(a)All dimensions are in inches.
(b)These flanges will be furnished with a 1/4″ raised face unless otherwise specified. For more alternate flange facings, please click here!
| Nominal Pipe Size | Outside Diameter (O) | Bolt Circle (W) | Raised Face Diameter (R) | Number of Holes | Diameter of Holes | Thickness (T) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|
| 1/2 | 4.75 | 3.25 | 1.38 | 4 | 0.88 | 0.88 | 4 |
| 3/4 | 5.12 | 3.50 | 1.69 | 4 | 0.88 | 1.00 | 6 |
| 1 | 5.88 | 4.00 | 2.00 | 4 | 1.00 | 1.12 | 8 |
| 1 1/4 | 6.25 | 4.38 | 2.50 | 4 | 1.00 | 1.12 | 9 |
| 1 1/2 | 7.00 | 4.88 | 2.88 | 4 | 1.13 | 1.25 | 13 |
| 2 | 8.50 | 6.50 | 3.62 | 8 | 1.00 | 1.50 | 25 |
| 2 1/2 | 9.62 | 7.50 | 4.12 | 8 | 1.13 | 1.62 | 35 |
| 3 | 10.50 | 8.00 | 5.00 | 8 | 1.25 | 1.88 | 48 |
| 4 | 12.25 | 9.50 | 6.19 | 8 | 1.38 | 2.12 | 73 |
| 5 | 14.75 | 11.50 | 7.31 | 8 | 1.63 | 2.88 | 140 |
| 6 | 15.50 | 12.50 | 8.50 | 12 | 1.50 | 3.25 | 160 |
| 8 | 19.00 | 15.50 | 10.62 | 12 | 1.75 | 3.62 | 300 |
| 10 | 23.00 | 19.00 | 12.75 | 12 | 2.00 | 4.25 | 510 |
| 12 | 26.50 | 22.50 | 15.00 | 16 | 2.13 | 4.88 | 690 |
| 14 | 29.50 | 25.00 | 16.25 | 16 | 2.38 | 5.25 | 975 |
| 16 | 32.50 | 27.75 | 18.50 | 16 | 2.63 | 5.75 | 1300 |
| 18 | 36.00 | 30.50 | 21.00 | 16 | 2.88 | 6.38 | 1750 |
| 20 | 38.75 | 32.75 | 23.00 | 16 | 3.13 | 7.00 | 2225 |
| 24 | 46.00 | 39.00 | 27.25 | 16 | 3.63 | 8.00 | 3625 |