DN and PN Meaning in Valves Explained

industrial-valve-dn50-pn16-marking-example.

Quick Overview Understanding DN and PN in valves is essential for engineers and buyers selecting industrial valves. DN (Diameter Nominal) represents the nominal size classification of a valve, while PN (Pressure Nominal) indicates the pressure rating a valve can safely withstand. Together, DN and PN valve specifications ensure compatibility with piping systems and safe operation […]