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Flexalen 1000+

Multi pipe systems for multifunctional solutions
Flexalen 1000+ pre-insulated duct
Flexalen 1000+ pre-insulated duct
Flexalen 1000+ pre-insulated duct
Flexalen 1000+ pre-insulated duct

Flexalen 1000+ is our cost-effective and ultra-flexible pre-insulated multi pipe solution, ideal for combining multiple applications in a single network. Our range of Flexalen 1000+ pre-insulated ducts offers many possible combinations with polybutene (PB-1) heat transfer tubes, ensuring flexible freedom today, as well as for future adaptations.

Flexible efficiency with Flexalen 1000+

You can your combine heat and potable hot water tubes from a heat pump, wood chip boiler or solar installation as well as your frost protection and other cables in a single pre-insulated duct, then Flexalen 1000+ is the ideal choice. It combines various applications in a single, homogenous distribution network that is flexibly efficient.

One pipe to carry them all

This range of our wide Flexalen product family is highly suitable for micro-networks. A variety of pipes and other connection lines can be combined in a single solution, making it highly over-seeable. The flexibility and homogeneity of the components allow for a quick and easy installation with minimal disturbance to the existing environment.

Flexalen 1000+ pre-insulated ducts can be tailor-made to suit your specific needs. Find all the technical details in the Flexalen Product Guide in the downloads section.

  • Sustainability

    Fully recyclable

    Satisfies the requirements for sustainable construction

  • Health

    Produced without (H)CFC
    Complies to REACH
    Complies to VOC (Volatile organic components)

  • Installation

    Easy to install

    Safe welding connections due to Polybutene pipes

    Assembly on customer specification

    Full compatibility with Flexalen 600

  • Specificities

    Free moving carrier pipes

    Multi-line capability

    Homogenous connection between outer casing and insulation

  • Flexibility

    Excellent flexibility

    Bending radius 0,6 m – 1,0 m (depending on inner pipe selection)

  • Pressure rating

    Max. operating pressure 8 bar (116 PSI)

  • Additional information

    For more details contact Thermaflex or download the technical datasheet!

  • Availabilities

    4 standard medium pipe combinations:

    • OD32/OD25
    • OD40/OD25
    • OD 50/OD25
    • OD63/OD32

    Several combinations of OD16 till OD63 mm pipes possible e.g:

    • H2/32A25A20…2 times OD32 heating, OD25 potable, OD20 circulation
    • H2/50A32A25…2 times OD50 heating, OD32 potable, OD25 circulation

    Several insulation thicknesses possible, depending on inner pipes combinations: e.g. OD 125mm, OD 160mm and OD 200mm

    Up to 300 m length in coils available

    End caps for water tight sealing between outer casing and medium pipes


  KIWA certificate K8492801 welding process for plastic piping systems Flexalen 600 PDF 371 KB Preview Download Mail

This process certificate is issued by KIWA on the basis of BRL 5609 'pre-insulated flexible plastics piping systems for warm water distribution outside buildings'

Together with KIWA the welding process of electrofusion, polyfusion and butt welding is technical approved with product certificate stated requirements.


Radius 10 Km
200 Km
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