IVAR Alpex - Duo XS disc 16 x 2, 83516701

Product detailed description

This PE-AL-PEX pipe disc is commonly used in residential and commercial buildings for domestic water distribution, central heating circuits and underfloor heating systems. The material composition ensures flexibility and resistance to thermal expansion, making it suitable for installations where temperature fluctuations occur. Installers typically handle multiple runs of this pipe, especially in underfloor heating layouts where long lengths are required for even heat distribution. The 16 mm nominal size is ideal for smaller diameter applications such as individual radiators or compact heating zones.

The PE-AL-PEX structure combines a polyethylene outer layer with an aluminium reinforcement layer and a cross-linked polyethylene inner layer. This combination provides mechanical strength and thermal stability. The disc format allows for efficient storage and handling during installation. The operating temperature limit of +95°C means the pipe is appropriate for systems with standard heating temperatures. The nominal pressure rating of PN 10 indicates suitability for low-pressure applications typical of domestic heating and water supply systems.

Technical parameters

The operating temperature of +95°C is important for determining the suitability of the pipe for hot water and heating systems. The nominal pressure rating of PN 10 helps in selecting the correct pipe for low-pressure applications. The PE-AL-PEX construction provides a balance between flexibility and rigidity, which is essential for routing through walls or floors without kinking.

Installation and connection

Installation involves unrolling the pipe from the disc and cutting to the required length using a pipe cutter or fine-toothed saw. The pipe should be handled carefully to avoid kinks or damage to the internal layers. Connections are made using TA, RA crimping or press fittings, depending on the system design and local standards. The crimping process requires a compatible tool and fitting to compress the ring and secure the connection. When using press fittings, a dedicated press tool is needed to form a reliable joint.

Before connecting, ensure the pipe ends are clean and free of burrs. Check that the fittings are compatible with the PE-AL-PEX material and that the sealing rings are intact. A common mistake is using incorrect tools or fittings, which can lead to leaks or system failure. Another issue is over-bending the pipe, which can cause deformation and reduce flow efficiency. Always verify the alignment of the fittings before final tightening.

Compatibility and accessories

This PE-AL-PEX pipe is compatible with standard domestic and heating systems that use TA, RA crimping or press fittings. It is commonly used alongside other components such as manifolds, valves and insulation materials in underfloor heating installations. To complete the system, installers should also have access to crimping tools, press tools and appropriate fittings that match the pipe’s specifications. Additional accessories may include pipe clips for securing the pipe during installation and thermal insulation for reducing heat loss in exposed sections.

Technical background for designers

The PE-AL-PEX construction consists of three distinct layers: an outer polyethylene layer for durability, a middle aluminium layer for structural support and an inner cross-linked polyethylene layer for water contact. The aluminium layer prevents oxygen diffusion, which is crucial for protecting metal components in the system from corrosion. The cross-linked polyethylene enhances the material’s resistance to high temperatures and pressure fluctuations. In underfloor heating systems, the flexibility of the pipe allows for tight loops and even spacing, ensuring uniform heat distribution across the floor surface.

Designers should consider the thermal expansion characteristics of the material when planning the layout. The pipe expands and contracts with temperature changes, so allowances should be made for movement. The integration into the system depends on the type of fittings used and the overall pressure and temperature requirements. The service life of the pipe is influenced by factors such as installation quality, correct connection methods and the absence of mechanical stress points.

Service and operation

During operation, the system should be checked periodically for signs of leakage, especially at connection points. Any visible damage to the pipe or fittings should be repaired immediately. The internal surface of the pipe remains smooth, which minimizes the risk of sediment buildup. However, regular inspection of the entire system is recommended to ensure continued performance. No specific service intervals are provided for this product, so maintenance should be carried out according to the system’s overall maintenance schedule.

Frequently asked questions

Can the IVAR Alpex - Duo XS disc 16 x 2 be used for potable water?
Yes, the pipe is suitable for potable water systems and carries a hygiene certificate for drinking water.

Is the PE-AL-PEX pipe suitable for underfloor heating applications?
Yes, the PE-AL-PEX construction is well suited for underfloor heating due to its flexibility and thermal stability.

What connection methods are supported by this pipe?
The pipe can be connected using TA or RA crimping or press fittings, depending on the system design.

What is the maximum operating temperature of this pipe?
The maximum operating temperature is +95°C, making it suitable for standard heating and hot water systems.