IVAR Alpex Isol disc 26 x 3; 9 mm, 806551025

Product detailed description

IVAR Alpex Isol discs are commonly used in residential and commercial buildings for central heating and water distribution systems. They are frequently found in radiator circuits and underfloor heating installations, where reliable thermal performance and long-term durability are essential. The PEX-AL-PEX composite structure ensures flexibility during installation while maintaining structural integrity under thermal expansion and contraction. Installers typically handle these pipes in conjunction with fitting systems that require crimping or press-fit methods, ensuring secure and leak-free connections.

These discs are supplied in 50 m lengths, making them suitable for medium to large-scale projects. The insulation layer provides additional protection against heat loss and mechanical damage. The white outer sheath is made of polyurethane foam with a low-density polyethylene protective layer, offering a dual barrier for enhanced insulation and environmental resistance.

Technical parameters

Installation and connection

Installation involves unrolling the pipe from the disc and cutting to required lengths using a suitable pipe cutter. Connections are made using either crimping tools compatible with IVAR.TA or IVAR.RA fittings, or press-fit tools for IVAR.PT fittings. The pipe must be free from kinks and properly aligned before securing the fitting. A key checkpoint is verifying the correct depth of the fitting into the pipe to ensure a watertight seal. Common mistakes include insufficient crimping pressure, incorrect tool alignment, or using incompatible fittings, which can lead to leaks or system failure.

Compatibility and accessories

This pipe is specifically designed to work with IVAR.TA, IVAR.RA and IVAR.PT series fittings. For installation, crimping tools or press-fit tools must be used accordingly. Additional accessories such as pipe cutters, insulation tapes and sealing compounds should be available for proper assembly. Ensure all components are from the same manufacturer series to maintain compatibility and system integrity.

Technical background for designers

The PEX-AL-PEX composite consists of cross-linked polyethylene (PEX), an aluminium layer, and a second PEX layer. This structure provides high thermal conductivity and mechanical strength, allowing for efficient heat transfer and resistance to expansion. The insulation layer is composed of polyurethane foam with a low-density polyethylene outer sheath, providing thermal retention and mechanical protection. The system's efficiency depends on correct sizing, proper insulation thickness and accurate installation techniques. Long-term performance is influenced by adherence to design standards and avoiding overpressure or excessive thermal cycling.

Service and operation

Regular visual inspections are recommended to check for signs of wear, damage or discolouration. Ensure all connections remain tight and free from corrosion. Any defects in the insulation or pipe surface should be addressed immediately to prevent heat loss or mechanical failure. There are no specified service intervals for routine maintenance, but adherence to good practice in system monitoring is advised.

Frequently asked questions

Can IVAR Alpex Isol discs be used in radiant floor heating systems?
Yes, the PEX-AL-PEX construction is suitable for radiant floor heating applications due to its flexibility and thermal conductivity.

Is it compatible with press-fit tools?
Yes, the pipe can be connected using press-fit tools with fittings from the IVAR.PT series.

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 structural damage.

Can it be used for potable water supply?
Yes, the material composition is suitable for potable water systems as stated in the product description.