| NPS | DN |
Outside Diameter (D) |
Diameter of Bolt Circle (K) |
Diameter of Bolt Hole (L) inches (mm) |
Number of Bolts |
Nominal Diameter of Bolts (Inches) |
Flange Thickness (C) |
Hub Diameter (N) |
Length through Hub (H2) |
Bore (B2) |
Corner Radius of Bore of Lapped flange and Pipe (r) |
Hub Radius (min) (R1) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1/2 | 15 | 95 | 66,7 | 5/8 (15,9) | 4 | 1/2 | 14,3 | 38 | 22,2 | 23,0 | 3,0 | 3 |
| 3/4 | 20 | 117 | 82,6 | 3/4 (19,0) | 4 | 5/8 | 15,9 | 48 | 25,4 | 28,0 | 3,0 | 3 |
| 1 | 25 | 124 | 88,9 | 3/4 (19,0) | 4 | 5/8 | 17,5 | 54 | 27,0 | 35,0 | 3,0 | 3 |
| 1-1/4 | 32 | 133 | 98,4 | 3/4 (19,0) | 4 | 5/8 | 19,0 | 64 | 27,0 | 43,5 | 5,0 | 3 |
| 1-1/2 | 40 | 156 | 114,3 | 7/8 (22,2) | 4 | 3/4 | 20,6 | 70 | 30,2 | 50,0 | 6,5 | 3 |
| 2 | 50 | 165 | 127,0 | 3/4 (19,0) | 8 | 5/8 | 22,2 | 84 | 33,3 | 62,5 | 8,0 | 3 |
| 2-1/2 | 65 | 190 | 149,2 | 7/8 (22,2) | 8 | 3/4 | 25,4 | 100 | 38,1 | 75,5 | 8,0 | 3 |
| 3 | 80 | 210 | 168,3 | 7/8 (22,2) | 8 | 3/4 | 28,6 | 117 | 42,9 | 91,5 | 9,5 | 3 |
| 4 | 100 | 254 | 200,0 | 7/8 (22,2) | 8 | 3/4 | 31,8 | 146 | 47,6 | 117,0 | 9,5 | 3 |
| 5 | 125 | 279 | 235,0 | 7/8 (22,2) | 8 | 3/4 | 34,9 | 178 | 50,8 | 145,0 | 11,0 | 6,5 |
| 6 | 150 | 318 | 269,9 | 7/8 (22,2) | 12 | 3/4 | 36,5 | 206 | 52,4 | 171,0 | 12,5 | 6,5 |
| 8 | 200 | 381 | 330,2 | 1 (25,4) | 12 | 7/8 | 41,3 | 260 | 61,9 | 222,0 | 12,5 | 6,5 |
| 10 | 250 | 444 | 387,4 | 1-1/8 (28,6) | 16 | 1 | 47,6 | 321 | 95,3 | 277,0 | 12,5 | 6,5 |
| 12 | 300 | 521 | 450,8 | 1-1/4 (31,8) | 16 | 1-1/8 | 50,8 | 375 | 101,6 | 328,0 | 12,5 | 9,5 |
| 14 | 350 | 584 | 514,4 | 1-1/4 (31,8) | 20 | 1-1/8 | 54,0 | 425 | 111,1 | 360,0 | 12,5 | 9,5 |
| 16 | 400 | 648 | 571,5 | 1-3/8 (34,9) | 20 | 1-1/4 | 57,2 | 483 | 120,7 | 411,0 | 12,5 | 9,5 |
| 18 | 450 | 711 | 628,6 | 1-3/8 (34,9) | 24 | 1-1/4 | 60,3 | 533 | 130,2 | 462,0 | 12,5 | 9,5 |
| 20 | 500 | 775 | 685,8 | 1-3/8 (34,9) | 24 | 1-1/4 | 63,5 | 587 | 139,7 | 514,0 | 12,5 | 9,5 |
| 24 | 600 | 914 | 812,8 | 1-5/8 (41,3) | 24 | 1-1/2 | 69,8 | 702 | 152,4 | 616,0 | 12,5 | 9,5 |
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