Intro
Pipe flanges are a crucial component in plumbing and piping systems, used to connect pipes, valves, and other equipment. However, selecting the correct flange size can be a daunting task, especially for those new to the industry. A printable flange size chart can be a valuable resource for easy reference, ensuring that you get the right fit every time.
The importance of accurate flange sizing cannot be overstated. Incorrect sizing can lead to leaks, reduced system performance, and even safety hazards. With a printable flange size chart, you can quickly and easily verify the dimensions of various flange types, including ASME, DIN, and JIS standards.
Understanding Flange Sizes
Flange sizes are typically measured in inches or millimeters, and they can vary significantly depending on the type of flange and the application. Here are some key factors to consider when selecting a flange size:
- Nominal Pipe Size (NPS): This refers to the diameter of the pipe, which is usually measured in inches.
- Flange Class: This indicates the pressure rating of the flange, with higher classes corresponding to higher pressure ratings.
- Flange Type: There are several types of flanges, including weld neck, slip-on, and threaded flanges, each with its own unique characteristics.
ASME Flange Sizes
The American Society of Mechanical Engineers (ASME) is a leading authority on pipe flanges, and their standards are widely adopted across the industry. Here are some common ASME flange sizes:
- 1/2" NPS: 3.5" (89 mm) outside diameter, 1.38" (35 mm) bolt circle diameter
- 1" NPS: 4.25" (108 mm) outside diameter, 2.75" (70 mm) bolt circle diameter
- 2" NPS: 6" (152 mm) outside diameter, 4.25" (108 mm) bolt circle diameter
DIN Flange Sizes
The Deutsches Institut für Normung (DIN) is a German standards organization that also publishes flange size standards. Here are some common DIN flange sizes:
- DN15: 20 mm (0.79") outside diameter, 12 mm (0.47") bolt circle diameter
- DN20: 25 mm (0.98") outside diameter, 15 mm (0.59") bolt circle diameter
- DN25: 32 mm (1.26") outside diameter, 20 mm (0.79") bolt circle diameter
JIS Flange Sizes
The Japanese Industrial Standards (JIS) organization also publishes flange size standards. Here are some common JIS flange sizes:
- 10A: 25 mm (0.98") outside diameter, 15 mm (0.59") bolt circle diameter
- 15A: 32 mm (1.26") outside diameter, 20 mm (0.79") bolt circle diameter
- 20A: 40 mm (1.57") outside diameter, 25 mm (0.98") bolt circle diameter
Printable Flange Size Chart
A printable flange size chart can be a valuable resource for anyone working with pipe flanges. Here is a sample chart that includes some common flange sizes:
| NPS | Outside Diameter | Bolt Circle Diameter | Flange Class |
|---|---|---|---|
| 1/2" | 3.5" (89 mm) | 1.38" (35 mm) | 150 |
| 1" | 4.25" (108 mm) | 2.75" (70 mm) | 150 |
| 2" | 6" (152 mm) | 4.25" (108 mm) | 150 |
| DN15 | 20 mm (0.79") | 12 mm (0.47") | PN10 |
| DN20 | 25 mm (0.98") | 15 mm (0.59") | PN10 |
| DN25 | 32 mm (1.26") | 20 mm (0.79") | PN10 |
| 10A | 25 mm (0.98") | 15 mm (0.59") | 10K |
| 15A | 32 mm (1.26") | 20 mm (0.79") | 10K |
| 20A | 40 mm (1.57") | 25 mm (0.98") | 10K |
Conclusion
Selecting the correct flange size is crucial for ensuring the integrity and safety of piping systems. A printable flange size chart can be a valuable resource for easy reference, providing quick access to common flange sizes and dimensions.
By understanding the different types of flanges and their corresponding sizes, you can make informed decisions and avoid costly mistakes. Whether you're a seasoned professional or just starting out, a printable flange size chart is an essential tool to have in your toolkit.
Flange Size Chart Image Gallery
We hope this article has provided you with valuable insights and information on printable flange size charts. If you have any questions or comments, please don't hesitate to reach out. Share this article with your colleagues and friends to help them stay informed about pipe flanges and piping systems.