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 | Diameter of Bolt Holes | Bolt Circle Diameter P | Approx. Weight Per Union (lb) |
1/2 | - | - | - | - | - | - | - | - | - | - | - |
3/4 | - | - | - | - | - | - | - | - | - | - | - |
1 | 6 1/4 | 2 | 1 1/2 | * | 1.315 | 2 1/4 | 3 1/2 | 4 | 1 | 4 1/4 | - |
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 | - |
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 | - |
2 | 9 1/4 | 3 5/8 | 2 | * | 2.375 | 3 3/4 | 5 | 8 | 1 1/8 | 6 3/4 | - |
2 1/2 | 10 1/2 | 4 1/8 | 2 1/4 | * | 2.875 | 4 1/2 | 5 5/8 | 8 | 1 1/4 | 7 3/4 | - |
3 | 12 | 5 | 2 5/8 | * | 3.500 | 5 1/4 | 6 5/8 | 8 | 1 3/8 | 9 | - |
3 1/2 | - | - | - | - | - | - | - | - | - | - | - |
4 | 14 | 6 3/16 | 3 | * | 4.500 | 6 1/2 | 7 1/2 | 8 | 1 5/8 | 10 3/4 | - |
5 | 16 1/2 | 7 5/16 | 3 5/8 | * | 5.563 | 8 | 9 | 8 | 1 7/8 | 12 3/4 | - |
6 | 19 | 8 1/2 | 4 1/4 | * | 6.625 | 9 1/4 | 10 3/4 | 8 | 2 1/8 | 14 1/2 | - |
8 | 21 3/4 | 10 5/8 | 5 | * | 8.625 | 12 | 12 1/2 | 12 | 2 1/8 | 17 1/4 | - |
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 | - |
12 | 30 | 15 | 7 1/4 | * | 12.750 | 17 3/8 | 18 1/4 | 12 | 2 7/8 | 24 3/8 | - |
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