(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 | 3.75 | 2.62 | 1.38 | 4 | 0.63 | 0.56 | 2 |
| 3/4 | 4.62 | 3.25 | 1.69 | 4 | 0.75 | 0.62 | 3 |
| 1 | 4.88 | 3.50 | 2.00 | 4 | 0.75 | 0.69 | 4 |
| 1 1/4 | 5.25 | 3.88 | 2.50 | 4 | 0.75 | 0.81 | 5 |
| 1 1/2 | 6.12 | 4.50 | 2.88 | 4 | 0.88 | 0.88 | 8 |
| 2 | 6.50 | 5.00 | 3.62 | 8 | 0.75 | 1.00 | 10 |
| 2 1/2 | 7.50 | 5.88 | 4.12 | 8 | 0.88 | 1.12 | 15 |
| 3 | 8.25 | 6.62 | 5.00 | 8 | 0.88 | 1.25 | 20 |
| 3 1/2 | 9.00 | 7.25 | 5.50 | 8 | 1.00 | 1.38 | 29 |
| 4 | 10.75 | 8.50 | 6.19 | 8 | 1.00 | 1.50 | 41 |
| 5 | 13.00 | 10.50 | 7.31 | 8 | 1.13 | 1.75 | 68 |
| 6 | 14.00 | 11.50 | 8.50 | 12 | 1.13 | 1.88 | 86 |
| 8 | 16.50 | 13.75 | 10.62 | 12 | 1.25 | 2.19 | 140 |
| 10 | 20.00 | 17.00 | 12.75 | 16 | 1.38 | 2.50 | 230 |
| 12 | 22.00 | 19.25 | 15.00 | 20 | 1.38 | 2.62 | 295 |
| 14 | 23.75 | 20.75 | 16.25 | 20 | 1.50 | 2.75 | 355 |
| 16 | 27.00 | 23.75 | 18.50 | 20 | 1.63 | 3.00 | 495 |
| 18 | 29.25 | 25.75 | 21.00 | 20 | 1.75 | 3.25 | 630 |
| 20 | 32.00 | 28.50 | 23.00 | 24 | 1.75 | 3.50 | 810 |
| 22 | 34.25 | 30.62 | 25.25 | 24 | 1.88 | 3.75 | 1000 |
| 24 | 37.00 | 33.00 | 27.25 | 24 | 2.00 | 4.00 | 1250 |