What is the meaning of PN in piping?

Pressure rating is described in a number of ways – for example by a pressure Class “A”, “B”, ”C”, etc or by nominal pressure as PN10, PN16 etc (PN comes from the French for Nominal Pressure, which is the official pressure rating rather than the actual pressure capability of an individual pipe).
A.

What is the PN rating?

150. 260. 420. * "Pression Nominal" is the French equivalent of Pressure Nominal. "Pression Nominal" is the rating designator followed by a designation number indicating the approximate pressure rating in bars.
  • What is meant by class in piping?

    Pipe class is developed considering Operating Pressure, temperature and corrosive environment. Different material specifications are segregated in separate “Piping Class”. This pipe class is also included in the line number so that field construction engineer can easily identify the material required.
  • What is the meaning of pressure rating?

    The pressure rating is the maximum pressure a pipe, fitting or valve should be capable of withstanding in a normal conditions. Also known as maximum allowable working pressure (MAWP), a pressure rating lets an engineer or plumber determine which part will work best with the system being built.
  • What is the nominal pressure?

    Nominal pressure is a dimensionless marking of maximum operating pressure at ambient temperature, preceded with PN or CL symbol. Control valves are executed in following nominal pressures: PN6; 10; 16; 25; 40; 63; 100; 160; 250; 320; 400 per PN-EN 1092-1, DIN2548, DIN2549, DIN2550, DIN2551, PN-H-74306, PN-H-74307.
B.

What is PN flange standard?

'PN' stands for Pressure Nominale and prefixes the pressure rating, e.g. a PN16 flange is designed to operate up to 16 bar. Typical ratings include PN6, PN10, PN16, PN25, PN40, PN64, PN100. The American ANSI standard refers instead to a pressure / temperature rating termed 'Class'.
  • What is the meaning of pressure rating?

    The pressure rating is the maximum pressure a pipe, fitting or valve should be capable of withstanding in a normal conditions. Also known as maximum allowable working pressure (MAWP), a pressure rating lets an engineer or plumber determine which part will work best with the system being built.
  • What does dn stand for in pipes?

    Diameter Nominal
  • What is the nominal pressure?

    Nominal pressure is a dimensionless marking of maximum operating pressure at ambient temperature, preceded with PN or CL symbol. Control valves are executed in following nominal pressures: PN6; 10; 16; 25; 40; 63; 100; 160; 250; 320; 400 per PN-EN 1092-1, DIN2548, DIN2549, DIN2550, DIN2551, PN-H-74306, PN-H-74307.

Updated: 13th October 2018

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