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LK Group

  • LK Systems

    LK Systems is the leading manufacturer of easy-to-install systems for heating and tap water distribution and pre-insulated pipes in the Nordics. Through our prefabrication factory, we also provide tailor-made solutions that simplify the installation process even further. Svenska English Norsk Suomi

  • LK Armatur

    LK Armatur is a leading producer in Europe, manufactures millions of valves per year for the global HVAC market. Our solutions are based on a comprehensive view of how valves, control units, components and prefabricated products work together. Svenska English Deutsch Italiano Yкраїнська Suomi

  • LK Pex

    Our PEX Pipe Extrusion business area is an innovative manufacturer of high-quality plastic pipes for the heating and plumbing industry. Our core is the efficient, high-technology production process for crosslinked PE-Xa pipes, resulting in products with a unique combination of flexibility and hydrostatic strength. English

  • LK Group

    LK is a family-owned trading and production group, operating on a global scale within the HVAC-area. We are the market leader in Sweden and has an increasing sales of products, systems and solutions in the Nordic countries, Europe and the USA. Svenska English
LK Maxitherm Pre-Insulated Pipe Systems

LK Maxitherm Pre‑Insulated Pipe Systems

Range, systems & applications

Flexible pre-insulated pipe systems for heating, cooling and water

With more than 75 years of experience in pre-insulated pipe systems and thermal insulation, LK Maxitherm offers flexible and energy-efficient pipe solutions for heating, cooling, domestic hot water, potable water and wastewater applications. The range combines high insulation performance with flexible installation and solutions for everything from individual buildings to district energy networks and industrial projects.

LK Maxitherm-lambda value

World-class lambda* values

LK Maxitherm pre-insulated pipe systems offer industry-leading thermal performance with very low lambda values. Their high insulation performance reduces heat loss, improves energy efficiency and can contribute to lower operating costs and a more sustainable HVAC installation.

 

*The lambda value describes the thermal conductivity of an insulation material and is expressed in W/mK. The lower the lambda value, the better the material’s thermal insulation performance..
LK FLEXSTAR KOMPAKT

FLEXSTAR KOMPAKT

Compact, flexible pre-insulated PEX pipe for heating or domestic hot water.

  • Twin-pipe configuration
  • Pressure rating: PN 6, PN 10
  • Continuous operating temperature up to +80 °C
  • Temporary operating temperature up to +95 °C
  • Supplied in 10, 15 and 20 metre lengths

Designed for easy handling & installation in small and medium-sized projects. Can be transported in smaller service vehicles.

LK CALPEX

CALPEX / CALPEX PLUS+

Flexible pre-insulated PEX pipe system for heating, cooling or domestic hot water.

  • Pressure rating: PN 6, PN 10
  • Continuous operating temperature up to +80 °C
  • Temporary operating temperature up to +95 °C
  • Coil lengths up to 1000m

Long coil lengths enable efficient installation with fewer underground joints, while high-performance PUR insulation helps minimise heat loss.

LK CASAFLEX

CASAFLEX

Flexible pre-insulated stainless-steel pipe system for heating and district heating.

  • Single- and twin-pipe configurations
  • Pressure rating: PN 16, PN 25
  • Operating temperatures up to +180 °C
  • Available in long coils for reduced underground jointing

Designed for demanding heating applications where high operating temperatures and flexible routing are required.

LK COOLMANT

COOLMANT

Pre-insulated PE100 pipe for larger district cooling, free cooling, drinking and waste water.

  • Pressure rating: PN 10 / PN 16
  • Operating temperature: −20 °C to +30 °C
  • SDR11 or SDR 17
  • Supplied in 6 and 12 metre lengths

A straight-pipe solution for larger dimensions where district cooling, free cooling, potable water or wastewater needs to be transported efficiently.

LK COOLFLEX

COOLFLEX

Flexible pre-insulated PE100 pipe for district cooling, cold and potable water, and wastewater.

  • Pressure rating: PN 16
  • Operating temperature: −20 °C to +40 °C
  • Coil lengths up to 520 m
  • SDR 11

A flexible solution for district cooling, free cooling and local networks, with long coil lengths that can reduce the number of underground joints.

LK EIGERFLEX

EIGERFLEX

Flexible pre-insulated PE100 pipe system for cold and potable water and wastewater, with a self-regulating heating cable.

  • Pressure rating: PN 16
  • Operating temperature: −30 °C to +20 °C
  • Coil lengths up to 520 m
  • SDR 11

Designed for cold water and pressurised wastewater where conventional installation at frost-free depth is difficult or impossible.

Systems and applications

LK Maxitherm offers a broad range of pre-insulated pipe systems in dimensions suitable for everything from individual homes to complex residential developments, commercial properties and industrial installations.

LK Maxitherm is located on the hillside, among detached houses

The market’s widest range of flexible pre-insulated piping systems

Our pre-insulated piping systems combine low heat loss with high flexibility and straightforward installation. The range covers operating temperatures from −30 °C to +180 °C, with solutions developed for a wide variety of heating, cooling and water applications.

LK Maxitherm pre-insulated pipe systems are manufactured under quality and environmental management systems certified according to ISO 9001 and ISO 14001.

Our experienced HVAC and plumbing engineers can provide technical advice and system sizing to help you select the right pipe system for your project. For larger installations, we can also provide basic on-site installer training during pipe laying and installation.

Find the right pre-insulated piping system

Choose the best solution for your application:
Find the right pre-insulated piping system

LK Maxitherm is available in Sweden and Norway

LK Maxitherm pre-insulated pipe systems are available through LK Systems in Sweden and Norway. Contact your local LK Maxitherm sales team for product selection, technical advice, system sizing, quotations and project support.