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Oxygen barrier piping

Designing and manufacturing innovative systems that provide added value, guaranteeing a sustainable future.

Plastic pipes and oxygen

Plastic piping systems are characterised by a certain degree of gas permeability.

Plastics, formed by long hydrocarbon molecules linked together, have cleavages throughout their physical structure. Their size allows oxygen molecules to pass through, so that a plastic tube exposed to the atmosphere is subject to diffusion of oxygen from the air from the outside to the inside. This permeability varies depending on the installation conditions (temperature and pressure).

A plastic tube is subject to diffusion of oxygen from the air from the outside to the inside.

What are the problems in closed circuits?

Breakdowns or failures in water-based installations are caused by various factors that are well known to professionals in the sector.

Oxidation of components

Sludge formation (magnetite)

Biofilm formation

Current problems with oxygen barrier systems

Current systems with an anti-oxygen barrier using EVOH or aluminium have the following problems:

In PPR systems it is necessary to remove the barrier layer for welding.

The product is no longer recyclable and sustainable.

ABN anti-oxygen barrier

Our oxygen impermeable pipe systems maintain recyclability and sustainability by not including additional layers.

This new solution offers 2 main advantages:

It is not necessary to carry out layer removal processes for welding.

The product maintains its recyclability and sustainability.

ABN productswith anti-oxygen barrier:


These systems have been tested for oxygen permeability according to DIN 4726 in the German laboratory MPA NRW, with excellent results.

The pipes have been tested at 40 ºCand 80 ºC.

Oxygen permeation test

40 ºC<0,004 mg/m2.d0,32 mg/m2.d
80 ºC1,955 mg/m2.d3,6 mg/m2.d

What differentiates us

No EVOH layer

Without EVOH layer (etylen-vinyl-glycol), so they can be welding by any procedure without having to remove it.

Aluminium free

The aluminium layer does not need to be removed, which avoids possible failures in the welding process.

We maintain recyclability

No EVOH layer, no aluminium, no adhesives means that the recyclability is maintained.

What benefits do we provide?

Prevents sludge, sludge and bacteria formation

Oxygen inside the hydraulic circuits leads to the formation of sludge, sludge and bacteria, causing damage to other components of the installation, such as valves, filters, boilers, etc.

Increases performance and efficiency

Corrosion of the water (sludge formation) leads to increased energy consumption.

Maintains recyclability

In contrast to other pipes on the market, the fact it doesn´t have an EVOH layer or Alumino layer means that they can be 100% recycled.

Avoid investment in specific tools

In these systems, the absence of a physical barrier layer does not require the use of specific tools for their removal.

Reduction of processes and manpower

The time required to remove EVOH or aluminium layers is eliminated.

Avoids possible errors in the welding process

Excessive peeling and non-removal of the barrier layer is avoided, ensuring thermofusion.

Application sites


Air conditioning


Fire fighting