Valve Pressure: PN to Class

Piping Class Ratings based on the ASME B16.5 – Pipe Flanges and Flanged Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard – class and the corresponding ISO 7005 PN (Pression Nominal*) ratings:

Class 800 to PN130 for valves.

ANSI Class(LB) 150 300 400 600 900 1500 2500
DIN PN (Bar) 20 50 64 100 150 250 420

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