3-layers pipe PE-Xa 3 with EVOH barrier

IVAR PE-Xa 3 is the cross- linked polyethylene pipe PE- Xa suitable for the transport of drinking water and for the implementation of heating and cooling systems. It is used in residential buildings, hospitals, schools, hotels, offices, shopping centers and industries, both new and under renovation. Cross-linking of IVAR PE-Xa 3 is produced by the “peroxide method” (also known as “Engel method” or “type A”); the minimum cross-linking level is 70%, as required by the UNI EN ISO 15875- 2 standard. Cross- linking of the pipe is performed during the extrusion phase, without the need of further treatments. This guarantees cross-linking uniformity in each section of the pipe, with detectable differences of less than 0.5%.

IVAR PE-Xa 3 pipe is made of three layers: inner layer made of high density PE- Xa, intermediate layer made of adhesive polyethylene, outer layer made of EVOH (Ethylene Vinyl Alcohol).

EVOH is a barrier with a thickness of some tens of microns that makes the pipe impermeable to oxygen, reducing the risk of corrosion of metal components of the system and limiting algae and bacteria proliferation.



  • Hydraulic installations, both civil and industrial
  • Radiant heating/cooling systems
  • Radiator heating systems
  • Ice/snow melting systems



  • High flexibility: easy to bend by hand (without special tools), saving fittings and installation time.
  • High temperature resistance: it can work at temperatures up to 90 °C according to the UNI EN ISO 15875 standard.
  • Expected lifespan of over 50 years: cross-linking and high build quality guarantee over 50 years of pipe use.
  • Low pressure drops: the extremely smooth inner surface contrasts the formation of limescale deposits and reduces pressure drops.
  • Lightweight: it weighs 7 times less than copper and 13 times less than iron on equivalent diameters.
  • Non-toxic materials: certified materials for the transport of drinking water that do not affect water organoleptic characteristics.
  • Thermal insulation: thermal conductivity of polyethylene is hundreds of times less than metals.
  • Sound insulation: the elasticity of polyethylene facilitates the absorption of vibrations and therefore reduces noise transmission.
  • Ideal for earthquake zone: it supports greater stress than metal pipes thanks to its elasticity.
  • Thermal memory: it recovers the original shape when heated with hot air.
  • Resistance to corrosion, to building materials and to major chemical compounds: pipes can be installed underfloor.
  • Oxygen barrier: it reduces the risk of corrosion of metal components of the system and limits algae and bacteria proliferation