The specialist

for heating and cooling, compressed air and industrial applications



Made of corrosion-resistant polypropylene, aquatherm blue pipe is ideal for the transport of cooling and heating media in closed systems. It is particularly well suited for a wide variety of industrial applications. The physical properties of the plastic, such as its high temperature capacity and pressure resistance, are tailored to the specific needs of the heating and cooling sector. aquatherm blue pipe is joined via reliable heat fusion, which produces a virtually leak-free and cohesive unit with excellent safety and durability. aquatherm blue pipe combined with aquatherm green pipe fittings provides all the technology and components required for the piping installation of commercial air conditioning and heating systems and industrial applications.

Technical specification

  • high temperature resistance
  • high pressure capacity
  • corrosion resistant
  • chemical resistant
  • lower weight than metallic materials
  • less insulation needed compared to metallic pipes
aquatherm green pipe
aquatherm blue pipe
aquatherm lilac pipe
Potable water application
Heating system construction
Climate technology
Chilled water technology
Swimming-pool technology
Chemical transport due to high chemical resistance
Rainwater application
Compressed air systems
Surface heating system
Application in the field of ship building
District heating pipeline systems

we offer in the dimensions 16, 20, 25, 32, 40, 50, 63, 75, 90, 110, 125mm for socket welding method and 160, 200, 250, 315, 355, 400 and 450, 500, 560 630mm for butt-welding method.

Standard Dimension Ratio (SDR) aquatherm blue 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


Technical catalogue

For detailed information about aquatherm blue pipe, please refer to the technical catalogue.

Technical catalogue

For detailed information about our products, please refer to the technical catalogue.

Pipe friction loss

Further information about the friction loss of our PP-R piping systems is available below.