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PE (PolyEthylene) Pipes - Pressure vs. Temperature Ratings

Polyethylene pipe temperature and maximum operating pressure.

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The maximum operating pressure of a PEH pipe depends on the temperature of fluid and pipe.

PN ratings are based on temperature 20^oC.

Temperature (^oC)	Maximum Operating Pressure (bar)
Temperature (^oC)	PN 6	PN 10	PN 16
20	6.0	10.0	16.0
30	3.2	8.0	13.0
40	2.0	6.0	11.0
50	1.6	4.0	8.0
60	1.0	3.2	6.0

PEH and PE pipe - temperature and maximum operating pressure diagram

Example - Cold and Hot water Supply

The pressure in a water supply system to an area is 4 bar. The cold water temperature will never exceed 20^oC and the hot water distributed within the area with PEH pipes will never exceed temperature 50^oC.

From the table above pipes with PN 6 will do for the cold water. For the hot water PEH pipes PN 16 should be selected.

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Related Topics

Pressure Ratings - Pressure ratings of pipes and tubes and their fittings - carbon steel , stainless steel, plastic, copper and more.

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Engineering ToolBox, (2006). PE (PolyEthylene) Pipes - Pressure vs. Temperature Ratings. [online] Available at: https://www.engineeringtoolbox.com/pe-temperature-pressure-rating-d_327.html [Accessed Day Mo. Year].

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