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Special One or Two Piece Ring and Orifice Plate Assembly - Groove Detail
Class 400 WN Flanges
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Ring Type Joint Weld Neck Orifice Flanges Class 400 - 2500
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Raised Face Weld Neck Orifice Flanges Class 400 - 2500
| Drilling | Ring Type Joint | |||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Nom Size | OD | Thickness | OD of RF | Dia at Base | Dia Bevel | LTH | Dia of Pressure Connection | Bolt Circle | Hole Dia | # of holes | Bolt Dia | Grove # | Pitch Dia | Groove Depth | Groove width | Rad at Bottom | Spec Oval RH | |
| O | C | R | X | A | Y | TT | P | E | F | r max | W | |||||||
| in | 4 | 10 | 1.5 | 6.19 | 5.75 | 4.5 | 3.5 | 1/2 | 7.88 | 1 | 8 | 7/8 | R37 | 5.875 | 0.312 | 0.469 | 0.03 | 1.06 |
| mm | 254 | 38.1 | 157 | 146 | 114.3 | 88.9 | 12.7 | 200.2 | 25.4 | 22.2 | 149.225 | 7.925 | 11.913 | 0.8 | 26.9 | |||
| in | 6 | 12.5 | 1.62 | 8.5 | 8.12 | 6.63 | 4.06 | 1/2 | 10.62 | 1 | 12 | 7/8 | R45 | 8.312 | 0.312 | 0.469 | 0.03 | 1.06 |
| mm | 317.5 | 41.1 | 216 | 206 | 168.4 | 103 | 12.7 | 269.7 | 25.4 | 22.2 | 211.125 | 7.925 | 11.913 | 0.8 | 26.9 | |||
| in | 8 | 15 | 1.88 | 10.62 | 10.25 | 8.63 | 4.62 | 1/2 | 13 | 1.12 | 12 | 1 | R49 | 10.625 | 0.312 | 0.469 | 0.03 | 1.06 |
| mm | 381 | 47.8 | 270 | 260 | 219.2 | 117 | 12.7 | 330.2 | 28.4 | 25.4 | 269.875 | 7.925 | 11.913 | 0.8 | 26.9 | |||
| in | 10 | 17.5 | 2.12 | 12.75 | 12.62 | 10.75 | 4.88 | 1/2 | 15.25 | 1.25 | 16 | 1 1/8 | R53 | 12.75 | 0.312 | 0.469 | 0.03 | 1.06 |
| mm | 444.5 | 53.8 | 324 | 321 | 273.1 | 124 | 12.7 | 387.4 | 31.8 | 28.6 | 323.850 | 7.925 | 11.913 | 0.8 | 26.9 | |||
| in | 12 | 20.5 | 2.25 | 15 | 14.75 | 12.75 | 5.38 | 1/2 | 17.75 | 1.38 | 16 | 1 1/4 | R57 | 15 | 0.312 | 0.469 | 0.03 | 1.06 |
| mm | 520.7 | 57.2 | 381 | 375 | 323.9 | 137 | 12.7 | 450.9 | 35.1 | 31.8 | 381.000 | 7.925 | 11.913 | 0.8 | 26.9 | |||
| in | 14 | 23 | 2.39 | 16.25 | 16.75 | 14 | 5.88 | 1/2 | 20.25 | 1.38 | 20 | 1 1/4 | R61 | 16.5 | 0.312 | 0.469 | 0.03 | 1.06 |
| mm | 584.2 | 60.7 | 413 | 426 | 355.6 | 149 | 12.7 | 514.4 | 35.1 | 31.8 | 419.100 | 7.925 | 11.913 | 0.8 | 26.9 | |||
| in | 16 | 25.5 | 2.5 | 18.5 | 19 | 16 | 6 | 1/2 | 22.5 | 1.5 | 20 | 1 3/8 | R65 | 18.5 | 0.312 | 0.469 | 0.03 | 1.19 |
| mm | 647.7 | 63.5 | 470 | 483 | 406.4 | 152 | 12.7 | 571.5 | 38.1 | 34.9 | 469.900 | 7.925 | 11.913 | 0.8 | 30.2 | |||
| in | 18 | 28 | 2.62 | 21 | 21 | 18 | 6.5 | 1/2 | 24.75 | 1.5 | 24 | 1 3/8 | R69 | 21 | 0.312 | 0.469 | 0.03 | 1.19 |
| mm | 711.2 | 66.5 | 533 | 533 | 457.2 | 165 | 12.7 | 628.7 | 38.1 | 34.9 | 533.400 | 7.925 | 11.913 | 0.8 | 30.2 | |||
| in | 20 | 30.5 | 2.75 | 23 | 23.12 | 20 | 6.62 | 1/2 | 27 | 1.62 | 24 | 1 1/2 | R73 | 23 | 0.375 | 0.531 | 0.06 | 1.25 |
| mm | 774.7 | 69.9 | 584 | 587 | 508 | 168 | 12.7 | 685.8 | 41.1 | 38.1 | 584.200 | 9.525 | 13.487 | 1.5 | 31.8 | |||
| in | 24 | 36 | 3 | 27.25 | 27.62 | 24 | 6.88 | 1/2 | 32 | 1.89 | 24 | 1 3/4 | ||||||
| mm | 914.4 | 76.2 | 692.2 | 702 | 609.6 | 174.8 | 12.7 | 812.8 | 48 | 44.5 |
Note: Weld neck flanges NPS 3″ and smaller are identical to Class 600 flanges and may be so marked.
