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Thanks to their exceptional flexibility, isoplus pre-insulated isopex pipes are perfectly suited for branch lines, secondary lines and small community projects with a continuous operating temperature of maximum 85°C.
isopex pipe is a fixed sandwich structure that consists of pex carrier pipe, flexible polyurethane insulation and a PE-LLD jacket pipe. Polyurethane insulation and PE-LLD jacket pipe provide maximum flexibility, low installation costs and smooth installation without major requirements to the fitter.

isopex is available for district heating (max 6 or 10 bar operating pressure) and internal domestic pipe mains (max 10 bar operating pressure).



District heating, district cooling, community heating, cooling

Carrier pipe material: Cross-linked polyethylene PEX-a according to EN/ISO 15875-2.
Jacket pipe material: Bimodal – PE-LLD
Insulation: Polyurethane foam, blown with cyclopentane

Max. operating temperature 95°C
Max. continuous operating temperature 85°C
Max. operating pressure: 6-10 bar


Heating pipes

Dimensions according to pipe series 5 ISO 4065 (SDR 11)

Max. operating pressure 6 and 10 bar, PN 12.5 at 20°C

Delivered lengths: 75-360 m
Dimensions: 20-125 mm

EVAL oxygen diffusion barrier in compliance with EN/ISO 15875-2.


Domestic water pipes

Dimensions according to pipe series 3.2 ISO 4065 (SDR 7,4)

Max. operating pressure 10 bar, PN20 at 20°C

Delivered lengths: 150-360 m
Dimensions: 20-63 mm


At isoplus you can always get professional support from project start until the piping system is installed.

We can help with planningdesign calculationsinstallation of joints and installlation of leak detection system.

Read more about isoplus service & support.

Contact us

T  +45 6441 6109
E  iso@isoplus.dk

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Case references

Innovative project with new energy station in Tårnby

Tårnby Public Utility paves the way with a new visionary project in which an energy station will become the new gathering point for the area's district heating and cooling. Here the two systems will utilize the energy from the waste water. The plant will be the first...

Five oil villages’ path to sustainable solutions

Lolland Municipality takes the lead in the fight against climate change, as a new district heating project has begun on West Lolland. The municipal’s ambitious climate plan is based on the current energy policy, which includes phasing out oil-fired boilers by 2030 and...

Optimal supply for visionary urban development

In the South Harbour district in Aarhus, the second largest city in Denmark, a new heating transmission line from the Aarhus Heat Plant to Sydhavnsgade is intended to support a major urban development and ensure security of supply to the city. The neighbourhood of the...

Pioneering renewables project in Stirling

Stirling Council's district heating project will be the first in the UK to use a mix of pioneering renewable technologies to turn waste water into energy. A Combined Heat and Power (CHP) unit will supply the network with heating using a heat pump system to deliver...

Greenwich Millennium Village – Sustainable community

Greenwich Millennium Village (GMV) in south-east London is a flagship housing project built on an urban village model to set the standard for 21st century living and to serve as a model for the creation of new communities in England. The initiative aims to create a...

Sheridan College – Optimizing energy consumption

Sheridan College set goals to reduce its energy consumption by 65% and CO2 emission by 45% by 2030. With four separate campuses enrolling 40,000 students, the college focused on reducing the consumption of the two largest campuses. To achieve the project's goals new...

University of Rochester – From steam to hot water

The University of Rochester is one of the country's top-tier research universities. The campuses are home to 200 academic majors, more than 2,000 faculty and instructional staff, and some 10,000 students which yields high requirements for the capacity and safety of...

A sustainable village becomes a reality

In Føns on West Funen, Denmark a vision about sustainable village became a reality. In October 2015, a brand-new wood chip-fueled heating plant was established, which now provides heating for 43 local households. isoplus has supplied the pipes and made the detailed...

HOFOR – great ambitions for the climate

HOFOR provides district heating to the entire City of Copenhagen and covers 98 % of the capital’s heating demand. The supply company has the ambitious goal of delivering 100% CO2 neutral district heating as early as in 2025. Therefore, they are working on replacing...

District cooling of the future in Høje Taastrup

Centralized district cooling gains still more importance both in Denmark and world wide. In Denmark, the town municipality of Høje Taastrup accommodates a large number of business enterprises, and a study demonstrated a strong potential for district cooling (e.g....