This Tweetop PERT II-AL-PERT II insulated multilayer pipe 20mm x 50m connects internal sanitary and heating systems. Specifically, it provides a durable, secure, and completely leak-free transfer of potable water and heating mediums. Furthermore, thanks to the factory-applied foamed polyethylene insulation, you significantly speed up installation by eliminating the need to manually lag pipes on site.

Therefore, this pipe works perfectly for underfloor heating (UFH), radiator heating, and hot and cold domestic water systems. Additionally, it easily handles demanding applications, such as the safe distribution of chilled water in modern cooling installations.

The pipe features an innovative construction with a precision ultrasonically welded aluminium core and layers of resilient polyethylene (PERT). Moreover, the material is completely chemically inert and designed for continuous operation for a minimum of 50 years. As a result, this robust build makes it fully hygienic and reliable for long-term residential, commercial, and industrial installations.

Key Features & Benefits:

• Form Stability: The pipe design allows for easy bending without springing back to its original shape. Consequently, you achieve fast, flexible installation in tight spaces without the need for additional elbows or guides.

• Pre-Insulated Thermal Protection: The system includes a factory-applied lagging with a very low thermal conductivity coefficient (0.039 W/m·K). For example, if you are routing pipes within floors or walls, this insulation effectively minimizes heat loss and protects against mechanical damage. Ultimately, this allows you to create highly energy-efficient systems.

• 100% Oxygen Barrier: The overlap-welded aluminium core acts as a completely airtight layer. Importantly, it completely blocks oxygen from permeating into the system. Therefore, it guarantees full protection against corrosion for all metallic components within the heating installation.

• Condensation & Noise Reduction: The insulation layer prevents moisture condensation on the pipe’s outer surface. In particular, this lagging also provides an acoustic function, effectively dampening the noise of water flowing under pressure.

• Low Thermal Expansion: The aluminium insert provides high thermal stability at a rate of 0.025 mm/m·K. Besides that, this value is fully comparable to traditional steel or copper pipes, which significantly reduces stress across the entire plumbing network.

Technical Specifications:

• Brand: Tweetop

• Product Type: Pre-Insulated Multilayer Pipe

• Structure: PERT II / Aluminium / PERT II

• Insulation: Foamed Polyethylene (PE)

• Available Diameters: 16mm to 32mm

• Anti-Diffusion Layer: 100% oxygen barrier

• Lifespan: Minimum 50 years

• Application: Heating (underfloor, radiator, wall), Cooling (chilled water), and Potable Water (Hot & Cold)