IVAR Alpex - Duo XS disc 16 x 2, 83516401

Product detailed description

This PE-AL-PEX pipe disc is commonly used in residential and commercial buildings for central heating, hot water distribution and underfloor heating applications. It is suited for systems requiring flexibility and long-term thermal stability. Installers working on heating circuits, radiator loops or underfloor heating layouts will find this pipe suitable for both new builds and renovations. The 16 mm nominal diameter makes it ideal for smaller-scale systems or branch circuits, where space is limited but performance remains critical.

The pipe is supplied in a 100 m coil format, which allows for efficient handling and minimises waste during installation. The PE-AL-PEX construction combines the benefits of polyethylene layers with an aluminium core, ensuring good thermal conductivity and resistance to expansion. This makes the pipe particularly well-suited for closed-loop systems where dimensional stability is important. The PN 10 pressure rating ensures compatibility with standard domestic and light commercial heating and plumbing pressures.

Technical parameters

Material	polyethylene
Operating temperature	+95 °C
Manufacturer	Franskische
Nominal pressure	PN 10
Pipe type	PE-AL-PEX
Weight	0.102 kg
Code	83516401
Brand	IVAR

Installation and connection

This PE-AL-PEX pipe is typically joined using TA or RA crimping tools or press fittings. Prior to installation, ensure that all fittings and tools are compatible with the PE-AL-PEX material. The 16 mm nominal diameter requires appropriate ferrules and crimp rings for secure connections. When crimping, verify that the tool is correctly aligned and that the crimp mark is evenly applied around the circumference. Common mistakes include over-crimping, which can damage the pipe, or under-crimping, which can lead to leaks. Always inspect the crimped joint visually and, where possible, perform a pressure test after installation.

Compatibility and accessories

The PE-AL-PEX pipe is suitable for integration with standard heating and plumbing systems that support press or crimp fittings. For TA or RA crimping, appropriate ferrules and crimping tools must be used. Press fittings require a dedicated press tool and compatible fittings. Installers should also consider the need for insulation, especially in unheated spaces or exposed areas. Additional components such as valves, manifolds and expansion vessels may be required depending on the system design.

Technical background for designers

This PE-AL-PEX pipe consists of three layers: an outer and inner layer of polyethylene, with a cross-linked polyethylene (PEX) layer sandwiched between them and reinforced with an aluminium core. This composite structure provides good thermal conductivity while maintaining the flexibility of plastic pipes. The cross-linked polyethylene improves resistance to high temperatures and pressure fluctuations, making it suitable for long-term use in heating systems. The material is also resistant to chemical corrosion, which enhances its durability in water-based systems. The PE-AL-PEX construction allows for minimal thermal expansion, reducing the risk of stress-related failures in the system.

Service and operation

Regular visual inspections of the joints and pipe condition are recommended during routine system checks. Any signs of leakage, discolouration or mechanical damage should be addressed immediately. No specific service intervals are provided, but the system should be tested periodically for pressure integrity. Ensure that the system is properly flushed and maintained to prevent sediment buildup, which can affect flow and efficiency.

Frequently asked questions

Can this PE-AL-PEX pipe be used for potable water?
Yes, the pipe is certified for use with drinking water and meets relevant hygiene standards.

Is the PE-AL-PEX pipe suitable for underfloor heating?
Yes, the material and construction make it suitable for underfloor heating systems due to its flexibility and thermal stability.

What type of fittings are compatible with this pipe?
It is compatible with TA or RA crimping tools and press fittings, provided the correct ferrules or adapters are used.

Can the pipe be cut to length during installation?
Yes, the pipe can be cut to the required length using a pipe cutter or fine-toothed saw. Always ensure the cut ends are clean and free of burrs before fitting.