Blind Flange
ASME/ANSI B16.5 Class 150 Blind Flanges
SPECIFICATIONS
▪ All dimensions are in inches
▪ These flanges will be furnished with a 1/16" raised face unless otherwise specified
▪ Flat face option available
| Nominal Pipe Size |
Outside Diameter | Thickness | Raised Face Diameter | Approximate Weight | Bolt Circle | Number of Holes |
Diameter of Holes |
| (O) | (T) | (R) | (lbs) | (C) | |||
| 1/2 | 3.50 | 0.44 | 1.38 | 1 | 2.38 | 4 | 0.63 |
| 3/4 | 3.88 | 0.50 | 1.69 | 2 | 2.75 | 4 | 0.63 |
| 1 | 4.25 | 0.56 | 2.00 | 2 | 3.13 | 4 | 0.63 |
| 1 1/4 | 4.63 | 0.63 | 2.50 | 3 | 3.50 | 4 | 0.63 |
| 1 1/2 | 5.00 | 0.69 | 2.88 | 4 | 3.88 | 4 | 0.63 |
| 2 | 6.00 | 0.75 | 3.63 | 5 | 4.75 | 4 | 0.75 |
| 2 1/2 | 7.00 | 0.88 | 4.13 | 7 | 5.50 | 4 | 0.75 |
| 3 | 7.50 | 0.94 | 5.00 | 9 | 6.00 | 4 | 0.75 |
| 3 1/2 | 8.50 | 0.94 | 5.50 | 13 | 7.00 | 8 | 0.75 |
| 4 | 9.00 | 0.94 | 6.19 | 17 | 7.50 | 8 | 0.75 |
| 5 | 10.00 | 0.94 | 7.31 | 20 | 8.50 | 8 | 0.88 |
| 6 | 11.00 | 1.00 | 8.50 | 26 | 9.50 | 8 | 0.88 |
| 8 | 13.50 | 1.13 | 10.63 | 45 | 11.75 | 8 | 0.88 |
| 10 | 16.00 | 1.19 | 12.75 | 70 | 14.25 | 12 | 1.00 |
| 12 | 19.00 | 1.25 | 15.00 | 110 | 17.00 | 12 | 1.00 |
| 14 | 21.00 | 1.38 | 16.25 | 140 | 18.75 | 12 | 1.13 |
| 16 | 23.50 | 1.44 | 18.50 | 180 | 21.25 | 16 | 1.13 |
| 18 | 25.00 | 1.56 | 21.00 | 220 | 22.75 | 16 | 1.25 |
| 20 | 27.50 | 1.69 | 23.00 | 285 | 25.00 | 20 | 1.25 |
| 22 | 29.50 | 1.81 | 25.25 | 355 | 27.25 | 20 | 1.38 |
| 24 | 32.00 | 1.88 | 27.25 | 430 | 29.50 | 20 | 1.38 |