ASME B16.47 Class 900 Series B Blind Flanges
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- All dimensions are in inches
- These flanges will be furnished with a 1/4″ raised face unless otherwise specified.
(Size Chart)
| Nominal Pipe Size | Outside Diameter (O) | Bolt Circle (W) | Raised Face Diameter (R) | Number of Holes | Diameter of Holes | Minimum Thickness (T) | Approximate Weight (lbs) |
|---|---|---|---|---|---|---|---|
| 26 | 40.25 | 35.50 | 30.00 | 20 | 2.62 | 6.06 | 2185 |
| 28 | 43.50 | 38.25 | 32.25 | 20 | 2.88 | 6.56 | 2762 |
| 30 | 46.50 | 40.75 | 34.50 | 20 | 3.12 | 6.93 | 3334 |
| 32 | 48.75 | 43.00 | 36.50 | 20 | 3.12 | 7.31 | 3865 |
| 34 | 51.75 | 45.50 | 39.00 | 20 | 3.38 | 7.68 | 4575 |
| 36 | 53.00 | 47.25 | 40.50 | 24 | 3.12 | 7.94 | 4963 |
| 38 | 57.50 | 50.75 | 43.25 | 20 | 3.62 | 8.50 | 6253 |
| 40 | 59.50 | 52.75 | 45.75 | 24 | 3.62 | 8.81 | 6940 |
| 42 | 61.50 | 54.75 | 47.75 | 24 | 3.62 | 9.12 | 7675 |
| 44 | 64.88 | 57.62 | 50.00 | 24 | 3.88 | 9.56 | 8955 |
| 46 | 68.25 | 60.50 | 52.50 | 24 | 4.12 | 10.06 | 10,426 |
| 48 | 70.25 | 62.50 | 54.50 | 24 | 4.12 | 10.38 | 11,398 |