ASME B16.47 Class 75 Series B Blind Flanges
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- All dimensions are in inches
- These flanges will be furnished with a 1/16″ 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 | 30.00 | 28.50 | 27.75 | 36 | 0.75 | 1.31 | 255 |
| 28 | 32.00 | 30.50 | 29.75 | 40 | 0.75 | 1.31 | 290 |
| 30 | 34.00 | 32.50 | 31.75 | 44 | 0.75 | 1.31 | 330 |
| 32 | 36.00 | 34.50 | 33.75 | 48 | 0.75 | 1.44 | 390 |
| 34 | 38.00 | 36.50 | 35.75 | 52 | 0.75 | 1.50 | 430 |
| 36 | 40.69 | 39.06 | 38.00 | 40 | 0.88 | 1.67 | 520 |
| 38 | 42.69 | 41.06 | 40.00 | 40 | 0.88 | 1.75 | 595 |
| 40 | 44.69 | 43.06 | 42.00 | 44 | 0.88 | 1.75 | 760 |
| 42 | 46.69 | 45.06 | 44.00 | 48 | 0.88 | 1.88 | 895 |
| 44 | 49.25 | 47.38 | 46.25 | 36 | 1.00 | 1.94 | 1065 |
| 46 | 51.25 | 49.38 | 48.25 | 40 | 1.00 | 2.00 | 1185 |
| 48 | 53.25 | 51.38 | 50.25 | 44 | 1.00 | 2.12 | 1315 |
| 50 | 55.25 | 53.38 | 52.25 | 44 | 1.00 | 2.18 | 1505 |
| 52 | 57.38 | 55.50 | 54.25 | 48 | 1.00 | 2.25 | 1665 |
| 54 | 59.38 | 57.50 | 56.25 | 48 | 1.00 | 2.38 | 1840 |
| 56 | 62.00 | 59.88 | 58.50 | 40 | 1.12 | 2.44 | 2111 |
| 58 | 64.00 | 61.88 | 60.50 | 44 | 1.12 | 2.50 | 2300 |
| 60 | 66.00 | 63.88 | 62.50 | 44 | 1.12 | 2.62 | 2500 |