IVAR Alpex - Duo XS rod 32 x 3, 83532001

Product detailed description

This PE-AL-PEX composite pipe is commonly used in residential and commercial buildings for hot water distribution, underfloor heating, and heating circuit connections. It is often found in modern HVAC systems where thermal stability and long-term durability are essential. Installers working on central heating systems and underfloor heating circuits will benefit from the pipe’s mechanical strength and resistance to thermal expansion.

The PE-AL-PEX composition combines the flexibility of cross-linked polyethylene with the structural rigidity of an aluminium layer, making it ideal for applications requiring both pressure resistance and dimensional stability. This makes it particularly suited for closed-loop systems such as radiant floor heating and hot water circulation loops.

Technical parameters

Installation and connection

The pipe can be joined using TA or RA crimping systems, or press-fit fittings. Before installation, ensure the pipe length corresponds to the required run, and cut cleanly with a suitable pipe cutter. After cutting, deburr the ends carefully to avoid damaging the sealing surfaces. Crimping or pressing must be done using manufacturer-approved tools calibrated for the specific fitting type. During installation, avoid sharp bends and maintain a minimum bending radius of 8 times the outer diameter to prevent kinking. Always verify the alignment of the pipe and fitting prior to final compression.

Common errors include using incorrect compression tools, improper seating of the fitting, and failure to clean the pipe end. These can lead to leaks or reduced system efficiency. Always perform a pressure test after installation to confirm all joints are sealed correctly.

Compatibility and accessories

This PE-AL-PEX pipe is compatible with standard TA and RA crimping systems, as well as press-fit fittings from various manufacturers. When ordering, ensure that all necessary fittings and compression tools are available for the intended connection method. Accessories such as elbows, couplings, and valves must be selected according to the system design and flow requirements. As this pipe is supplied in 5-metre lengths, longer runs require additional joints and fittings.

Technical background for designers

The PE-AL-PEX composite consists of three layers: an inner and outer layer of cross-linked polyethylene (PEX) and a middle layer of aluminium. The PE-AL-PEX pipe is dimensionally stable, reducing the need for expansion compensation compared to fully flexible PEX piping. For underfloor heating systems, the high thermal conductivity supports even heat distribution across the floor surface.

Designers should account for the linear expansion coefficient when planning large-scale installations. The presence of the aluminium layer reduces overall expansion, which simplifies layout planning and reduces the need for expansion loops or bends. Long-term performance depends on maintaining the specified operating parameters and avoiding exposure to aggressive media outside the manufacturer’s recommendations.

Service and operation

Under normal operating conditions and within specified parameters, this pipe requires minimal maintenance. Periodic visual inspections of the joints and pipe condition are recommended to identify potential issues early. If the system is part of a larger network, regular pressure tests and checks for leaks are advisable. No scheduled service intervals are specified for this product, but any signs of degradation—such as discolouration or deformation—should prompt further investigation.

Frequently asked questions

Can IVAR Alpex - Duo XS 32 x 3 be used for underfloor heating?
Yes, the pipe is suitable for underfloor heating systems due to its thermal conductivity and dimensional stability. It supports efficient heat transfer and maintains shape under varying loads.

What type of fittings are compatible with this pipe?
The pipe can be connected using TA or RA crimping systems, or press-fit fittings. Ensure all fittings and tools are manufacturer-approved for the specific connection method.

Is this pipe suitable for hot water supply?
Yes, the maximum operating temperature of +95°C allows use in domestic hot water supply systems. Maintain pressure and temperature within the specified limits for safe operation.

How should I cut and prepare the pipe for connection?
Cut the pipe cleanly using a suitable pipe cutter. Deburr the edges and ensure the end is straight and free of defects before attaching fittings. Always follow the manufacturer’s guidelines for preparation and connection methods.