aquatherm TI

Pre-insulated polypropylene piping system



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aquatherm ti is a pre-insulated polypropylene piping system for underground installation. It is ideally suited to transport warm potable water or heating and cooling water over longer distances. The medium pipe (aquatherm green pipe for potable applications or aquatherm blue pipe for heating and cooling) is insulated with rigid polyurethane foam and enclosed in a jacket pipe made of polyethylene. Only pipes with aquatherm’s multi-layer, faser-composite (MF) technology are used, making them perfect for underground installation due to their limited thermal expansion. All pipes are made of the corrosion-resistant material fusiolen® PP-R, which is characterized by its safe and strong heat fusion connections.

Technical specification


  • limited thermal length expansion
  • corrosion-resistant
  • excellent heat fusion properties
  • high impact resistance
  • low weight
  • high natural insulation value


  • Heating systems
  • Climate technology and chilled water technology 
  • Potable water application
  • Reclaimed and recycled water applications
  • Industrial applications

The aquatherm pipes are pre-insulated and available as single tubes as listed below.

  • aquatherm green pipe TI – faser composite pipe system SDR 7,4
  • aquatherm green pipe TI – faser composite pipe system SDR 9
  • aquatherm blue pipe OT TI – faser composite pipe system SDR 11
  • aquatherm blue pipe TI – faser composite pipe system SDR 17,6


Medium pipeCasing pipePUR-rigid foam
external diameterexternal diameterthickness
32 mm90 mm26,00 mm
40 mm110 mm32,00 mm
50 mm110 mm27,00 mm
63 mm125 mm28,00 mm
75 mm140 mm29,50 mm
90 mm160 mm32,00 mm
110 mm200 mm41,80 mm
125 mm225 mm46,50 mm
160 mm250 mm41,10 mm
200 mm315 mm52,60 mm
250 mm400 mm68,70 mm
315 mm450 mm60,50 mm
355 mm500 mm64,70 mm


Standard Dimension Ratio (SDR) aquatherm green pipe we offer in the following SDR-sizes:

  • SDR 7.4
  • SDR 11
  • SDR 17,6

Our material fusiolen® PP-R

Decades of experience in the production and the application of PP-R-pipe systems and the current ambition of continuous development led to numerous improvements of the aquatherm system technology. Newly opened markets set a high standard of quality to make even larger demands against the pipe material. Various fields of application require the greatest possible independence of the material to be processed. Raw materials with new properties are required. aquatherm has developed and produced their own, innovative PP-R-materials which meet the requirement of a global market in the potable water and heating technology, in the airconditioning and chilling engineering, in the industrial and agriculture economy, in shipbuilding as well as in fire protection. Successful results of this research are fusiolen® PP-R, fusiolen® PP-R C or fusiolen® PP-R FS. All aquatherm PP-R-pipes and fittings are made of fusiolen® PP-R. Special heat and extraction stability are only two of the features of this material. Its physical and chemical properties are well-suited to the transfer of potable water and to the heating field. Above all, the good welding properties and fusion, resulting in a permanent connection, have made the aquatherm systems and the raw material fusiolen® PP-R well known worldwide.

Hygienic suitability

According to DIN 1988 T2 all installation parts comingdirectly in contact with potable water are commodity goods acc. to the Law for Food and Commodity Goods. Plastic pipes have to comply with the KTW-recommendations of the Federal Public Health Department. further information

Chemical and thermal disinfection

Contrary to the disinfection of drinking water, the disinfection of a system is a discontinuous measure, comprising a drinking water system from the area of contamination to the tapping point of the consumer. In general, a disinfection is to be applied temporarily only in case of a proven contamination. further information


Fire protection

The aquatherm PP-R pipe systems comply with the requirements of the fire classification B2 DIN 4102 (normal inflammable). Compared to natural products like wood, cork or wool, aquatherm PP-R-pipes do not produce any gas toxicity. In case of fire, there is no risk of dioxin emissions. further information



The following laws, decrees, guidelines and standards have to be considered on planning and designing aquatherm PP-R-pipes for potable water and heating installations. further information

Faser-composite technology

aquatherm is proud to manufacture its own glass-fibre reinforced polypropylene composite. Our three-layer pipes are extruded with a fibre-reinforced middle layer that strengthens the pipe and restricts expansion and contraction.

The benefits of this construction include:


  • linear expansion reduced 75 percent compared with standard PP pipe
  • 20 percent increased flow rate due to smaller required wall thickness
  • longer support intervals and reduced number of clamps compared to standard plastic pipes
  • optimum cost-performance ratio
  • high stability
  • lower weight
  • high impact resistance
  • simply cut and heat-fuse

Contact: aquatherm GmbH | Biggen 5 |  57439 Attendorn Germany | Tel: +49 2722 950 0 |