ARMOPEX is the new high-performance, flexible pipe system designed to meet the highest requirements in local and district heating applications. Developed for medium-pressure networks, ARMOPEX strategically bridges the gap between conventional PEX pipes and more cost-intensive metallic pipe systems, setting new benchmarks in safety, efficiency and future readiness.
Thanks to the aramid-reinforced PE-Xa inner pipe with integrated aluminium barrier layer, ARMOPEX is designed for operating temperatures up to 115 °C and operating pressures up to 12 bar (PN12) in accordance with temperature profile TR4 of TS 17889. These significantly higher pressure and temperature reserves ensure maximum operational reliability – even over long pipe runs, geodetic height differences or dynamic load peaks within district heating networks.
A key performance feature of ARMOPEX is its outstanding energy efficiency. The high-quality PUR insulation with the world’s lowest thermal conductivity of λ = 0.0199 W/mK (at 50 °C) reduces heat losses to a record low. This not only lowers operating costs, but also actively supports sustainable heat networks with lower flow temperatures.
ARMOPEX is consistently designed to meet the demands of modern and future heat networks. Low to medium system temperatures, higher flow rates, decentralized inputs, and changing flow directions place new requirements on pipe systems in local and district heating. With its high pressure reserves, mechanical stability and flexibility, ARMOPEX as a composite pipe system is ideal for dynamic network structures, hybrid networks, and integration of renewable energy sources such as heat pumps, geothermal or solar thermal energy.
In addition to performance and efficiency, ARMOPEX excels in installation convenience. Delivery in long coils enables largely joint-free underground installation, reducing installation time, minimizing potential errors, and sustainably lowering installation costs. The robust, UV-resistant outer LLD-PE jacket reliably protects the system from environmental influences.
ARMOPEX is designed for a service life of over 50 years and complies with the relevant European standards for pre-insulated flexible pipe systems. This provides planners, installers, and network operators with maximum planning reliability and a long-term cost-effective investment with high safety reserves.
The robust ARMOPEX system is used wherever fluids need to be transported safely, efficiently, and without disruption.
✔ House-to-house connections
✔ Local and district heating
✔ Industrial applications
✔ Agriculture
✔ Food technology
✔ Irrigation
✔ Mining
✅ World’s lowest thermal conductivity of λ = 0.0199 W/mK (at 50 °C)
✅ Suitable for operating temperatures up to 115 °C
✅ Operating pressure up to 12 bar (PN12) according to TR4 TS 17889
✅ Maximum operational safety, even for long pipe runs and load peaks
✅ No complex welding – significantly reduces installation time
✅ Minimal number of joints – reduces heat loss and leakage risk
✅ Supplied in long coils for largely joint-free installation
✅ UV-resistant outer LLD-PE jacket
✅ Designed for a service life of over 50 years
With ARMOPEX, we combine Swiss engineering, decades of experience, and uncompromising quality standards. The result is a future-proof pipe system that already meets the increasing demands of modern energy infrastructures.
An aramid-reinforced PE-Xa pipe is a plastic pipe made of cross-linked polyethylene (PE-Xa) that is additionally reinforced with aramid fibres. This combination provides high flexibility with exceptional strength.
PE-Xa pipes are permeable to gases, allowing oxygen from the environment to enter the heat transfer medium. In local and district heating systems, this can lead to additional heat loss and faster wear. An integrated aluminium barrier completely prevents oxygen ingress, protecting the district heating network from heat loss and significantly contributing to operational safety and the system’s service life.
• Simple and reliable connection technology
• Fast and practical additional insulation with clip shells and distribution chambers
• Standardised and customised fittings
• 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