PN to ANSI Class Conversion Table in Industrial Valves

In the piping and industrial valve industry, understanding and converting between pressure standards is essential for selecting the right equipment. The two most widely used standards today are PN (Pressure Nominal) and ANSI Class.

So, how do you convert PN to ANSI Class? Let’s explore the details with Phuc Minh Engineering Co., Ltd in this article.

What is PN?

PN (Pressure Nominal) is a nominal pressure rating defined by European standards (DIN/EN). It indicates the pressure capacity of equipment at a reference temperature (typically 20°C).

Common PN ratings:

• PN6
• PN10
• PN16
• PN25
• PN40
• PN63
• PN100

What is ANSI Class?

ANSI Class is a pressure rating system used in American standards such as ASME B16.5 and B16.34.

Common ANSI Classes:

• Class 150
• Class 300
• Class 600
• Class 900
• Class 1500
• Class 2500

PN to ANSI Class Conversion Table

Below is a commonly used approximate conversion table:

👉 Important Note: This conversion is for reference only. Actual pressure ratings may vary depending on:

• Operating temperature
• Material of construction
• Specific design standards

Why Convert PN to ANSI Class?

In real-world applications, equipment often follows different standards:

• European valves: use PN
• American or Japanese valves: use ANSI Class

Conversion helps to:

• Select the correct replacement valve
• Ensure system safety
• Avoid design and installation errors

PN vs ANSI Class Comparison

Practical Applications

• Selecting appropriate industrial valves
• Designing piping systems according to international standards
• Replacing equipment across different standards
• Engineering consulting for oil & gas, power plants, and chemical industries

Important Considerations

• Do not assume exact 1:1 conversion
• Always check technical datasheets
• Follow the original system standard whenever possible
• Consult engineers or suppliers when needed

Reliable Industrial Valve Supplier

If you need consultation on selecting valves based on PN or ANSI Class, please contact:

Phuc Minh Engineering Co., Ltd
🌐 Website: pm-e.vn
📧 Email: info@pm-e.vn
📱 Hotline: +84 907 450 506 – +84 902 720 814 – +84 979 737 351

👉 We provide:

• Industrial valves with multiple standards (DIN, ANSI, JIS)
• Genuine products with full CO & CQ documentation
• Professional technical consultation
• Competitive pricing for projects

Conclusion

Understanding the PN to ANSI Class conversion table helps you select the right equipment, ensure safety, and optimize costs. However, since this is an approximate conversion, always verify detailed technical specifications before application.