PE pipes are produced in different pressure grades - PN grades - indicating the pressure in bars the pipe can support with water at 20 oC.
The pressure grades available according to European standards are
PN 2.5 - max pressure 2.5 bar
PN 4 - max pressure 4 bar
PN 6 - max pressure 6 bar
PN 10 - max pressure 10 bar
PN 16 - max pressure 16 bar
1 bar = 105 Pa (N/m2) = 0.1 N/mm2 = 10.197 kp/m2 = 10.20 m H2O = 0.9869 atm = 14.50 psi (lbf/in2) = 106 dyn/cm2 = 750 mmHg
European standards and available PEH pipes:
