Flange - Weld Neck, ANSI Class 2500, B16.5 (in) | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Pipe Size
(NPS) | Outside Diameter of Flange
A | Diameter of Raised Face
B | Thickness of Flange
C | Diameter of Bore
D | Diameter of Hub at Weld
H | Diameter of Hub at Base
J | Length of Hub
K | 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 | * | 0.840 | 1 11/16 | 2 7/8 | 4 | 7/8 | 3 1/2 | 8 |
| 3/4 | 5 1/2 | 1 11/16 | 1 1/4 | * | 1.050 | 2 | 3 1/8 | 4 | 7/8 | 3 3/4 | 9 |
| 1 | 6 1/4 | 2 | 1 3/8 | * | 1.315 | 2 1/4 | 3 1/2 | 4 | 1 | 4 1/4 | 13 |
| 1 1/4 | 7 1/4 | 2 1/2 | 1 1/2 | * | 1.660 | 2 7/8 | 3 3/4 | 4 | 1 1/8 | 5 1/8 | 20 |
| 1 1/2 | 8 | 2 7/8 | 1 3/4 | * | 1.900 | 3 1/8 | 4 3/8 | 4 | 1 1/4 | 5 3/4 | 28 |
| 2 | 9 1/4 | 3 5/8 | 2 | * | 2.375 | 3 3/4 | 5 | 8 | 1 1/8 | 6 3/4 | 42 |
| 2 1/2 | 10 1/2 | 4 1/8 | 2 1/4 | * | 2.900 | 4 1/2 | 5 5/8 | 8 | 1 1/4 | 7 3/4 | 52 |
| 3 | 12 | 5 | 2 5/8 | * | 3.500 | 5 1/4 | 6 5/8 | 8 | 1 3/8 | 9 | 94 |
| 3 1/2 | - | - | - | - | - | - | - | - | - | - | - |
| 4 | 14 | 6 3/16 | 3 | * | 4.500 | 6 1/2 | 7 1/2 | 8 | 1 5/8 | 10 3/4 | 146 |
| 5 | 16 1/2 | 7 5/16 | 3 5/8 | * | 5.563 | 8 | 9 | 8 | 1 7/8 | 12 3/4 | 244 |
| 6 | 19 | 8 1/2 | 4 1/4 | * | 6.625 | 9 1/4 | 10 3/4 | 8 | 2 1/8 | 14 1/2 | 378 |
| 8 | 21 3/4 | 10 5/8 | 5 | * | 8.625 | 12 | 12 1/2 | 12 | 2 1/8 | 17 1/4 | 576 |
| 10 | 26 1/2 | 12 3/4 | 6 1/2 | * | 10.750 | 14 3/4 | 16 1/2 | 12 | 2 5/8 | 21 1/4 | 1068 |
| 12 | 30 | 15 | 7 1/4 | * | 12.750 | 17 3/8 | 18 1/4 | 12 | 2 7/8 | 24 3/8 | 1608 |
- These weld neck flanges have a raised face connection.
- Dimensions to 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.
- * To be specified by purchaser.
