All dimensions are in "mm" unless noted otherwise.
Dimensions of Class 150 RTJ Flanges as per ASME B16.5.
| Nominal Pipe Size (inches) |
Pitch Dia of Ring and Groove |
Width of Ring | Height of Ring | Width of Flat on Octagonal Rings |
Width of Groove | Depth of Groove | Dia of Raised Face |
Ring Number | Approx. gap between flanges after gasket compression |
|
|---|---|---|---|---|---|---|---|---|---|---|
| Oval | Octagonal | |||||||||
| P | A | B | H | C | F | E | K (min) | X | ||
| 1 | 47.62 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 63.5 | R15 | 4.1 |
| 1-1/4 | 57.15 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 73.2 | R17 | 4.1 |
| 1-1/2 | 65.07 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 82.6 | R19 | 4.1 |
| 2 | 82.55 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 102 | R22 | 4.1 |
| 2-1/2 | 101.60 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 121 | R25 | 4.1 |
| 3 | 114.30 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 133 | R29 | 4.1 |
| 3-1/2 | 131.78 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 154 | R33 | 4.1 |
| 4 | 149.22 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 171 | R36 | 4.1 |
| 5 | 171.45 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 194 | R40 | 4.1 |
| 6 | 193.68 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 219 | R43 | 4.1 |
| 8 | 247.65 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 273 | R48 | 4.1 |
| 10 | 304.80 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 330 | R52 | 4.1 |
| 12 | 381.00 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 406 | R56 | 4.1 |
| 14 | 396.88 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 425 | R59 | 3.0 |
| 16 | 454.02 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 483 | R64 | 3.0 |
| 18 | 517.52 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 546 | R68 | 3.0 |
| 20 | 558.80 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 597 | R72 | 3.0 |
| 24 | 673.10 | 8.0 | 14.3 | 12.7 | 5.2 | 8.7 | 6.4 | 711 | R76 | 3.0 |