CALPEX PUR-KING – the world champion in saving energy CALPEX PUR-KING with outstanding insulating performance
CALPEX PUR-KING with outstanding insulating performance
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CALPEX PUR-KING – pre-insulated, flexible PEX pipe system

CALPEX PUR-KING is the world champion in saving energy – the insulating material has a thermal conductivity of only λ 0.0199 W/m*K, thereby surpassing a magical limit.

CALPEX PUR-KING is a flexible and self-compensating pipe system for low-temperature applications in local and district heating and is laid in the ground. Its polyurethane insulating material has an extremely low thermal conductivity of 0.0199 watts per meter and kelvin – and that at a measuring temperature of 50 °C.

In this substance class, this is an absolute record that has not been achieved by any comparable pipe system. The CALPEX PUR-KING is a patent-protected pipe manufactured in a continuously operating production process. The consistently high quality of the insulation has been confirmed by regular measurements carried out by an accredited testing institute.

Until the successful development of the CALPEX PUR-KING pipe, a thermal conductivity of 0.0210 W/m*K was a lower limit generally assumed to be difficult to undercut with reasonable technical effort. With this in mind, the innovative production process is even more remarkable. The unique foam technology significantly increases the energy efficiency of this pre-insulated pipe system.

Cost reduction through efficiency

Over the past decade, BRUGG Pipes has been able to decrease the lambda value for the CALPEX pipe systems further and further through intensive research and development work.

With the newly developed CALPEX PUR-KING process technology, we have now succeeded in reducing the thermoconductivity of CALPEX pipes to the world’s lowest lambda value of 0.0199 W/m*K. With this record-breaking figure, we are able to beat what were previously considered to be the lowest physical thermoconductivity values for polyurethane by a significant amount. CALPEX PUR-KING is therefore becoming the instrument for another major increase in the energy efficiency of pre-insulated pipe systems for heating operation with annual operating cost savings of up to 15%.

Material reduction through efficiency

The CALPEX PUR-KING pipe system not only significantly reduces your operating costs, but also results in substantial savings in insulation material, which has a positive effect on trench and transport costs.



Competent and reliable

BRUGG Pipes stands for high quality, innovative products and many years of experience. We offer you individualised and goal-oriented consultation. The internal quality control system and compliance with all relevant standards ensure that our supplier plants in Germany and Switzerland maintain the highest quality standards. Our development team is always working with your future requirements in mind. The knowledge gained is already being used in product solutions today, which we tailor exactly to your specific needs of tomorrow. One of our strengths is our high supply availability thanks to local warehouses in your area.


CALPEX PUR-KING wins DTI test again

Every year, the Danish Technological Institute carries out an extensive series of tests on pre-insulated district heating pipes. In the category of flexible PEX pipe systems, we led the way for the 5th time in a row with our CALPEX PUR-KING. We are very pleased about this! In the 5 years since it was launched on the market, we have not only emerged as the test winner but have also been the only manufacturer with consistently low values.

CALPEX PUR-KING – here to stay!

Boasting the world’s best insulation value, CALPEX PUR-KING – with its patented PUR foam and exceptionally high Swiss quality standards – still simply cannot be beaten. Thanks to the closed-cell PUR foam, the heat loss remains almost as low as on day one – without a diffusion barrier. The extremely efficient insulating performance enables annual energy savings of up to 15% and will also help you to reduce CO2. Long live the KING!

 danish institute

Quick and flexible laying

With CALPEX PUR-KING, you can easily achieve tight bending radii. Flexible when it comes to laying thanks to small bending radii and minimal required effort. Narrower winding radii mean lower costs thanks to longer delivery lengths for transportation, in storage and in trenches.

Reduction of installation effort thanks to our sophisticated installation technology, patented clip cover as well as simple, tool-free and reliable connections. So that you can keep to ambitious schedules without any stress.


Ideal for heating networks

The pre-insulated CALPEX PUR-KING pipe system is ideal for low-temperature applications up to 95° C in local and district heating and for house-to-house connections.


Usage examples

Unique and reliable accessories

•    Simple and reliable connection technology
•    Quick and practical post-insulation with clip covers and distribution shafts
•    Minimal laying work and long service life

Clip covers

Clip covers

Over the past ten years, BRUGG Pipes has succeeded in reducing the lambda value of CALPEX PUR-KING pipe systems further and further through intensive research and development work. With the newly developed process technology of CALPEX PUR-KING we have now succeeded.


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BRUGG Pipes service for you

•    Pipe lengths including accessories precisely tailored to your needs
•    Support for your planning processes
•    Worldwide sales network
•    Worldwide product training and support
•    Production standard according to EN 15632-2
•    Quality standard according to ISO 9001, ISO 45001 and ISO 14001

CALPEX PUR-KING was tested by the independent institute IMA Dresden and certified by the German Accreditation Body.

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The product range for your local and district heating network: