Pre-insulated pipe FLEXSTAR DUO 50+50x150: Pex-a pipe 50x4.6+50x4.6mm, d150mm, 6 bar, 80°C, double, thermal insulation with PUR foam, with corrugated LLDPE outer jacket 1091677

Pre-insulated pipe for efficient heating installations

The FLEXSTAR DUO pre-insulated pipe is an advanced solution for heating installations, especially in heat pump systems and district heating networks. The twin-pipe design (50+50 mm) with PUR foam insulation and a durable LLDPE jacket ensures minimal heat loss and high resistance to mechanical damage. This combination of flexibility and durability makes installation easier even in challenging conditions.

Construction and properties

The FLEXSTAR system is based on PEX pipes with an EVOH anti-diffusion barrier, which prevents corrosion of metallic components in the installation and extends its service life. The PUR foam insulation with a thermal conductivity coefficient of 0.297 W/(m.K) significantly reduces energy losses, resulting in lower operating costs. The corrugated outer jacket made of LLDPE polyethylene protects the pipe from damage and weathering. This pipe is characterized by high flexibility, allowing it to be laid with a minimum bending radius (0.4 m), making installation easier in tight spaces and eliminating the need for additional elbows.

Application and benefits

The FLEXSTAR DUO pipe is used in:

• Heat pumps (air-to-water): Optimal insulation parameters increase the efficiency of the heating system.
• Local district heating networks: Provides reliable and energy-efficient heat distribution.
• Heat supply to buildings: Ideal for new installations and modernization of existing heating systems.
• House-to-house connections: Enables efficient heat distribution between buildings.

Thanks to its construction, FLEXSTAR DUO offers a number of benefits:

• Low heat loss: PUR insulation minimizes energy losses, reducing heating costs.
• High flexibility: Facilitates installation in tight spaces and reduces the need for additional connecting elements.
• Durability and reliability: The materials used ensure a long service life of the installation and resistance to corrosion.
• Fast installation: No welding required speeds up the installation process and reduces labor costs.
• Compliance with standards: The system meets the requirements of DIN EN 15632-2 and DIN 4726 standards, guaranteeing safety and quality.
• Cost savings: Reducing heat loss translates into lower heating bills, and easy installation – into lower installation costs.
• Cut to size option: The pipe is available cut to the meter, allowing for precise adaptation to the needs of a specific project.

FLEXSTAR DUO pipe is an investment in the comfort, economy and reliability of the heating system – for both professionals and end users.