Flange - Blind, ANSI Class 2500, B16.5, RF (in) | |||||||
|---|---|---|---|---|---|---|---|
| Pipe Size
(NPS) | Outside Diameter of Flange
A | Diameter of Raised Face
B | Thickness of Flange
C | Number of Bolt Holes
NBH | Diameter of Bolt Holes
DBH | Bolt Circle Diameter
P | Approx Weight
(lb) AW |
| 1/2 | 5 1/4 | 1 3/8 | 1 3/16 | 4 | 7/8 | 3 1/2 | 7 |
| 3/4 | 5 1/2 | 1 11/16 | 1 1/4 | 4 | 7/8 | 3 3/4 | 10 |
| 1 | 6 1/4 | 2 | 1 3/8 | 4 | 1 | 4 1/4 | 12 |
| 1 1/4 | 7 1/4 | 2 1/2 | 1 1/2 | 4 | 1 1/8 | 5 1/8 | 18 |
| 1 1/2 | 8 | 2 7/8 | 1 3/4 | 4 | 1 1/4 | 5 3/4 | 25 |
| 2 | 9 1/4 | 3 5/8 | 2 | 8 | 1 1/8 | 6 3/4 | 39 |
| 2 1/2 | 10 1/2 | 4 1/8 | 2 1/4 | 8 | 1 1/4 | 7 3/4 | 56 |
| 3 | 12 | 5 | 2 5/8 | 8 | 1 3/8 | 9 | 86 |
| 3 1/2 | - | - | - | - | - | - | - |
| 4 | 14 | 6 3/16 | 3 | 8 | 1 5/8 | 10 3/4 | 133 |
| 5 | 16 1/2 | 7 5/16 | 3 5/8 | 8 | 1 7/8 | 12 3/4 | 223 |
| 6 | 19 | 8 1/2 | 4 1/4 | 8 | 2 1/8 | 14 1/2 | 345 |
| 8 | 21 3/4 | 10 5/8 | 5 | 12 | 2 1/8 | 17 1/4 | 533 |
| 10 | 26 1/2 | 12 3/4 | 6 1/2 | 12 | 2 5/8 | 21 1/4 | 1025 |
| 12 | 30 | 15 | 7 1/4 | 12 | 2 7/8 | 24 3/8 | 1464 |
- This datasheet is for blind flanges that have a raised face connection.
- Dimensions per ASME B16.5 - Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard
- Bolt circle diameters are 1/8 inch larger than bolt diameter.
