Flanges - Ratings in Classes and Pressure Numbers (PN)

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Engineering ToolBox > Flanges - Ratings in Classes and Pressure Numbers (PN)

Pressure numbers (PN) compared to flange class designations

Flange Class	150	300	400	600	900	1500	2500
Flange Pressure Number, PN	20	50	68	100	150	250	420

Related Topics

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Piping Codes and Standards Piping codes and standards - ASME, ANSI, ASTM, AGA, API, AWWA, BS, ISO, DIN and more...
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