ANSI Class vs PN is a common comparison used when selecting industrial valves, flanges, and pipeline components. ANSI Class is mainly used in ASME/ANSI standards, while PN, or Nominal Pressure, is commonly used in EN/DIN standards. This table provides a general reference between ANSI pressure classes, nominal pressure in MPa, and PN ratings to help engineers and buyers compare pressure ratings more easily.
Pressure Class and Nominal Pressure Comparison Table
| ANSI Class | Nominal Pressure (MPa) | PN Rating |
|---|---|---|
| Class 150 | 0.6 MPa / 1.0 MPa / 1.6 MPa / 2.0 MPa | PN6 / PN10 / PN16 / PN20 |
| Class 300 | 2.5 MPa / 4.0 MPa / 5.0 MPa | PN25 / PN40 / PN50 |
| Class 400 | 6.4 MPa | PN64 |
| Class 600 | 10 MPa | PN100 |
| Class 900 | 15 MPa | PN150 |
| Class 1500 | 25 MPa | PN250 |
| Class 2500 | 42 MPa | PN420 |
Note: This table is for general reference only. Actual pressure ratings may vary depending on valve material, design standard, working temperature, and application conditions.