IVAR Alpex - Duo XS rod 16 x 2, 83516001

Product detailed description

This composite pipe is commonly used in residential and commercial buildings for central heating and domestic hot water supply. It is particularly suited for underfloor heating systems, where thermal efficiency and long-term stability are essential. Installers working on low-pressure heating circuits will find this pipe suitable for both new builds and renovation projects. The PE-AL-PEX construction provides resistance to thermal expansion and ensures minimal heat loss over long pipe runs.

The PE-AL-PEX design combines flexibility with structural rigidity, making it ideal for installations requiring bends and curves without the need for additional fittings. It is commonly integrated into radiant floor heating systems, where even heat distribution is required. The material composition allows for installation in both dry and humid environments, provided the system is properly sealed and insulated.

Technical parameters

Material	polyethylene
Operating temperature	+95 °C
Manufacturer	Franskische
Nominal pressure	PN 10
Pipe type	PE-AL-PEX
Weight	0.109 kg
Code	83516001
Brand	IVAR

The operating temperature limit of +95°C means this pipe is suitable for standard central heating and hot water systems. The PN 10 pressure rating indicates it is appropriate for low-pressure applications such as underfloor heating and radiator circuits. These parameters help determine correct pipe sizing based on flow rate and system pressure requirements.

Installation and connection

This PE-AL-PEX pipe is joined using TA or RA crimping tools or press fittings. Before installation, ensure the pipe is free of kinks and that all connections are made to manufacturer specifications. The internal diameter should be matched to the required flow rate and system pressure. Common mistakes include using incorrect crimping sleeves or applying uneven pressure during fitting installation, which can lead to leaks or reduced system efficiency. Always verify that the crimping tool is correctly aligned with the fitting before securing.

Compatibility and accessories

This pipe is compatible with standard press and crimp fittings designed for PE-AL-PEX. For secure connections, ensure that the correct type of sleeve or ferrule is used for the fitting method. Additional components such as valves, expansion vessels and insulation materials may be required depending on the system configuration. Installers should also consider the need for thermal expansion compensation in longer runs, particularly in underfloor heating applications.

Technical background for designers

The PE-AL-PEX construction consists of a polyethylene outer and inner layer with an aluminium reinforcement. This combination prevents oxygen diffusion into the system and reduces thermal expansion. The material is particularly effective in closed-loop systems where long-term performance and thermal conductivity are important. The integration of this pipe into a system depends on accurate calculation of flow rates and pressure drops. The presence of the aluminium layer also helps maintain a consistent thermal gradient along the pipe length, improving overall system efficiency.

Service and operation

Regular visual inspection of the joints and pipe surface is recommended to detect signs of wear or leakage. Any damaged sections should be replaced immediately to prevent further system failure. As the pipe is designed for closed-loop systems, it is generally not subject to frequent maintenance beyond initial installation checks. Ensure that the system is properly flushed and tested after installation to remove any particulate matter that could affect long-term performance.

Frequently asked questions

Can this pipe be used in a radiant floor heating system?
Yes, it is suitable for radiant floor heating systems due to its thermal stability and resistance to expansion.

Is it compatible with press fittings?
Yes, it can be connected using press fittings according to the manufacturer's instructions.

What is the maximum operating temperature?
It is rated for up to +95°C, making it suitable for standard heating and hot water applications.

Can it be used for drinking water supply?
Yes, it is certified for use in drinking water systems and carries a hygiene certificate for potable water.