Multilayer pipe Comap MultiSKIN 50 x 4.0 mm PEXc/AL/PEXc, 5 m coil

Comap MultiSKIN 50 x 4.0 mm PEXc/AL/PEXc is a multilayer pipe supplied as a 5 m coil for plumbing and heating distribution. The pipe has an aluminium core bonded between inner and outer cross-linked polyethylene (PEXc) layers, providing improved dimensional stability, a reliable oxygen diffusion barrier and reduced longitudinal expansion compared with single-layer plastic pipes. Its nominal diameter and wall thickness make it suitable for carrying hot and cold potable water and for use in underfloor heating manifolds where steady hydraulic and thermal performance is required.

Advantages

The multilayer construction combines the chemical resistance and flexibility of PEXc with the stiffness and low permeability of an aluminium barrier. This results in better shape retention when bent or coiled, lower thermal expansion than plain PEX, and protection against oxygen ingress into sealed heating circuits. The 5 m coil format is convenient for shorter runs and reduces the need for additional joints in tight installation areas.

Suitable for

• Hot and cold potable water distribution
• Underfloor heating manifolds and branch lines
• Plumbing installations in residential and commercial buildings
• Applications requiring an oxygen diffusion barrier in closed heating systems

Key specifications

• Nominal size: 50 mm outer diameter
• Wall thickness: 4.0 mm
• Construction: PEXc/Aluminium/PEXc multilayer
• Length: 5 m coil
• Material properties: cross-linked polyethylene outer and inner layers with bonded aluminium core
• Typical uses: potable water and heating distribution, suitable for connection to manifolds and fittings designed for multilayer pipe

How to use

Cut the pipe squarely to the required length using a suitable pipe cutter designed for multilayer tubing. Remove any burrs and ensure that the aluminium core is not exposed or distorted at the cut end. Connect the pipe to compatible fittings or manifolds using fittings and installation methods specified for PEXc/AL/PEXc multilayer systems (crimp, clamp, or press systems as appropriate). Observe the manufacturer’s guidance for minimum bending radius, support spacing and allowable operating temperatures and pressures for the installed system.

Usage recommendations

Store coils horizontally in a dry, shaded area away from direct sunlight and sources of heat. During installation, avoid excessive bending beyond the recommended minimum radius and prevent mechanical damage to the outer PEXc layer. Use compatible fittings and follow local plumbing and heating codes to ensure reliable system performance and durability.