ANSI / ASME B16.5 Class 2500 Lap Joint Flange Dimensions
Lap Joint flanges are commonly used in low-pressure, non-corrosive medium systems, such as in industries like food processing, pharmaceuticals, and water treatment.
ANSI / ASME B16.5 Class 2500 Lap Joint Flange
Class 2500 Lap Joint Flange Dimensions in Inch/lbs
Class 2500 Lap Joint Flange Dimensions in mm/kg
Class 2500 Lap Joint Flange Dimensions in Inch/lbs
| Nominal Pipe Size | Outside Diameter (O) | Thickness (T) | Length Thru Hub (Y) | Hub Diameter (X) | Radius (r) | Bore (B) | Approximate Weight (lbs) | Bolt Circle (C) | Number of Holes | Diameter of Holes |
| 1/2 | 5.25 | 1.19 | 1.56 | 1.69 | 0.13 | 0.90 | 7 | 3.50 | 4 | 0.88 |
| 3/4 | 5.50 | 1.25 | 1.69 | 2.00 | 0.13 | 1.11 | 8 | 3.75 | 4 | 0.88 |
| 1 | 6.25 | 1.38 | 1.88 | 2.25 | 0.13 | 1.38 | 11 | 4.25 | 4 | 1.00 |
| 1 1/4 | 7.25 | 1.50 | 2.06 | 2.88 | 0.19 | 1.72 | 16 | 5.13 | 4 | 1.13 |
| 1 1/2 | 8.00 | 1.75 | 2.38 | 3.13 | 0.25 | 1.97 | 22 | 5.75 | 4 | 1.25 |
| 2 | 9.25 | 2.00 | 2.75 | 3.75 | 0.31 | 2.46 | 38 | 6.75 | 8 | 1.13 |
| 2 1/2 | 10.50 | 2.25 | 3.13 | 4.50 | 0.31 | 2.97 | 55 | 7.75 | 8 | 1.25 |
| 3 | 12.00 | 2.63 | 3.63 | 5.25 | 0.38 | 3.60 | 83 | 9.00 | 8 | 1.38 |
| 4 | 14.00 | 3.00 | 4.25 | 6.50 | 0.38 | 4.60 | 125 | 10.75 | 8 | 1.63 |
| 5 | 16.50 | 3.63 | 5.13 | 8.00 | 0.44 | 5.69 | 210 | 12.75 | 8 | 1.88 |
| 6 | 19.00 | 4.25 | 6.00 | 9.25 | 0.44 | 6.75 | 325 | 14.50 | 8 | 2.13 |
| 8 | 21.75 | 5.00 | 7.00 | 12.00 | 0.50 | 8.75 | 485 | 17.25 | 12 | 2.13 |
| 10 | 26.50 | 6.50 | 9.00 | 14.75 | 0.50 | 10.92 | 930 | 21.25 | 12 | 2.63 |
| 12 | 30.00 | 7.25 | 10.00 | 17.38 | 0.50 | 12.92 | 1100 | 24.38 | 12 | 2.88 |
Class 2500 Lap Joint Flange Dimensions in mm/kg
| Nominal Pipe Size | Outside Diameter (O) | Thickness (T) | Length Thru Hub (Y) | Hub Diameter (X) | Radius (r) | Bore (B) | Approximate Weight (Kg) | Bolt Circle (C) | Number of Holes | Diameter of Holes |
| 1/2 | 133.35 | 30.23 | 39.62 | 42.93 | 3.30 | 22.86 | 3.18 | 88.90 | 4 | 22.35 |
| 3/4 | 139.70 | 31.75 | 42.93 | 50.80 | 3.30 | 28.19 | 3.63 | 95.25 | 5 | 22.35 |
| 1 | 158.75 | 35.05 | 47.75 | 57.15 | 3.30 | 35.05 | 4.99 | 107.95 | 6 | 25.40 |
| 1 1/4 | 184.15 | 38.10 | 52.32 | 73.15 | 4.83 | 43.69 | 7.26 | 130.30 | 7 | 28.70 |
| 1 1/2 | 203.20 | 44.45 | 60.45 | 79.50 | 6.35 | 50.04 | 9.98 | 146.05 | 8 | 31.75 |
| 2 | 234.95 | 50.80 | 69.85 | 95.25 | 7.87 | 62.48 | 17.24 | 171.45 | 9 | 28.70 |
| 2 1/2 | 266.70 | 57.15 | 79.50 | 114.30 | 7.87 | 75.44 | 24.95 | 196.85 | 10 | 31.75 |
| 3 | 304.80 | 66.80 | 92.20 | 133.35 | 9.65 | 91.44 | 37.65 | 228.60 | 11 | 35.05 |
| 4 | 355.60 | 76.20 | 107.95 | 165.10 | 9.65 | 116.84 | 56.70 | 273.05 | 12 | 41.40 |
| 5 | 419.10 | 92.20 | 130.30 | 203.20 | 11.18 | 144.53 | 95.25 | 323.85 | 13 | 47.75 |
| 6 | 482.60 | 107.95 | 152.40 | 234.95 | 11.18 | 171.45 | 147.42 | 368.30 | 14 | 54.10 |
| 8 | 552.45 | 127.00 | 177.80 | 304.80 | 12.70 | 222.25 | 219.99 | 438.15 | 15 | 54.10 |
| 10 | 673.10 | 165.10 | 228.60 | 374.65 | 12.70 | 277.37 | 421.84 | 539.75 | 16 | 66.80 |
| 12 | 762.00 | 184.15 | 254.00 | 441.45 | 12.70 | 328.17 | 498.95 | 619.25 | 17 | 73.15 |
The ANSI / ASME B16.5 Class 2500 Lap Joint Flange is a high-pressure pipe flange designed for systems where ease of alignment and disassembly are critical. This flange is used with a stub end (a short piece of pipe welded to the main pipe) and allows the flange to be freely rotated around the pipe for easier installation.
For more technical support, please contact SSM.
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