ASME B16.5 Class 150 Flange Dimensions
This table provides essential dimensional data for ASME B16.5 Class 150 flanges, including Weld Neck, Slip-On, and Blind types. Adhering to these standards ensures interchangeability and safe operation in various piping systems. This data is crucial for engineers and designers in selecting appropriate flanges for low-pressure applications.
Class 150 Flange Dimensions
| DN | Nominal Pipe Size (NPS) | OD (mm) | OD (in) | Flange Thickness (t) (mm) | Bolt Circle Diameter (BCD) (mm) | No. of Bolts | Bolt Diameter |
|---|---|---|---|---|---|---|---|
| 15 | 1/2" | 89 | 3.5 | 11.2 | 60.3 | 4 | M12 |
| 25 | 1" | 108 | 4.25 | 12.7 | 79.4 | 4 | M12 |
| 50 | 2" | 152 | 6 | 15.9 | 120.7 | 4 | M16 |
| 80 | 3" | 190.5 | 7.5 | 17.5 | 152.4 | 4 | M16 |
| 100 | 4" | 228.6 | 9 | 19.0 | 190.5 | 8 | M16 |
| 150 | 6" | 279.4 | 11 | 22.2 | 241.3 | 8 | M19 |
| 200 | 8" | 342.9 | 13.5 | 23.8 | 298.5 | 8 | M19 |
| 250 | 10" | 406.4 | 16 | 25.4 | 362.0 | 12 | M22 |
| 300 | 12" | 482.6 | 19 | 28.6 | 431.8 | 12 | M22 |
Note: Dimensions are for Raised Face (RF) flanges. Always refer to the latest ASME B16.5 standard for critical applications. These flanges are typically used in low-pressure, non-severe service conditions across various industries.
Bolt Circle Diameter vs. DN (ASME B16.5 Class 150)
Caption: This bar chart visually represents the relationship between Nominal Diameter (DN) and Bolt Circle Diameter (BCD) for ASME B16.5 Class 150 flanges. It highlights the increase in BCD with larger DN sizes, crucial for bolt pattern alignment.