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ToggleThe article shows the ASME B16.5 dimensions of Blind Flanges Classes from 150 to 2500 (NPS, ID, OD, Thickness, and bolting details, tolerances) – in millimeters.
ASME BLIND FLANGE DIMENSIONS & WEIGHTS
The article shows the ASME B16.5 dimensions and weights for blind flanges (FF, RF).
BLIND FLANGES SIZES in INCHES
BLIND CLASS 150 (FF, RF)
NPS | OD A | Diameter of Raised Face B | Thickness of Flange C | Number of Bolt Holes NBH | Diameter of Bolt Holes DBH | Bolt Circle Diameter P | Approx Weight (lb) AW |
---|---|---|---|---|---|---|---|
1/2 | 3 1/2 | 1 3/8 | 7/16 | 4 | 5/8 | 2 3/8 | 2 |
3/4 | 3 7/8 | 1 11/16 | 1/2 | 4 | 5/8 | 2 3/4 | 2 |
1 | 4 1/4 | 2 | 9/16 | 4 | 5/8 | 3 1/8 | 2 |
1 1/4 | 4 5/8 | 2 1/2 | 5/8 | 4 | 5/8 | 3 1/2 | 2 |
1 1/2 | 5 | 2 7/8 | 11/16 | 4 | 5/8 | 3 7/8 | 3 |
2 | 6 | 3 5/8 | 3/4 | 4 | 3/4 | 4 3/4 | 3 |
2 1/2 | 7 | 4 1/8 | 7/8 | 4 | 3/4 | 5 1/2 | 7 |
3 | 7 1/2 | 5 | 15/16 | 4 | 3/4 | 6 | 9 |
3 1/2 | 8 1/2 | 5 1/2 | 15/16 | 8 | 3/4 | 7 | 13 |
4 | 9 | 6 3/16 | 15/16 | 8 | 3/4 | 7 1/2 | 17 |
5 | 10 | 7 5/16 | 15/16 | 8 | 7/8 | 8 1/2 | 20 |
6 | 11 | 8 1/2 | 1 | 8 | 7/8 | 9 1/2 | 26 |
8 | 13 1/2 | 10 5/8 | 1 1/8 | 8 | 7/8 | 11 3/4 | 45 |
10 | 16 | 12 3/4 | 1 3/16 | 12 | 1 | 14 1/4 | 70 |
12 | 19 | 15 | 1 1/4 | 12 | 1 | 17 | 110 |
14 | 21 | 16 1/4 | 1 3/8 | 12 | 1 1/8 | 18 3/4 | 131 |
16 | 23 1/2 | 18 1/2 | 1 7/16 | 16 | 1 1/8 | 21 1/4 | 170 |
18 | 25 | 21 | 1 9/16 | 16 | 1 1/4 | 22 3/4 | 209 |
20 | 27 1/2 | 23 | 1 11/16 | 20 | 1 1/4 | 25 | 272 |
22 | 29 1/2 | 25 1/4 | 1 13/16 | 20 | 1 3/8 | 27 1/4 | 333 |
24 | 32 | 27 1/4 | 1 7/8 | 20 | 1 3/8 | 29 1/2 | 411 |
BLIND CLASS 300 (FF, RF)
NPS | OD A | Diameter of Raised Face B | Thickness of Flange C | Number of Bolt Holes NBH | Diameter of Bolt Holes DBH | Bolt Circle Diameter P | Approx Weight (lb) AW |
---|---|---|---|---|---|---|---|
1/2 | 3 3/4 | 1 3/8 | 9/16 | 4 | 5/8 | 2 5/8 | 2 |
3/4 | 4 5/8 | 1 11/16 | 5/8 | 4 | 3/4 | 3 1/4 | 3 |
1 | 4 7/8 | 2 | 11/16 | 4 | 3/4 | 3 1/2 | 4 |
1 1/4 | 5 1/4 | 2 1/2 | 3/4 | 4 | 3/4 | 3 7/8 | 6 |
1 1/2 | 6 1/8 | 2 7/8 | 13/16 | 4 | 7/8 | 4 1/2 | 7 |
2 | 6 1/2 | 3 5/8 | 7/8 | 8 | 3/4 | 5 | 8 |
2 1/2 | 7 1/2 | 4 1/8 | 1 | 8 | 7/8 | 5 7/8 | 12 |
3 | 8 1/4 | 5 | 1 1/8 | 8 | 7/8 | 6 5/8 | 16 |
3 1/2 | 9 | 5 1/2 | 1 3/16 | 8 | 7/8 | 7 1/4 | 21 |
4 | 10 | 6 3/16 | 1 1/4 | 8 | 7/8 | 7 7/8 | 27 |
5 | 11 | 7 5/16 | 1 3/8 | 8 | 7/8 | 9 1/4 | 35 |
6 | 12 1/2 | 8 1/2 | 1 7/16 | 12 | 7/8 | 10 5/8 | 50 |
8 | 15 | 10 5/8 | 1 5/8 | 12 | 1 | 13 | 81 |
10 | 17 1/2 | 12 3/4 | 1 7/8 | 16 | 1 1/8 | 15 1/4 | 127 |
12 | 20 1/2 | 15 | 2 | 16 | 1 1/4 | 17 3/4 | 184 |
14 | 23 | 16 1/4 | 2 1/8 | 20 | 1 1/4 | 20 1/4 | 235 |
16 | 25 1/2 | 18 1/2 | 2 1/4 | 20 | 1 3/8 | 22 1/2 | 307 |
18 | 28 | 21 | 2 3/8 | 24 | 1 3/8 | 24 3/4 | 390 |
20 | 30 1/2 | 23 | 2 1/2 | 24 | 1 3/8 | 27 | 492 |
22 | 33 | 25 1/4 | 2 5/8 | 24 | 1 5/8 | 29 1/4 | 594 |
24 | 36 | 27 1/4 | 2 3/4 | 24 | 1 5/8 | 32 | 754 |
BLIND CLASS 400 (FF, RF)
NPS | OD A | Diameter of Raised Face B | Thickness of Flange C | Number of Bolt Holes NBH | Diameter of Bolt Holes DBH | Bolt Circle Diameter P | Approx Weight (lb) AW |
---|---|---|---|---|---|---|---|
1/2 | 3 3/4 | 1 3/8 | 9/16 | 4 | 5/8 | 2 5/8 | 2 |
3/4 | 4 5/8 | 1 11/16 | 5/8 | 4 | 3/4 | 3 1/4 | 3 |
1 | 4 7/8 | 2 | 11/16 | 4 | 3/4 | 3 1/2 | 4 |
1 1/4 | 5 1/4 | 2 1/2 | 13/16 | 4 | 3/4 | 3 7/8 | 6 |
1 1/2 | 6 1/8 | 2 7/8 | 7/8 | 4 | 7/8 | 4 1/2 | 8 |
2 | 6 1/2 | 3 5/8 | 1 | 8 | 3/4 | 5 | 10 |
2 1/2 | 7 1/2 | 4 1/8 | 1 1/8 | 8 | 7/8 | 5 7/8 | 15 |
3 | 8 1/4 | 5 | 1 1/4 | 8 | 7/8 | 6 5/8 | 20 |
3 1/2 | 9 | 5 1/2 | 1 3/8 | 8 | 1 | 7 1/4 | 29 |
4 | 10 | 6 3/16 | 1 3/8 | 8 | 1 | 7 7/8 | 33 |
5 | 11 | 7 5/16 | 1 1/2 | 8 | 1 | 9 1/4 | 44 |
6 | 12 1/2 | 8 1/2 | 1 5/8 | 12 | 1 | 10 5/8 | 61 |
8 | 15 | 10 5/8 | 1 7/8 | 12 | 1 1/8 | 13 | 100 |
10 | 17 1/2 | 12 3/4 | 2 1/8 | 16 | 1 1/4 | 15 1/4 | 155 |
12 | 20 1/2 | 15 | 2 1/4 | 16 | 1 3/8 | 17 3/4 | 226 |
14 | 23 | 16 1/4 | 2 3/8 | 20 | 1 3/8 | 20 1/4 | 310 |
16 | 25 1/2 | 18 1/2 | 2 1/2 | 20 | 1 1/2 | 22 1/2 | 398 |
18 | 28 | 21 | 2 5/8 | 24 | 1 1/2 | 24 3/4 | 502 |
20 | 30 1/2 | 23 | 2 3/4 | 24 | 1 5/8 | 27 | 621 |
22 | 33 | 25 1/4 | 2 7/8 | 24 | 1 3/4 | 29 1/4 | 685 |
24 | 36 | 27 1/4 | 3 | 24 | 1 7/8 | 32 | 936 |
BLIND CLASS 600 (FF, RF)
NPS | OD A | Diameter of Raised Face B | Thickness of Flange C | Number of Bolt Holes NBH | Diameter of Bolt Holes DBH | Bolt Circle Diameter P | Approx. Weight (lb) AW |
---|---|---|---|---|---|---|---|
1/2 | 3 3/4 | 1 3/8 | 9/16 | 4 | 5/8 | 2 5/8 | 3 |
3/4 | 4 5/8 | 1 11/16 | 5/8 | 4 | 3/4 | 3 1/4 | 4 |
1 | 4 7/8 | 2 | 11/16 | 4 | 3/4 | 3 1/2 | 4 |
1 1/4 | 5 1/4 | 2 1/2 | 13/16 | 4 | 3/4 | 3 7/8 | 6 |
1 1/2 | 6 1/8 | 2 7/8 | 7/8 | 4 | 7/8 | 4 1/2 | 8 |
2 | 6 1/2 | 3 5/8 | 1 | 8 | 3/4 | 5 | 10 |
2 1/2 | 7 1/2 | 4 1/8 | 1 1/8 | 8 | 7/8 | 5 7/8 | 15 |
3 | 8 1/4 | 5 | 1 1/4 | 8 | 7/8 | 6 5/8 | 20 |
3 1/2 | 9 | 5 1/2 | 1 3/8 | 8 | 1 | 7 1/4 | 29 |
4 | 10 3/4 | 6 3/16 | 1 1/2 | 8 | 1 | 8 1/2 | 41 |
5 | 13 | 7 5/16 | 1 3/4 | 8 | 1 1/8 | 10 1/2 | 68 |
6 | 14 | 8 1/2 | 1 7/8 | 12 | 1 1/8 | 11 1/2 | 86 |
8 | 16 1/2 | 10 5/8 | 2 3/16 | 12 | 1 1/4 | 13 3/4 | 140 |
10 | 20 | 12 3/4 | 2 1/2 | 16 | 1 3/8 | 17 | 321 |
12 | 22 | 15 | 2 5/8 | 20 | 1 3/8 | 19 1/4 | 295 |
14 | 23 3/4 | 16 1/4 | 2 3/4 | 20 | 1 1/2 | 20 3/4 | 378 |
16 | 27 | 18 1/2 | 3 | 20 | 1 5/8 | 23 3/4 | 527 |
18 | 29 1/4 | 21 | 3 1/4 | 20 | 1 3/4 | 25 3/4 | 665 |
20 | 32 | 23 | 3 1/2 | 24 | 1 3/4 | 28 1/2 | 855 |
22 | 34 1/4 | 25 1/4 | 3 3/4 | 24 | 1 7/8 | 30 5/8 | 1000 |
24 | 37 | 27 1/4 | 4 | 24 | 2 | 33 | 1250 |
BLIND CLASS 900 (FF, RF)
NPS | OD A | Diameter of Raised Face B | Thickness of Flange C | Number of Bolt Holes NBH | Diameter of Bolt Holes DBH | Bolt Circle Diameter P | Approx. Weight (lb) AW |
---|---|---|---|---|---|---|---|
1/2 | 4 3/4 | 1 3/8 | 7/8 | 4 | 7/8 | 3 1/4 | 4 |
3/4 | 5 1/8 | 1 11/16 | 1 | 4 | 7/8 | 3 1/2 | 6 |
1 | 5 7/8 | 2 | 1 1/8 | 4 | 1 | 4 | 9 |
1 1/4 | 6 1/4 | 2 1/2 | 1 1/8 | 4 | 1 | 4 3/8 | 10 |
1 1/2 | 7 | 2 7/8 | 1 1/4 | 4 | 1 1/8 | 4 7/8 | 14 |
2 | 8 1/2 | 3 5/8 | 1 1/2 | 8 | 1 | 6 1/2 | 25 |
2 1/2 | 9 5/8 | 4 1/8 | 1 5/8 | 8 | 1 1/8 | 7 1/2 | 32 |
3 | 9 1/2 | 5 | 1 1/2 | 8 | 1 | 7 1/2 | 35 |
3 1/2 | – | – | – | – | – | – | – |
4 | 11 1/2 | 6 3/16 | 1 3/4 | 8 | 1 1/4 | 9 1/4 | 54 |
5 | 13 3/4 | 7 5/16 | 2 | 8 | 1 3/8 | 11 | 87 |
6 | 15 | 8 1/2 | 2 3/16 | 12 | 1 1/4 | 12 1/2 | 115 |
8 | 18 1/2 | 10 5/8 | 2 1/2 | 12 | 1 1/2 | 15 1/2 | 200 |
10 | 21 1/2 | 12 3/4 | 2 3/4 | 16 | 1 1/2 | 18 1/2 | 290 |
12 | 24 | 15 | 3 1/8 | 20 | 1 1/2 | 21 | 415 |
14 | 25 1/4 | 16 1/4 | 3 3/8 | 20 | 1 5/8 | 22 | 520 |
16 | 27 3/4 | 18 1/2 | 3 1/2 | 20 | 1 3/4 | 24 1/4 | 619 |
18 | 31 | 21 | 4 | 20 | 2 | 27 | 880 |
20 | 33 3/4 | 23 | 4 1/4 | 20 | 2 1/8 | 29 1/2 | 1107 |
22 | – | – | – | – | – | – | – |
24 | 41 | 27 1/4 | 5 1/2 | 20 | 2 5/8 | 35 1/2 | 2099 |
BLIND CLASS 1500 (FF, RF)
NPS | OD A | Diameter of Raised Face B | Thickness of Flange C | Number of Bolt Holes NBH | Diameter of Bolt Holes DBH | Bolt Circle Diameter P | Approx Weight (lb) AW |
---|---|---|---|---|---|---|---|
1/2 | 4 3/4 | 1 3/8 | 7/8 | 4 | 7/8 | 3 1/4 | 4 |
3/4 | 5 1/8 | 1 11/16 | 1 | 4 | 7/8 | 3 1/2 | 6 |
1 | 5 7/8 | 2 | 1 1/8 | 4 | 1 | 4 | 9 |
1 1/4 | 6 1/4 | 2 1/2 | 1 1/8 | 4 | 1 | 4 3/8 | 10 |
1 1/2 | 7 | 2 7/8 | 1 1/4 | 4 | 1 1/8 | 4 7/8 | 14 |
2 | 8 1/2 | 3 5/8 | 1 1/2 | 8 | 1 | 6 1/2 | 25 |
2 1/2 | 9 5/8 | 4 1/8 | 1 5/8 | 8 | 1 1/8 | 7 1/2 | 35 |
3 | 10 1/2 | 5 | 1 7/8 | 8 | 1 1/4 | 8 | 48 |
3 1/2 | – | – | – | – | – | – | – |
4 | 12 1/4 | 6 3/16 | 2 1/8 | 8 | 1 3/8 | 9 1/2 | 73 |
5 | 14 3/4 | 7 5/16 | 2 7/8 | 8 | 1 5/8 | 11 1/2 | 142 |
6 | 15 1/2 | 8 1/2 | 3 1/4 | 12 | 1 1/2 | 12 1/2 | 159 |
8 | 19 | 10 5/8 | 3 5/8 | 12 | 1 3/4 | 15 1/2 | 302 |
10 | 23 | 12 3/4 | 4 1/4 | 12 | 2 | 19 | 507 |
12 | 26 1/2 | 15 | 4 7/8 | 16 | 2 1/8 | 22 1/2 | 775 |
14 | 29 1/2 | 16 1/4 | 5 1/4 | 16 | 2 3/8 | 25 | 975 |
16 | 32 1/2 | 18 1/2 | 5 3/4 | 16 | 2 5/8 | 27 3/4 | 1300 |
18 | 36 | 21 | 6 3/8 | 16 | 2 7/8 | 30 1/2 | 1750 |
20 | 38 3/4 | 23 | 7 | 16 | 3 1/8 | 32 3/4 | 2225 |
22 | – | – | – | – | – | – | – |
24 | 46 | 27 1/4 | 8 | 16 | 3 5/8 | 39 | 3625 |
BLIND CLASS 2500 (FF, RF)
NPS | OD A | Diameter of Raised Face B | Thickness of Flange C | Number of Bolt Holes NBH | Diameter of Bolt Holes DBH | Bolt Circle Diameter P | Approx Weight (lb) AW |
---|---|---|---|---|---|---|---|
1/2 | 5 1/4 | 1 3/8 | 1 3/16 | 4 | 7/8 | 3 1/2 | 7 |
3/4 | 5 1/2 | 1 11/16 | 1 1/4 | 4 | 7/8 | 3 3/4 | 10 |
1 | 6 1/4 | 2 | 1 3/8 | 4 | 1 | 4 1/4 | 12 |
1 1/4 | 7 1/4 | 2 1/2 | 1 1/2 | 4 | 1 1/8 | 5 1/8 | 18 |
1 1/2 | 8 | 2 7/8 | 1 3/4 | 4 | 1 1/4 | 5 3/4 | 25 |
2 | 9 1/4 | 3 5/8 | 2 | 8 | 1 1/8 | 6 3/4 | 39 |
2 1/2 | 10 1/2 | 4 1/8 | 2 1/4 | 8 | 1 1/4 | 7 3/4 | 56 |
3 | 12 | 5 | 2 5/8 | 8 | 1 3/8 | 9 | 86 |
3 1/2 | – | – | – | – | – | – | – |
4 | 14 | 6 3/16 | 3 | 8 | 1 5/8 | 10 3/4 | 133 |
5 | 16 1/2 | 7 5/16 | 3 5/8 | 8 | 1 7/8 | 12 3/4 | 223 |
6 | 19 | 8 1/2 | 4 1/4 | 8 | 2 1/8 | 14 1/2 | 345 |
8 | 21 3/4 | 10 5/8 | 5 | 12 | 2 1/8 | 17 1/4 | 533 |
10 | 26 1/2 | 12 3/4 | 6 1/2 | 12 | 2 5/8 | 21 1/4 | 1025 |
12 | 30 | 15 | 7 1/4 | 12 | 2 7/8 | 24 3/8 | 1464 |
BLIND FLANGES SIZES in MILLIMETERS
BLIND CLASS 150 (FF, RF)
NPS | DN | OD | Thk | RF Diam. | RF Height | PCD | Bolts | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | Metric Stud | Weight in kg |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | |||||||||
1/2 | 15 | 90 | 9.6 | 34.9 | 2 | 60.3 | 4 | 1/2 | 50 | 55 | 5/8 | M14 | 0.9 |
3/4 | 20 | 100 | 11.2 | 42.9 | 2 | 69.9 | 4 | 1/2 | 50 | 65 | 5/8 | M14 | 0.9 |
1 | 25 | 110 | 12.7 | 50.8 | 2 | 79.4 | 4 | 1/2 | 55 | 65 | 5/8 | M14 | 0.9 |
1 1/4 | 32 | 115 | 14.3 | 63.5 | 2 | 88.9 | 4 | 1/2 | 55 | 70 | 5/8 | M14 | 1.4 |
1 1/2 | 40 | 125 | 15.9 | 73 | 2 | 98.4 | 4 | 1/2 | 65 | 70 | 5/8 | M14 | 1.8 |
2 | 50 | 150 | 17.5 | 92.1 | 2 | 120.7 | 4 | 5/8 | 70 | 85 | 3/4 | M16 | 2.3 |
2 1/2 | 65 | 180 | 20.7 | 104.8 | 2 | 139.7 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 3.2 |
3 | 80 | 190 | 22.3 | 127 | 2 | 152.4 | 4 | 5/8 | 75 | 90 | 3/4 | M16 | 4.1 |
3 1/2 | 90 | 215 | 22.3 | 139.7 | 2 | 177.8 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 5.9 |
4 | 100 | 230 | 22.3 | 157.2 | 2 | 190.5 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 7.7 |
5 | 125 | 255 | 22.3 | 185.7 | 2 | 215.9 | 8 | 3/4 | 85 | 95 | 7/8 | M20 | 9.1 |
6 | 150 | 280 | 23.9 | 215.9 | 2 | 241.3 | 8 | 3/4 | 85 | 100 | 7/8 | M20 | 11.8 |
8 | 200 | 345 | 27 | 269.9 | 2 | 298.5 | 8 | 3/4 | 90 | 110 | 7/8 | M20 | 20.5 |
10 | 250 | 405 | 28.6 | 323.8 | 2 | 362 | 12 | 7/8 | 100 | 115 | 1 | M24 | 32 |
12 | 300 | 485 | 30.2 | 381 | 2 | 431.8 | 12 | 7/8 | 100 | 120 | 1 | M24 | 50 |
14 | 350 | 535 | 33.4 | 412.8 | 2 | 476.3 | 12 | 1 | 115 | 135 | 1 1/8 | M27 | 64 |
16 | 400 | 595 | 35 | 469.9 | 2 | 539.8 | 16 | 1 | 115 | 135 | 1 1/8 | M27 | 82 |
18 | 450 | 635 | 38.1 | 533.4 | 2 | 577.9 | 16 | 1 1/8 | 125 | 145 | 1 1/4 | M30 | 100 |
20 | 500 | 700 | 41.3 | 584.2 | 2 | 635 | 20 | 1 1/8 | 140 | 160 | 1 1/4 | M30 | 130 |
24 | 600 | 815 | 46.1 | 692.2 | 2 | 749.3 | 20 | 1 1/4 | 150 | 170 | 1 3/8 | M33 | 196 |
BLIND CLASS 300 (FF, RF)
NPS | DN | OD | Thk | RF Diam. | RF Height | PCD | Bolts # | Bolt Size UNC | Machine Bolt Length | RF Stud Length | Hole Size | Metric Stud | Weight in kg |
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | |||||||||
1/2 | 15 | 95 | 12.7 | 34.9 | 2 | 66.7 | 4 | 1/2 | 55 | 65 | 5/8 | M14 | 1.4 |
3/4 | 20 | 115 | 14.3 | 42.9 | 2 | 82.6 | 4 | 5/8 | 65 | 75 | 3/4 | M16 | 1.4 |
1 | 25 | 125 | 15.9 | 50.8 | 2 | 88.9 | 4 | 5/8 | 65 | 75 | 3/4 | M16 | 1.4 |
1 1/4 | 32 | 135 | 17.5 | 63.5 | 2 | 98.4 | 4 | 5/8 | 70 | 85 | 3/4 | M16 | 1.8 |
1 1/2 | 40 | 155 | 19.1 | 73 | 2 | 114.3 | 4 | 3/4 | 75 | 90 | 7/8 | M20 | 2.7 |
2 | 50 | 165 | 20.7 | 92.1 | 2 | 127 | 8 | 5/8 | 75 | 90 | 3/4 | M16 | 3.7 |
2 1/2 | 65 | 190 | 23.9 | 104.8 | 2 | 149.2 | 8 | 3/4 | 85 | 100 | 7/8 | M20 | 5.5 |
3 | 80 | 210 | 27 | 127 | 2 | 168.3 | 8 | 3/4 | 90 | 110 | 7/8 | M20 | 7.3 |
3 1/2 | 90 | 230 | 28.6 | 139.7 | 2 | 184.2 | 8 | 3/4 | 95 | 110 | 7/8 | M20 | 9.6 |
4 | 100 | 255 | 30.2 | 157.2 | 2 | 200 | 8 | 3/4 | 95 | 115 | 7/8 | M20 | 12.3 |
5 | 125 | 280 | 33.4 | 185.7 | 2 | 235 | 8 | 3/4 | 110 | 120 | 7/8 | M20 | 15.9 |
6 | 150 | 320 | 35 | 215.9 | 2 | 269.9 | 12 | 3/4 | 110 | 120 | 7/8 | M20 | 22.7 |
8 | 200 | 380 | 39.7 | 269.9 | 2 | 330.2 | 12 | 7/8 | 120 | 140 | 1 | M24 | 36 |
10 | 250 | 445 | 46.1 | 323.8 | 2 | 387.4 | 16 | 1 | 140 | 160 | 1 1/8 | M27 | 57 |
12 | 300 | 520 | 49.3 | 381 | 2 | 450.8 | 16 | 1 1/8 | 145 | 170 | 1 1/4 | M30 | 84 |
14 | 350 | 585 | 52.4 | 412.8 | 2 | 514.4 | 20 | 1 1/8 | 160 | 180 | 1 1/4 | M30 | 113 |
16 | 400 | 650 | 55.6 | 469.9 | 2 | 571.5 | 20 | 1 1/4 | 165 | 190 | 1 3/8 | M33 | 134 |
18 | 450 | 710 | 58.8 | 533.4 | 2 | 628.6 | 24 | 1 1/4 | 170 | 195 | 1 3/8 | M33 | 181 |
20 | 500 | 775 | 62 | 584.2 | 2 | 685.8 | 24 | 1 1/4 | 185 | 205 | 1 3/8 | M33 | 230 |
24 | 600 | 915 | 68.3 | 692.2 | 2 | 812.8 | 24 | 1 1/2 | 205 | 230 | 1 5/8 | M39 |
BLIND CLASS 400 (FF, RF)
NPS | DN | OD | Thk | RF Diam. | RF Height | PCD | Bolts # | Bolt Size UNC | RF Stud Length | Hole Size | Metric Stud | Weight in kg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | ||||||||
1/2 | 15 | 95 | 14.3 | 34.9 | 7 | 66.7 | 4 | 1/2 | 75 | 5/8 | M14 | 1.5 |
3/4 | 20 | 115 | 15.9 | 42.9 | 7 | 82.6 | 4 | 5/8 | 90 | 3/4 | M16 | 1.5 |
1 | 25 | 125 | 17.5 | 50.8 | 7 | 88.9 | 4 | 5/8 | 90 | 3/4 | M16 | 1.8 |
1 1/4 | 32 | 135 | 20.7 | 63.5 | 7 | 98.4 | 4 | 5/8 | 95 | 3/4 | M16 | 2.3 |
1 1/2 | 40 | 155 | 22.3 | 73 | 7 | 114.3 | 4 | 3/4 | 110 | 7/8 | M20 | 3.7 |
2 | 50 | 165 | 25.4 | 92.1 | 7 | 127 | 8 | 5/8 | 110 | 3/4 | M16 | 4.6 |
2 1/2 | 65 | 190 | 28.6 | 104.8 | 7 | 149.2 | 8 | 3/4 | 120 | 7/8 | M20 | 6.8 |
3 | 80 | 210 | 31.8 | 127 | 7 | 168.3 | 8 | 3/4 | 125 | 7/8 | M20 | 9.1 |
3 1/2 | 90 | 230 | 35 | N/A | 7 | 184.2 | 8 | 7/8 | 140 | 1 | M24 | 13.2 |
4 | 100 | 255 | 35 | 157.2 | 7 | 200 | 8 | 7/8 | 140 | 1 | M24 | 15 |
5 | 125 | 280 | 38.1 | 185.7 | 7 | 235 | 8 | 7/8 | 145 | 1 | M24 | 20 |
6 | 150 | 320 | 41.3 | 215.9 | 7 | 269.9 | 12 | 7/8 | 150 | 1 | M24 | 28 |
8 | 200 | 380 | 47.7 | 269.9 | 7 | 330 | 12 | 1 | 170 | 1 1/8 | M27 | 46 |
10 | 250 | 445 | 54 | 323.8 | 7 | 387.4 | 16 | 1 1/8 | 190 | 1 1/4 | M30 | 71 |
12 | 300 | 520 | 57.2 | 381 | 7 | 450.8 | 16 | 1 1/4 | 205 | 1 3/8 | M33 | 102 |
14 | 350 | 585 | 60.4 | 412.8 | 7 | 514.4 | 20 | 1 1/4 | 210 | 1 3/8 | M33 | 132 |
16 | 400 | 650 | 63.5 | 469.9 | 7 | 571.5 | 20 | 1 3/8 | 220 | 1 1/2 | M36 | 168 |
18 | 450 | 710 | 66.7 | 533.4 | 7 | 628.6 | 24 | 1 3/8 | 230 | 1 1/2 | M36 | 207 |
20 | 500 | 775 | 69.9 | 584.2 | 7 | 685.8 | 24 | 1 1/2 | 240 | 1 3/4 | M39 | 266 |
24 | 600 | 915 | 76.2 | 692.2 | 7 | 812.8 | 24 | 1 3/4 | 265 | 1 7/8 | M45 | 405 |
BLIND CLASS 400 (FF, RF)
NPS | DN | OD | Thk | RF Diam. | RF Height | PCD | Bolts # | Bolt Size UNC | RF Stud Length | Hole Size | Metric Stud | Weight in kg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | ||||||||
1/2 | 15 | 95 | 14.3 | 34.9 | 7 | 66.7 | 4 | 1/2 | 75 | 5/8 | M14 | 1.4 |
3/4 | 20 | 115 | 15.9 | 42.9 | 7 | 82.6 | 4 | 5/8 | 90 | 3/4 | M16 | 1.4 |
1 | 25 | 125 | 17.5 | 50.8 | 7 | 88.9 | 4 | 5/8 | 90 | 3/4 | M16 | 1.8 |
1 1/4 | 32 | 135 | 20.7 | 63.5 | 7 | 98.4 | 4 | 5/8 | 95 | 3/4 | M16 | 2.3 |
1 1/2 | 40 | 155 | 22.3 | 73 | 7 | 114.3 | 4 | 3/4 | 110 | 7/8 | M20 | 3.7 |
2 | 50 | 165 | 25.4 | 92.1 | 7 | 127 | 8 | 5/8 | 110 | 3/4 | M16 | 4.6 |
2 1/2 | 65 | 190 | 28.6 | 104.8 | 7 | 149.2 | 8 | 3/4 | 120 | 7/8 | M20 | 6.8 |
3 | 80 | 210 | 31.8 | 127 | 7 | 168.3 | 8 | 3/4 | 125 | 7/8 | M20 | 9.1 |
3 1/2 | 90 | 230 | 35 | N/A | 7 | 184.2 | 8 | 7/8 | 140 | 1 | M24 | 13.2 |
4 | 100 | 275 | 38.1 | 157.2 | 7 | 215.9 | 8 | 7/8 | 145 | 1 | M24 | 18.7 |
5 | 125 | 330 | 44.5 | 185.7 | 7 | 266.7 | 8 | 1 | 165 | 1 1/8 | M27 | 31 |
6 | 150 | 355 | 47.7 | 215.9 | 7 | 292.1 | 12 | 1 | 170 | 1 1/8 | M27 | 39 |
8 | 200 | 420 | 55.6 | 269.9 | 7 | 349.2 | 12 | 1 1/8 | 190 | 1 1/4 | M30 | 64 |
10 | 250 | 510 | 63.5 | 323.8 | 7 | 431.8 | 16 | 1 1/4 | 215 | 1 3/8 | M33 | 105 |
12 | 300 | 560 | 66.7 | 381 | 7 | 489 | 20 | 1 1/4 | 220 | 1 3/8 | M33 | 134 |
14 | 350 | 605 | 69.9 | 412.8 | 7 | 527 | 20 | 1 3/8 | 235 | 1 1/2 | M36 | 161 |
16 | 400 | 685 | 76.2 | 469.9 | 7 | 603.2 | 20 | 1 1/2 | 255 | 1 5/8 | M39 | 225 |
18 | 450 | 745 | 82.6 | 533.4 | 7 | 654 | 20 | 1 5/8 | 275 | 1 3/4 | M42 | 286 |
20 | 500 | 815 | 88.9 | 584.2 | 7 | 723.9 | 24 | 1 5/8 | 285 | 1 3/4 | M42 | 368 |
24 | 600 | 940 | 101.6 | 692.2 | 7 | 838.2 | 24 | 1 7/8 | 330 | 2 | M48 | 568 |
BLIND CLASS 900 (FF, RF)
NPS | DN | OD | Thk | RF Diam. | RF Height | PCD | Bolts # | Bolt Size UNC | RF Stud Length | Hole Size | Metric Stud | Weight in kg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | ||||||||
1/2 | 15 | 120 | 22.3 | 34.9 | 7 | 82.6 | 4 | 3/4 | 110 | 7/8 | M20 | 1.8 |
3/4 | 20 | 130 | 25.4 | 42.9 | 7 | 88.9 | 4 | 3/4 | 115 | 7/8 | M20 | 2.7 |
1 | 25 | 150 | 28.6 | 50.8 | 7 | 101.6 | 4 | 7/8 | 125 | 1 | M24 | 3.6 |
1 1/4 | 32 | 160 | 28.6 | 63.5 | 7 | 111.1 | 4 | 7/8 | 125 | 1 | M24 | 4.1 |
1 1/2 | 40 | 180 | 31.8 | 73 | 7 | 123.8 | 4 | 1 | 140 | 1 1/8 | M27 | 5.9 |
2 | 50 | 215 | 38.1 | 92.1 | 7 | 165.1 | 8 | 7/8 | 145 | 1 | M24 | 10.1 |
2 1/2 | 65 | 245 | 41.3 | 104.8 | 7 | 190.5 | 8 | 1 | 160 | 1 1/8 | M27 | 16 |
3 | 80 | 240 | 38.1 | 127 | 7 | 190.5 | 8 | 7/8 | 145 | 1 | M24 | 13 |
4 | 100 | 290 | 44.5 | 157.2 | 7 | 235 | 8 | 1 1/8 | 170 | 1 1/4 | M30 | 24.5 |
5 | 125 | 350 | 50.8 | 185.7 | 7 | 279.4 | 8 | 1 1/4 | 190 | 1 3/8 | M33 | 39.5 |
6 | 150 | 380 | 55.6 | 215.9 | 7 | 317.5 | 12 | 1 1/8 | 190 | 1 1/4 | M30 | 53 |
8 | 200 | 470 | 63.5 | 269.9 | 7 | 393.7 | 12 | 1 3/8 | 220 | 1 1/2 | M36 | 91 |
10 | 250 | 545 | 69.9 | 323.8 | 7 | 469.9 | 16 | 1 3/8 | 235 | 1 1/2 | M36 | 132 |
12 | 300 | 610 | 79.4 | 381 | 7 | 533.4 | 20 | 1 3/8 | 255 | 1 1/2 | M36 | 189 |
14 | 350 | 640 | 85.8 | 412.8 | 7 | 558.8 | 20 | 1 1/2 | 275 | 1 5/8 | M39 | 237 |
16 | 400 | 705 | 88.9 | 469.9 | 7 | 616 | 20 | 1 5/8 | 285 | 1 3/4 | M42 | 273 |
18 | 450 | 785 | 101.6 | 533.4 | 7 | 685.8 | 20 | 1 7/8 | 325 | 2 | M48 | 367 |
20 | 500 | 855 | 108 | 584.2 | 7 | 749.3 | 20 | 2 | 350 | 2 1/8 | M52 | 463 |
24 | 600 | 1040 | 139.7 | 692.2 | 7 | 901.7 | 20 | 2 1/2 | 440 | 2 5/8 | M64 | 875 |
BLIND CLASS 1500 (FF, RF)
NPS | DN | OD | Thk | RF Diam. | RF Height | PCD | Bolts # | Bolt Size UNC | RF Stud Length | Hole Size | Metric Stud | Weight in kg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | ||||||||
1/2 | 15 | 120 | 22.3 | 34.9 | 7 | 82.6 | 4 | 3/4 | 110 | 7/8 | M20 | 1.8 |
3/4 | 20 | 130 | 25.4 | 42.9 | 7 | 88.9 | 4 | 3/4 | 115 | 7/8 | M20 | 2.7 |
1 | 25 | 150 | 28.6 | 50.8 | 7 | 101.6 | 4 | 7/8 | 125 | 1 | M24 | 3.7 |
1 1/4 | 32 | 160 | 28.6 | 63.5 | 7 | 111.1 | 4 | 7/8 | 125 | 1 | M24 | 4.1 |
1 1/2 | 40 | 180 | 31.8 | 73 | 7 | 123.8 | 4 | 1 | 140 | 1 1/8 | M27 | 5.9 |
2 | 50 | 215 | 38.1 | 92.1 | 7 | 165.1 | 8 | 7/8 | 145 | 1 | M24 | 10.1 |
2 1/2 | 65 | 245 | 41.3 | 104.8 | 7 | 190.5 | 8 | 1 | 160 | 1 1/8 | M27 | 15.9 |
3 | 80 | 265 | 47.7 | 127 | 7 | 203.2 | 8 | 1 1/8 | 180 | 1 1/4 | M30 | 21.8 |
4 | 100 | 310 | 54 | 157.2 | 7 | 241.3 | 8 | 1 1/4 | 195 | 1 3/8 | M33 | 33 |
5 | 125 | 375 | 73.1 | 185.7 | 7 | 292.1 | 8 | 1 1/2 | 250 | 1 5/8 | M39 | 64 |
6 | 150 | 395 | 82.6 | 215.9 | 7 | 317.5 | 12 | 1 3/8 | 260 | 1 1/2 | M36 | 75 |
8 | 200 | 485 | 92.1 | 269.9 | 7 | 393.7 | 12 | 1 5/8 | 290 | 1 3/4 | M42 | 136 |
10 | 250 | 585 | 108 | 323.8 | 7 | 482.6 | 12 | 1 7/8 | 335 | 2 | M48 | 232 |
12 | 300 | 675 | 123.9 | 381 | 7 | 571.5 | 16 | 2 | 375 | 2 1/8 | M52 | 314 |
14 | 350 | 750 | 133.4 | 412.8 | 7 | 635 | 16 | 2 1/4 | 405 | 2 3/8 | M56 | 443 |
16 | 400 | 825 | 146.1 | 469.9 | 7 | 704.8 | 16 | 2 1/2 | 445 | 2 5/8 | M64 | 591 |
18 | 450 | 915 | 162 | 533.4 | 7 | 774.7 | 16 | 2 3/4 | 495 | 2 7/8 | M72 | 795 |
20 | 500 | 985 | 177.8 | 584.2 | 7 | 831.8 | 16 | 3 | 540 | 3 1/8 | M76 | 1022 |
24 | 600 | 1170 | 203.2 | 692.2 | 7 | 990.6 | 16 | 3 1/2 | 615 | 3 5/8 | M90 | 1648 |
BLIND CLASS 2500 (FF, RF)
NPS | DB | OD | Thk | RF Diam. | RF Height | PCD | Bolts # | Bolt Size UNC | RF Stud Length | Hole Size | Metric Stud | Weight in kg |
---|---|---|---|---|---|---|---|---|---|---|---|---|
A | B | C | D | E | ||||||||
1/2 | 15 | 135 | 30.2 | 34.9 | 7 | 88.9 | 4 | 3/4 | 120 | 7/8 | M20 | 3.2 |
3/4 | 20 | 140 | 31.8 | 42.9 | 7 | 95.2 | 4 | 3/4 | 125 | 7/8 | M20 | 3.7 |
1 | 25 | 160 | 35 | 50.8 | 7 | 108 | 4 | 7/8 | 140 | 1 | M24 | 5 |
1 1/4 | 32 | 185 | 38.1 | 63.5 | 7 | 130.2 | 4 | 1 | 150 | 1 1/8 | M27 | 7.8 |
1 1/2 | 40 | 205 | 44.5 | 73 | 7 | 146 | 4 | 1 1/8 | 170 | 1 1/4 | M30 | 10.5 |
2 | 50 | 235 | 50.9 | 92.1 | 7 | 171.4 | 8 | 1 | 180 | 1 1/8 | M27 | 18 |
2 1/2 | 65 | 265 | 57.2 | 104.8 | 7 | 196.8 | 8 | 1 1/8 | 195 | 1 1/4 | M30 | 25.5 |
3 | 80 | 305 | 66.7 | 127 | 7 | 228.6 | 8 | 1 1/4 | 220 | 1 3/8 | M33 | 39 |
4 | 100 | 355 | 76.2 | 157.2 | 7 | 273 | 8 | 1 1/2 | 255 | 1 5/8 | M39 | 61.5 |
5 | 125 | 420 | 92.1 | 185.7 | 7 | 323.8 | 8 | 1 3/4 | 300 | 1 7/8 | M45 | 102 |
6 | 150 | 485 | 108 | 215.9 | 7 | 368.3 | 8 | 2 | 345 | 2 1/8 | M52 | 157 |
8 | 200 | 550 | 127 | 269.9 | 7 | 438.2 | 12 | 2 | 380 | 2 1/8 | M52 | 241 |
10 | 250 | 675 | 165.1 | 323.8 | 7 | 539.8 | 12 | 2 1/2 | 490 | 2 5/8 | M64 | 470 |
12 | 300 | 760 | 184.2 | 381 | 7 | 619.1 | 12 | 2 3/4 | 540 | 2 7/8 | M72 | 575 |
DIMENSIONAL TOLERANCE BLIND FLANGE
BLIND FLANGE DIMENSIONAL TOLERANCE ASME B16.5 (INCHES) | ||
Dimension | Flange | Tolerance |
A | Outside Diameter |
|
D | Inside Diameter |
|
B | Diameter of contact face |
|
E, F, S | Diameter of bore |
|
P | Drilling |
|
C | Thickness |
|
L, M | Length of hub |
|
BLIND FLANGE WEIGHTS
BLIND FLANGE WEIGHT IN KGS.
The table shows the ASME B16.5 blind flange weights in Kgs. by Flange NPS and Class (carbon/alloy steel materials; for higher grades, consider adjusting weight using the delta-specific weight carbon/other grades)
NPS | Class 150 | Class 300 | Class 400 | Class 600 | Class 900 | Class 1500 | Class 2500 |
1/2 | 0.9 | 0.9 | 0.9 | 1.4 | 1.8 | 1.8 | 3.6 |
3/4 | 0.9 | 1.4 | 1.4 | 1.8 | 2.7 | 2.7 | 4.1 |
1 | 0.9 | 1.8 | 1.8 | 1.8 | 4.1 | 4.1 | 5.9 |
1¼ | 1.4 | 2.7 | 2.7 | 2.7 | 4.5 | 4.5 | 9 |
1½ | 1.8 | 3.2 | 3.6 | 3.6 | 6.3 | 6.3 | 12.6 |
2 | 2.3 | 3.6 | 4.5 | 4.5 | 11.3 | 11.3 | 18.9 |
2½ | 3.2 | 5.4 | 6.8 | 6.8 | 14.4 | 15.8 | 23.4 |
3 | 4.1 | 7.2 | 9 | 9 | 15.8 | 21.6 | 42.3 |
3½ | 5.9 | 9.5 | 13 | 13 | |||
4 | 7.7 | 12.6 | 14.9 | 18.5 | 24.3 | 32.9 | 65.7 |
5 | 9 | 16.7 | 19.8 | 30.6 | 39.2 | 63 | 109.8 |
6 | 12.2 | 22.5 | 27.5 | 38.7 | 51.8 | 72 | 170.1 |
8 | 21.2 | 36.5 | 45 | 63 | 90 | 135.9 | 259.2 |
10 | 31.5 | 55.8 | 69.8 | 103 | 130.5 | 229.5 | 480.6 |
12 | 55.4 | 83.3 | 101.7 | 132.8 | 186.8 | 348.8 | 723.6 |
14 | 63 | 112.5 | 139.5 | 170.1 | 234 | 438.8 | |
16 | 81 | 141.8 | 179.1 | 237.2 | 278.6 | 585 | |
18 | 99 | 186.3 | 225.9 | 299.3 | 396 | 787.5 | |
20 | 128.3 | 231.8 | 279.5 | 384.8 | 498.2 | 1001 | |
22 | 159.8 | 288 | 324 | 450 | |||
24 | 193.5 | 360 | 421.2 | 562.5 | 944.6 | 1631 |
BLIND FLANGE WEIGHT IN LBS.
The table shows the ASME B16.5 blind flange weights in Lbs. by Flange NPS and Class (carbon/alloy steel materials; for higher grades, consider adjusting weight using the delta-specific weight carbon/other grades)
CLASS 150 | Nominal Pipe Size | Blind Flange Weight in Lbs./unit |
½ | 2 | |
¾ | 2 | |
1 | 2 | |
1¼ | 3 | |
1½ | 4 | |
2 | 5 | |
2½ | 7 | |
3 | 9 | |
3½ | 13 | |
4 | 17 | |
5 | 20 | |
6 | 27 | |
8 | 47 | |
10 | 70 | |
12 | 123 | |
14 | 140 | |
16 | 180 | |
18 | 220 | |
20 | 285 | |
22 | 355 | |
24 | 430 | |
CLASS 300 | Nominal Pipe Size | Blind Flange Weight in Lbs./unit |
½ | 2 | |
¾ | 3 | |
1 | 4 | |
1¼ | 6 | |
1½ | 7 | |
2 | 8 | |
2½ | 12 | |
3 | 16 | |
3½ | 21 | |
4 | 28 | |
5 | 37 | |
6 | 50 | |
8 | 81 | |
10 | 124 | |
12 | 185 | |
14 | 250 | |
16 | 315 | |
18 | 414 | |
20 | 515 | |
22 | 640 | |
24 | 800 | |
CLASS 400 | Nominal Pipe Size | Blind Flange Weight in Lbs./unit |
½ | 2 | |
¾ | 3 | |
1 | 4 | |
1¼ | 6 | |
1½ | 8 | |
2 | 10 | |
2½ | 15 | |
3 | 20 | |
3½ | 29 | |
4 | 33 | |
5 | 44 | |
6 | 61 | |
8 | 100 | |
10 | 155 | |
12 | 226 | |
14 | 310 | |
16 | 398 | |
18 | 502 | |
20 | 621 | |
22 | 720 | |
24 | 936 | |
CLASS 600 | Nominal Pipe Size | Blind Flange Weight in Lbs./unit |
½ | 3 | |
¾ | 4 | |
1 | 4 | |
1¼ | 6 | |
1½ | 8 | |
2 | 10 | |
2½ | 15 | |
3 | 20 | |
3½ | 29 | |
4 | 41 | |
5 | 68 | |
6 | 86 | |
8 | 140 | |
10 | 231 | |
12 | 295 | |
14 | 378 | |
16 | 527 | |
18 | 665 | |
20 | 855 | |
22 | 1000 | |
24 | 1250 | |
CLASS 900 | Nominal Pipe Size | Blind Flange Weight in Lbs./unit |
½ | 4 | |
¾ | 6 | |
1 | 9 | |
1¼ | 10 | |
1½ | 14 | |
2 | 25 | |
2½ | 32 | |
3 | 35 | |
4 | 54 | |
5 | 87 | |
6 | 115 | |
8 | 200 | |
10 | 290 | |
12 | 415 | |
14 | 520 | |
16 | 619 | |
18 | 880 | |
20 | 1107 | |
24 | 2099 | |
CLASS 1500 | Nominal Pipe Size | Blind Flange Weight in Lbs./unit |
½ | 4 | |
¾ | 6 | |
1 | 9 | |
1¼ | 10 | |
1½ | 14 | |
2 | 25 | |
2½ | 35 | |
3 | 48 | |
4 | 73 | |
5 | 140 | |
6 | 160 | |
8 | 302 | |
10 | 510 | |
12 | 775 | |
14 | 975 | |
16 | 1300 | |
18 | 1750 | |
20 | 2225 | |
24 | 3625 | |
CLASS 2500 | Nominal Pipe Size | Blind Flange Weight in Lbs./unit |
½ | 7 | |
¾ | 10 | |
1 | 12 | |
1¼ | 18 | |
1½ | 25 | |
2 | 39 | |
2½ | 56 | |
3 | 86 | |
4 | 133 | |
5 | 223 | |
6 | 345 | |
8 | 533 | |
10 | 1025 | |
12 | 1464 |