Table 7 AWWA C207-18 Class D 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 | 175 psi | 9.00 mm | 0.63 mm | 11 lb | 8 | 0.75 mm | 7.50 mm |
| 5 | 175 psi | 10.00 mm | 0.65 mm | 14 lb | 8 | 0.88 mm | 8.50 mm |
| 6 | 175 psi | 11.00 mm | 0.69 mm | 18 lb | 8 | 0.88 mm | 9.50 mm |
| 8 | 175 psi | 13.50 mm | 0.81 mm | 32 lb | 8 | 0.88 mm | 11.75 mm |
| 10 | 175 psi | 16.00 mm | 0.95 mm | 52 lb | 12 | 1.00 mm | 14.25 mm |
| 12 | 175 psi | 19.00 mm | 1.12 mm | 87 lb | 12 | 1.00 mm | 17.00 mm |
| 14 | 175 psi | 21.00 mm | 1.13 mm | 108 lb | 12 | 1.13 mm | 18.75 mm |
| 16 | 175 psi | 23.50 mm | 1.27 mm | 150 lb | 16 | 1.13 mm | 21.25 mm |
| 18 | 175 psi | 25.00 mm | 1.33 mm | 178 lb | 16 | 1.25 mm | 22.75 mm |
| 20 | 175 psi | 27.50 mm | 1.45 mm | 234 lb | 20 | 1.25 mm | 25.00 mm |
| 22 | 175 psi | 29.50 mm | 1.57 mm | 291 lb | 20 | 1.38 mm | 27.25 mm |
| 24 | 175 psi | 32.00 mm | 1.66 mm | 365 lb | 20 | 1.38 mm | 29.50 mm |
| 26 | 175 psi | 34.25 mm | 1.79 mm | 450 lb | 24 | 1.38 mm | 31.75 mm |
| 28 | 175 psi | 36.50 mm | 1.91 mm | 545 lb | 28 | 1.38 mm | 34.00 mm |
| 30 | 175 psi | 38.75 mm | 2.01 mm | 650 lb | 28 | 1.38 mm | 36.00 mm |
| 32 | 175 psi | 41.75 mm | 2.15 mm | 800 lb | 28 | 1.63 mm | 38.50 mm |
| 34 | 175 psi | 43.75 mm | 2.25 mm | 917 lb | 32 | 1.63 mm | 40.50 mm |
| 36 | 175 psi | 46.00 mm | 2.37 mm | 1071 lb | 32 | 1.63 mm | 42.75 mm |
| 38 | 175 psi | 48.75 mm | 2.51 mm | 1278 lb | 32 | 1.63 mm | 45.25 mm |
| 40 | 175 psi | 50.75 mm | 2.61 mm | 1440 lb | 36 | 1.63 mm | 47.25 mm |
| 42 | 175 psi | 53.00 mm | 2.73 mm | 1650 lb | 36 | 1.63 mm | 49.50 mm |
| 44 | 175 psi | 55.25 mm | 2.85 mm | 1868 lb | 40 | 1.63 mm | 51.75 mm |
| 46 | 175 psi | 57.25 mm | 2.95 mm | 2085 lb | 40 | 1.63 mm | 53.75 mm |
| 48 | 175 psi | 59.50 mm | 3.07 mm | 2345 lb | 44 | 1.63 mm | 56.00 mm |
| 50 | 175 psi | 61.75 mm | 3.20 mm | 2871 lb | 44 | 1.88 mm | 58.25 mm |
| 52 | 175 psi | 64.00 mm | 3.32 mm | 3192 lb | 44 | 1.88 mm | 60.50 mm |
| 54 | 175 psi | 66.25 mm | 3.44 mm | 3240 lb | 44 | 1.88 mm | 62.75 mm |
| 60 | 175 psi | 73.00 mm | 3.78 mm | 4330 lb | 52 | 1.88 mm | 69.25 mm |
| 66 | 175 psi | 80.00 mm | 4.14 mm | 5725 lb | 52 | 1.88 mm | 76.00 mm |
| 72 | 175 psi | 86.50 mm | 4.48 mm | 7250 lb | 60 | 1.88 mm | 82.50 mm |