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ASME B16.5 Flange Pressure Classes Explained

ASME B16.5 Flange Pressure Classes Explained

ASME B16.5 Pressure Classes

 

ASME B16.5 defines flange dimensions and pressure ratings.

 

Common classes include:

 

Class 150

Class 300

Class 600

Class 900

Class 1500

Class 2500

 

Higher class numbers generally indicate higher pressure capability.

 

Choosing the correct class depends on operating pressure, temperature, and fluid type.