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Prime your pump

Better control for better performance. The future of energy is in systems that are both efficient and compatible with renewables. Heat pumps answer to that perfectly, using temperature differences to produce heat. So control of the temperature inside the pipes that are connected to heat pumps is essential to reach optimal efficiency. Proper insulation of these pipes assures this control.

Thermaflex pre-insulated Flexalen 600 twin pipes connect outdoor air-to-water heat pumps to houses so heat arrives without substantial energy loss. Insulated geothermal pipes connected to the building, as well as the upper 20 meters (60 feet) of the riser pipes, increase the efficiency of geothermal heat pumps. Insulated flow and return pipes of outdoor air-to-air heat pumps are also important to a system that runs smoothly.  

Let’s create tomorrow’s sustainable energy systems today

The flexibility and quality of our plug-and-play insulated pipe solutions have made them a favorite of heat pump installers, manufacturers and pump pipe suppliers.

Flexalen 600 twin pipes:

  • Minimize heat loss in underground connections for air-to-water heat pumps
  • Install easily and quickly due to their highly flexible PB construction
  • Are available in short lengths to meet individual installer needs
  • Include proper connectors and accessories for additional ease-of-us

Protectube insulation channel:  

  • Protects buried pipes, including geothermal, against moisture and keeps temperatures at an efficient level
  • Provides all-in-one protection and insulation for a professional underground pipe solution
  • Is available from Thermaflex pre-installed on your pipes and delivered to your job site


  Pressure drop PB-pipes PDF 44 KB Preview Download Mail

Pressure drop PB-pipes

Brochures Catalogues

  Flexalen Product Guide PDF 4736 KB Preview Download Mail

The Flexalen Product Guide offers all system, application & technical specifications for all Flexalen product ranges.

  Successful in the past - prepared for the future (PBPSA) PDF 1619 KB Preview Download Mail

This brochure is giving an introduction to Polybutene including a review of the performance of Polybutene pressure piping systems in meeting the needs of sustainable building regulations.

Technical Datasheets

  Drukverliezen PB-leidingen PDF 44 KB Preview Download Mail

Drukverliezen PB-leidingen

Environmental Certifications

  What is an EPD? PDF 421 KB Preview Download Mail

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