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Simpler. Smarter. More sustainable.

At LK, we believe there’s a better way to do everything. That’s why – from water, heating and hydronic solutions to pipe extrusion – we push for innovation over status quo and simplicity over complexity. It’s a belief all of us at LK apply to every product and solution we create.

Business units

LK consists of three business units; Water and Heating Systems, Hydronic Solutions and PEX Pipe Extrusion.

Close up of valves

Hydronic Solutions

LK Armatur is a leader in Europe, producing millions of valves per year for the global HVAC market. Beyond individual products, we understand how all parts interact in your complete application.

LK Pex pipes

PEX Pipe Extrusion

LK Pex is a leading OEM manufacturer of high-quality plastic pipes for the HVAC industry, particularly housing applications. Our proprietary production technology for cross-linking PE-Xa tubes gives pipes unique flexibility and compressive strength.

LK Systems Cubic secure

Water and Heating 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 unit, we also provide tailor-made solutions that simplify the installation process even further.

Our History

Founded in 1910 as Lagerstedt & Krantz. LK was originally a wholesale agency and an iron manufacturing company, focused primarily on sales.