Flexalen PU

Flexible and highest insulation class

Flexalen PU pre-insulated pipes are specially designed for medium to large heating networks where flexibility is required in combination with the highest insulation class.

Download datasheet
Flexalen PU double pre insulated pipe
Flexalen PU SL single pre insulated pipe

Flexalen pre-insulated pipes

Flexalen PU pre-insulated pipe consists of:

  • Service pipe made of polybutene (PB-1): a flexible polyolefin material for fast and reliable installation and a guaranteed service life. It is best in class in terms of pressure and temperature resistance.
  • Bonded continuous foamed polyurethane (PUR) insulation with excellent insulation values.
  • Corrugated Low Density Polyethylene (LDPE) casing pipe for coiled tubing, for maximum flexibility and protection against external damage.

Flexalen PU SL pre-insulated pipe consists of:

  • Service pipe made of polybutene (PB-1): a flexible polyolefin material for fast and reliable installation and a guaranteed service life. It is best in class in terms of pressure and temperature resistance.
  • Bonded polyurethane (PUR) insulation with excellent insulation values.
  • Smooth High Density Polyethylene (HDPE) casing pipe for straight pipes, to protect against external damage.

Flexalen PU, the highest insulation class for main pipelines, can easily be combined with Flexalen 600, the most flexible house connection. It is safe and reliable thanks to the homogeneous welding and high pressure capacity of 8 bar at 95 °C.

We offer support with integrated network design, calculation tools, training and on-site support.

Applications Flexalen PU

Heating networks
Cooling networks
Heatpumps
Biomass
Geothermal
Mistakes to avoid when calculating designing heating networks
Download our free whitepaper!

The biggest mistake to avoid when calculating heating networks

Designing heating networks can be a real challenge! In this whitepaper you will learn all about the biggest mistakes to avoid!

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Certifications and standards

reach logo
REACH
KOMO 5609 2 system
BRL 5609-2
CTSB QB08
QB08

Products

Flexalen PU, flexible pre-insulated pipes, are available as single-pipe (DN20 to DN80) and double-pipe systems (DN20 to DN65) in coils.
Flexalen PU SL semi-flexible pre-insulated sticks are available up to DN300 and in lengths of 11.8 m or 5.8 m.

Flexalen PU single pre insulate pipe

Flexalen PU single

Flexalen PU double pre insulated pipe

Flexalen PU double

Flexalen PU SL single pre insulated pipe

Flexalen PU SL single

Flexalen PU SL double pre insulated pipe

Flexalen PU SL double

Jasper van de Ven Sales manager Piping Solutions
Jasper van de Ven

Int. Sales Manager pre-insulated pipings

Ask our expert

Jasper van de Ven is happy to help you find the best solution for your specific application. Ask your question and get advice within 3 business days!

Why Thermaflex?

We develop and supply high-quality technical solutions for insulation, protection, shock resistance and soundproofing.

Customised solutions
100% recyclable insulation products
Project management and support

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