Monday, 31 August 2009

What does PN stands for, and what does it mean to be PN-16, PN-12 or PN-20?


PN stands for Nominal Pressure, it is numerical designation used for reference purpose related to mechanical characteristics of the component of a piping system.

PN-25 Pipe means the pipe can withstand pressure Up to 25 bars

  • PN 10 / 12.5 - Cold water distribution and floor heating systems
  • PN 16 - Higher pressure cold water distribution and Domestic Hot Water systems at lower Pressures
  • PN 20 - Hot water distribution systems, central
  • PN-25 –High pressure Hot water Distribution for longer period

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