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Blind Flange
Blind Flange Dimensions
The tables below show the most common sizes but are not exhaustive.
150 Lbs
| Drilling | ||||||
|---|---|---|---|---|---|---|
| Nominal Bore | Dia. (D) |
Thick. (E) |
Dia. (F) |
Nbr | Holes | Dia. (C) |
| 1/2" | 90 | 9.6 | 35.05 | 4 | 15.87 | 60.3 |
| 3/4" | 100 | 11.2 | 42.93 | 4 | 15.87 | 69.9 |
| 1" | 110 | 12.7 | 50.80 | 4 | 15.87 | 79.4 |
| 1 1/4" | 115 | 14.3 | 63.50 | 4 | 15.87 | 88.9 |
| 1 1/2" | 125 | 15.9 | 73.15 | 4 | 15.87 | 98.4 |
| 2" | 150 | 17.5 | 91.94 | 4 | 19.50 | 120.7 |
| 2 1/2" | 180 | 20.7 | 104.63 | 4 | 19.50 | 139.7 |
| 3" | 190 | 22.3 | 127.00 | 4 | 19.50 | 152.4 |
| 3 1/2" | 215 | 22.3 | 139.70 | 8 | 19.50 | 177.8 |
| 4" | 230 | 22.3 | 157.23 | 8 | 19.50 | 190.5 |
| 5" | 255 | 22.3 | 185.67 | 8 | 22.22 | 215.9 |
| 6" | 280 | 23.9 | 215.90 | 8 | 22.22 | 241.3 |
| 8" | 345 | 27.0 | 269.75 | 8 | 22.22 | 298.5 |
| 10" | 405 | 28.6 | 325.85 | 12 | 25.4 | 362.0 |
| 12" | 485 | 30.2 | 381.00 | 12 | 25.4 | 431.8 |
| 14" | 535 | 33.4 | 412.75 | 12 | 28.57 | 476.3 |
| 16" | 595 | 35.0 | 469.90 | 16 | 28.57 | 539.8 |
| 18" | 635 | 38.1 | 533.40 | 16 | 31.75 | 577.9 |
| 20" | 700 | 41.3 | 584.20 | 20 | 31.75 | 635.0 |
| 24" | 815 | 46.1 | 692.15 | 20 | 34.92 | 749.3 |
1,6mm raised face not included in the E dimension
The dimensions are in millimeters
Source : ASME B16.5 – 2007
300 Lbs
| Drilling | ||||||
|---|---|---|---|---|---|---|
| Nominal Bore | Dia. (D) |
Thick. (E) |
Dia. (F) |
Nbr | Holes | Dia. (C) |
| 1/2" | 95 | 12.7 | 35.05 | 4 | 15.87 | 66.7 |
| 3/4" | 115 | 14.3 | 42.93 | 4 | 19.05 | 82.6 |
| 1" | 125 | 15.9 | 50.80 | 4 | 19.05 | 88.9 |
| 1 1/4" | 135 | 17.5 | 63.50 | 4 | 19.05 | 98.4 |
| 1 1/2" | 155 | 19.1 | 73.15 | 4 | 22.22 | 114.3 |
| 2" | 165 | 20.7 | 91.94 | 8 | 19.05 | 127.0 |
| 2 1/2" | 190 | 23.9 | 104.64 | 8 | 22.22 | 149.2 |
| 3" | 210 | 27.0 | 127.00 | 8 | 22.22 | 168.3 |
| 3 1/2" | 230 | 28.6 | 139.70 | 8 | 22.22 | 184.2 |
| 4" | 255 | 30.2 | 157.23 | 8 | 22.22 | 200.0 |
| 5" | 280 | 33.4 | 185.67 | 8 | 22.22 | 235.0 |
| 6" | 320 | 35.0 | 215.90 | 12 | 22.22 | 269.9 |
| 8" | 380 | 39.7 | 269.75 | 12 | 25.40 | 330.2 |
| 10" | 445 | 46.1 | 325.85 | 16 | 28.57 | 387.4 |
| 12" | 520 | 49.3 | 381.00 | 16 | 31.75 | 450.8 |
| 14" | 585 | 52.4 | 412.75 | 20 | 31.75 | 514.4 |
| 16" | 650 | 55.6 | 469.90 | 20 | 34.92 | 571.5 |
| 18" | 710 | 58.8 | 533.40 | 24 | 34.92 | 628.6 |
| 20" | 775 | 62.0 | 584.20 | 24 | 34.92 | 685.8 |
| 24" | 915 | 68.3 | 692.15 | 24 | 41.27 | 812.8 |
1,6mm raised face not included in the E dimension
The dimensions are in millimeters
Source : ASME B16.5 – 2007
600 Lbs
| Drilling | ||||||
|---|---|---|---|---|---|---|
| Nominal Bore | Dia. (D) |
Thick. (E) |
Dia. (F) |
Nbr | Holes | Dia. (C) |
| 1/2" | 95 | 14.3 | 35.05 | 4 | 15.87 | 66.7 |
| 3/4" | 115 | 15.9 | 42.93 | 4 | 19.05 | 82.6 |
| 1" | 125 | 17.5 | 50.80 | 4 | 19.05 | 88.9 |
| 1 1/4" | 135 | 20.7 | 63.50 | 4 | 19.05 | 98.4 |
| 1 1/2" | 155 | 22.3 | 73.15 | 4 | 22.22 | 114.3 |
| 2" | 165 | 25.4 | 91.94 | 8 | 19.05 | 127.0 |
| 2 1/2" | 190 | 28.6 | 104.64 | 8 | 22.22 | 149.2 |
| 3" | 210 | 31.8 | 127.00 | 8 | 22.22 | 168.3 |
| 3 1/2" | 230 | 35.0 | 139.70 | 8 | 25.40 | 184.2 |
| 4" | 275 | 38.1 | 157.23 | 8 | 25.40 | 215.9 |
| 5" | 330 | 44.5 | 185.67 | 8 | 28.57 | 266.7 |
| 6" | 355 | 47.7 | 215.90 | 12 | 28.57 | 292.1 |
| 8" | 420 | 55.6 | 269.75 | 12 | 31.75 | 349.2 |
| 10" | 510 | 63.5 | 23.85 | 16 | 34.92 | 431.8 |
| 12" | 560 | 66.7 | 381.00 | 20 | 34.92 | 489.0 |
| 14" | 605 | 69.9 | 412.75 | 20 | 38.10 | 527.0 |
| 16" | 685 | 76.2 | 469.90 | 20 | 41.27 | 603.2 |
| 18" | 745 | 82.6 | 533.40 | 20 | 44.45 | 654.0 |
| 20" | 815 | 88.9 | 584.20 | 24 | 44.45 | 723.9 |
| 24" | 940 | 101.6 | 692.15 | 24 | 50.80 | 838.2 |
6,4mm raised face not included in the E dimension
The dimensions are in millimeters
Source : ASME B16.5 – 2007
