Hercuglas Heatsaver pre-insulated pipe

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District Heating Pipe

We offer the markets largest range of pipes and components for district heating and amount other things we have developed a continuous production method which reduces the use of resources. Compared to traditionally manufactured pipes, this gives lower density and improved insulation properties.


Hercuglas Heatsaver pre-insulated pipe is great for:

Never before has there been so much to offer in the district heating market. Our comprehensive product range comprises the very best on the market: Flexible and installation-friendly systems of all kinds, a varied joint program including a welding joint, straight joints, bending joints, T-joints of cross-linked PE for foaming or with half-shells, and straight pipes with unique insulation properties.


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  • Homes
  • Boiler Houses
  • Barns
  • Pools
  • Green Houses
  • Manufacturing Facilities
  • Outdoor Wood Furnaces
  • Versatility
  • High quality
  • Pre-insulated pipes
  • Diffusion barrier
  • Lightweight
  • Absolutely corrision-fee
  • Environmentally-friendly construction
  • Maintenance-free system
  • Long working life
  • Large as-supplied lengths (up to 100m)
  • Single, double, and quadruple pipes
  • Wide range of applications as regards temperature and pressure.

Dual PEX is a pre-insulates flexible pipe. 

ADVANTAGES - insulated dual PEX-Flex
  • The thick outer jacket provides extra protection for interior insulation and pipe.
  • Low thermal conductivity of polyurethane foam offers high insulation performance, saving fuel and "stocking performance".
  • No underground seams.
  • Installs quickly and easily.
  • No drainage tile, gravel or sand backfill or deep/wide trenching required.
  • The flexibility of the pipe eliminates the use of elbows.
  • The PEX pipes have a diffusion barrier made of EVAL, preventing oxygen from entertaining the system.
  • Lasts indefinitely, paying for itself many times over.

Advantages of Pex Pipe:

    1. Flexibility: PEX pipe is highly flexible and can be bent around corners and obstacles without the need for many fittings, reducing the risk of leaks.
    2. Corrosion Resistance: PEX is resistant to corrosion, which prolongs the lifespan of the pipe and reduces the risk of rust or mineral buildup that can occur in metal pipes.
    3. Freeze Resistance: PEX is more resistant to freezing than traditional metal pipes. It can expand slightly without bursting, making it a good choice for cold climates.
    4. Reduced Noise and Water Hammer: PEX pipes tend to reduce water hammer and noise compared to metal pipes, which can be especially beneficial for plumbing systems.
    5. Cost and Time Savings: PEX is often faster to install than traditional pipes due to its flexibility and the use of fewer fittings. This can translate to lower labor costs.
    6. Less Heat Loss: PEX's insulating properties result in less heat loss in hot water supply lines, contributing to energy efficiency.

Types of PEX Pipe

Types of PEX Pipe: There are three main types of PEX pipe, each color-coded for identification purposes:

  1. PEX-A (Engel Method): Cross-linking is done through a chemical method known as the Engel method. PEX-A is the most flexible type and is less prone to stress fractures. It can be repaired more easily if it gets kinked.
  2. PEX-B (Silane Method): Cross-linking is achieved by exposing the PEX material to electron beams. PEX-B is less flexible than PEX-A but still suitable for most plumbing applications.
  3. PEX-C (Irradiation Method): Cross-linking is done through a high-energy electron method. PEX-C is stiffer than PEX-A and PEX-B but maintains its shape well when bent.

PEX Fittings: PEX piping uses specific fittings, often made from brass or other compatible materials. Common types of fittings include crimp, clamp (also known as cinch), and push-fit fittings. These fittings create secure connections between PEX pipes and are designed to withstand pressure and temperature variations.

Applications of PEX Pipe:

  1. Potable Water Supply: PEX is used for cold and hot water supply lines in residential and commercial buildings.
  2. Radiant Heating Systems: PEX tubing is used in hydronic radiant floor heating systems to circulate warm water through the floor, providing efficient and even heat distribution.
  3. Plumbing Systems: PEX is commonly used for plumbing systems, replacing traditional copper or PVC pipes in many cases.
  4. Snow and Ice Melting Systems: PEX tubing can be used in outdoor systems to melt snow and ice on driveways, walkways, and roofs.
  5. Chilled Water Systems: PEX can also be used for circulating chilled water in cooling systems.

Installation Considerations:

    • Proper tools, such as crimping or cinching tools, are necessary for secure connections.
    • PEX should be protected from direct sunlight and UV exposure, which can degrade the material over time.
    • Local building codes and regulations should be followed during installation.
    • Proper insulation is important in hydronic heating systems to prevent heat loss.

Need help? Book a call at a time to suit your schedule

The Hercuglas team is delighted to talk with you.

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