What is the max working pressure for ansi class 900 flange?

The maximum working pressure for an ANSI Class 900 flange varies depending on the temperature of the fluid being transported. At a standard temperature of 100°F (38°C), the maximum working pressure is typically around 1,480 psi (pounds per square inch). However, this value decreases at higher temperatures, so it's essential to consult a pressure-temperature rating chart for precise figures. Always ensure compliance with relevant codes and standards for specific applications.