PERT-AL-PERT Multilayer Pipe 32x3 - 50 Meter Roll

The PERT-AL-PERT 32x3 multilayer pipe from Exclusivas Bara, reference 40032, is an advanced technical solution that combines the best of plastic and metal pipes in a single product. Supplied in a 50-meter coil, it is composed of five layers: two outer polyethylene (PERT) layers, one intermediate aluminum layer, and two adhesive layers that ensure a solid and stable bond between materials.

This multilayer design provides the pipe with superior thermal and mechanical resistance, with an outer diameter of 16 mm and a thickness of 2 mm. Thanks to its construction, the pipe can operate at temperatures up to 95°C with a working pressure of 10 bar, and can withstand peak temperatures of up to 110°C or internal pressure tests of up to 20 bar at 20°C.

The features of the PERT-AL-PERT multilayer pipe make it an ideal choice for plumbing, heating, and potable water systems, combining lightness, flexibility, and durability:

• Thermal resistance up to 95°C continuous and 110°C peak
• Maximum working pressure: 10 bar at 95°C
• Total impermeability to oxygen diffusion (0 mg/l·day)
• Low internal roughness: E=0.0004 mm
• Minimal linear expansion: 0.025 mm/m·K
• Thermal conductivity: 0.4 W/m·K
• Density: 1.47 g/cm³
• Crosslinking degree: over 65%

This pipe can be manually bent while maintaining its given shape, significantly reducing installation time. It also offers excellent resistance to corrosion, abrasion, and chemicals, preventing internal scaling and deposits.

Advantages over other types of pipes

Compared to conventional plastic pipes, the multilayer pipe offers:

• Greater resistance to internal pressure
• Lower coefficient of thermal expansion
• Dimensional stability with permanent bends
• Longer service life

Compared to metal pipes, it provides key advantages such as:

• Greater resistance to freezing due to its expansion capacity
• Reduced energy loss thanks to low thermal conductivity
• Lighter weight, making transport and installation easier
• Significant reduction in noise during fluid circulation
• Superior resistance to corrosion and chemical agents
• Long service life of up to 50 years even under demanding conditions
• Compatible with potable water and preserves the organoleptic properties of the fluid

Applications and compatibilities

The pipe is designed to comply with Royal Decree 140/2003 on drinking water quality and the Spanish Technical Building Code (CTE) in its HS4 document. It is completely non-toxic and does not alter the color, odor, or taste of water. Additionally, it is suitable for preventive measures against legionella and its thermal coefficient reduces condensation and heat loss.

Differences between PERT and PEX pipes

• Raw material: PERT is a heat-resistant PE-RT without crosslinking, while PEX requires chemical crosslinking processes (PE-Xa, PE-Xb, PE-Xc).
• Repair: PERT can be repaired by hot fusion, maintaining its original strength, unlike PEX which requires external clamps.
• Uses: PERT is suitable for both heating and food-grade fluid transport. PEX may have limitations in this regard due to its chemical crosslinking.

Conclusion

The PERT-AL-PERT 32x3 multilayer pipe is a highly efficient, safe, and durable technical solution. Its excellent performance against pressure, temperature, and chemical agents makes it an ideal choice for modern plumbing and heating installations, ensuring a long service life, minimal maintenance, and optimal performance at all times.