IVAR Alpex - Duo XS rod 20 x 2, 83520001

Product detailed description

IVAR Alpex - Duo XS rods are commonly used in residential and commercial buildings for central heating systems, domestic hot water supply and underfloor heating installations. These pipes are typically found in radiant floor systems, radiator circuits and hot water manifolds, where reliable thermal performance and long-term durability are essential. Installers working in these applications benefit from the mechanical strength and thermal resistance of the PE-AL-PEX composite structure, which supports stable operation at elevated temperatures and moderate pressures. The 20 x 2 dimensions make it suitable for standard pipe routing and insulation requirements in both new builds and renovation projects.

The PE-AL-PEX construction combines the flexibility of polyethylene with the structural rigidity of an aluminium layer, ensuring dimensional stability and resistance to thermal expansion. This makes the pipe suitable for both fixed and semi-flexible layouts. The nominal pressure rating and temperature limit are critical for system design, ensuring compatibility with standard heating components such as valves, radiators and heat emitters. The 5 m rod length is ideal for pre-cutting and installation in tight spaces or where precise layout is required.

Technical parameters

Material	polyethylene
Operating temperature	+95 °C
Manufacturer	Franskische
Nominal pressure	PN 10
Pipe type	PE-AL-PEX
Weight	0.151 kg
Code	83520001
Brand	IVAR

The operating temperature of +95 °C and nominal pressure of PN 10 are key factors when determining suitability for specific heating applications. These parameters align with standard domestic hot water and heating system requirements, allowing for safe and efficient operation within typical building services specifications. The PE-AL-PEX construction ensures the pipe maintains integrity under thermal cycling and prolonged exposure to hot water or heating media.

Installation and connection

The IVAR Alpex - Duo XS 20 x 2 rod requires secure mechanical connections using TA or RA crimp rings or press fittings. Prior to installation, verify that the pipe is free from kinks and damage, and that the internal surface is clean and undamaged. The pipe should be cut straight using a dedicated pipe cutter to ensure a flush end for proper fitting engagement. When using crimp rings, ensure the correct size and type is selected to match the pipe diameter and fitting. After assembly, inspect the joint for any visible gaps or misalignment, and test the system for leaks before commissioning. Common mistakes include using incorrect crimp ring sizes, improper alignment of the pipe and fitting, or insufficient crimping force, which can lead to joint failure over time.

Compatibility and accessories

This pipe is compatible with standard TA and RA crimping tools, as well as press fitting systems designed for PE-AL-PEX. For installation, additional components such as crimp rings, press fittings, and appropriate joining tools are required. Installers should ensure that all fittings and tools are correctly matched to the pipe dimensions and material type. No related products are listed for this item.

Technical background for designers

The PE-AL-PEX construction consists of three layers: an outer and inner layer of cross-linked polyethylene (PEX) and a middle layer of aluminium. This tri-layer system provides enhanced thermal conductivity, minimal expansion and contraction, and resistance to oxygen ingress, which helps prevent corrosion in closed-loop heating systems. The material is particularly suited for systems with moderate pressure and temperature levels, and its dimensional stability allows for accurate layout planning. The nominal pressure rating ensures compatibility with standard heating system components and supports safe operation within the defined temperature range. Long-term performance depends on maintaining correct installation practices and avoiding exposure to incompatible chemicals or excessive mechanical stress.

Service and operation

During operation, regular visual inspections should be carried out to check for signs of wear, damage or leakage. Any joints should be examined for movement or loosening, especially after initial commissioning or during periods of high thermal cycling. No specific service intervals are provided in the product data, but routine checks are recommended as part of general system maintenance. If the pipe is exposed to temperatures exceeding +95 °C, it should be removed from service immediately to avoid degradation of the material properties.

Frequently asked questions

Can IVAR Alpex - Duo XS 20 x 2 be connected to standard heating manifolds?
Yes, the pipe can be connected to manifolds using TA or RA crimp rings or press fittings, provided the manifold ports are compatible with the pipe diameter and connection method.

Is the PE-AL-PEX construction suitable for underfloor heating systems?
Yes, the PE-AL-PEX structure offers good thermal conductivity and dimensional stability, making it suitable for underfloor heating applications where controlled heat distribution is required.

Can the pipe be used for cold water supply?
No, the IVAR Alpex - Duo XS is specifically rated for hot water and heating systems with a maximum operating temperature of +95 °C and is not intended for cold water applications.

What is the minimum bend radius for this pipe?
The minimum bend radius should be maintained according to the manufacturer’s technical data sheet to avoid kinking or damaging the internal structure of the pipe.