38 mm | 22.50 mm |
| 18 | 300 psi | 28.00 mm | 2.25 mm | 414 lb | 24 | 1.38 mm | 24.75 mm |
| 20 | 300 psi | 30.50 mm | 2.33 mm | 521 lb | 24 | 1.38 mm | 27.00 mm |
| 22 | 300 psi | 33.00 mm | 2.50 mm | 651 lb | 24 | 1.38 mm | 29.25 mm |
| 24 | 300 psi | 36.00 mm | 2.69 mm | 830 lb | 24 | 1.63 mm | 32.00 mm |
| 26 | 300 psi | 38.25 mm | 3.00 mm | 1038 lb | 28 | 1.88 mm | 34.50 mm |
| 28 | 300 psi | 40.75 mm | 3.13 mm | 1226 lb | 28 | 1.88 mm | 37.00 mm |
| 30 | 300 psi | 43.00 mm | 3.17 mm | 1380 lb | 28 | 1.88 mm | 39.25 mm |
| 32 | 300 psi | 45.25 mm | 3.33 mm | 1603 lb | 28 | 1.88 mm | 41.50 mm |
| 34 | 300 psi | 47.50 mm | 3.48 mm | 1839 lb | 28 | 1.88 mm | 43.50 mm |
| 36 | 300 psi | 50.00 mm | 3.67 mm | 2146 lb | 32 | 2.13 mm | 46.00 mm |
| 38 | 300 psi | 52.25 mm | 3.82 mm | 2431 lb | 32 | 2.13 mm | 48.00 mm |
| 40 | 300 psi | 54.25 mm | 3.98 mm | 2730 lb | 36 | 2.13 mm | 50.25 mm |
| 42 | 300 psi | 57.00 mm | 4.17 mm | 3151 lb | 36 | 2.13 mm | 52.75 mm |
| 44 | 300 psi | 59.25 mm | 4.34 mm | 3535 lb | 36 | 2.13 mm | 55.00 mm |
| 46 | 300 psi | 61.50 mm | 4.51 mm | 3949 lb | 40 | 2.13 mm | 57.25 mm |
| 48 | 300 psi | 65.00 mm | 4.78 mm | 4671 lb | 40 | 2.13 mm | 60.75 mm |