Product Standard : AS 2492 : 2007
PEX (Cross-linked Polyethylene) is a high performance and flexible polymer pipe. It is formed by chemically bonding individual polyethylene molecules in order to enhance the physical properties and to improve the performance of the original base resin in higher temperature and pressure conditions.
PEX pipes are designed based on 50 years working life-time. It is being “cross-linked”, thus demonstrating a more superior durability and consistent performance for internal pressure at different temperatures and against times according to the reference curve as shown.
|Dimension, OS (mm)||16||20||25||32|
|Inner diameter (mm)||12||16||20||26|
|Wall thickness (mm)||2.0||2.0||2.5||3.0|
|Working pressure (PN) at 20˚C||12.5||12.5||12.5||12.5|
|Working temperature (C˚)||- A range of -45˚C to 95˚C
- Peak temperature : 110˚C (max duration of 1 hour)
- Peak temperature: 110˚C (max duration of 1 hour)
95˚C at 4 Bars / 70˚C at 8 Bars
|Coefficient of thermal
|0.130 – 0.150|
|Thermal conductivity (Wm/mK||0.41 (vs copper at 28.0)|
|Length in straight tube (M)||5||5||5||5|
Smooth Surface for Higher Flow Rate
Base on “Hazen-Williams” equation, PEX pipes have smoother surface (low roughness coefficient), hence able to increase the flow rate. And in terms of dimensional calculation, use of relatively smaller pipe inner diameter can be considered yet achieving equivalent flow rate.
|PE100 PN12.5 (5m)|