Hiline Pre-Insulated Pipe Systems
A range of pre-insulated pipe systems for district heating, cooling and special applications
The result of many decades of research and development, CPV’s Hiline range of bonded pre-insulated pipe systems offers a safe, secure and efficient means of transporting hot and chilled liquids – whatever the application. Proven at countless sites throughout the world, each system has been carefully designed and manufactured to deliver outstanding performance and exceptional levels of reliability.
Climate change is here. With the ever-present threat of extreme weather events, flooding and unseasonable weather patterns, few could honestly deny that change is afoot. In the UK, around half of our energy demands come from the need for heat – whether it’s domestic, commercial or industrial. Governments are now waking up to the fact that by tackling the carbon emissions from this demand, we can make a sizeable contribution to the reduction of global greenhouse gases and help to slowly start to reverse the effects of climate change.
District heating has been identified as a technology that can play a leading role helping lower carbon emissions. A large part of Hiline range of pre-insulated pipes has been developed with this application in mind and, as such, offer exceptional performance and reliability when distributing low-carbon heating and hot water.
The list of applications that are suitable for the Hiline range is vast, but typically, the systems are used above and below-ground, on domestic, commercial and industrial sites for conveying:District heating
- Hot water supplies
- Chilled water
- Steam heating systems
- Potable water
- Process fluids
- Corrosive and hazardous chemicals
- Temperature-sensitive product lines
A key component in the efficiency of the Hiline pipe systems is our choice of CFC-free polyurethane foam to provide excellent levels of insulation – in accordance with the demands of the EN 253 standard. Using cyclopentane as the blowing agent, we achieve very-low lambda levels – which result in much-reduced energy losses to the media being conveyed by the service pipe.
The effects of using a more efficient insulation don’t appear to be much at face value, but factor in a 30-year life-cycle cost of operating the system and the savings – both financial and environmental – mount up significantly. When looking at the life-cycle-costs of a district heating pipe network, the initial capital investment is typically around ten percent – with the biggest cost being the on-going operation.
Hiline systems are manufactured in modern, EN ISO 9001-approved production facilities, using quality-assured materials that comply with all relevant design standards and tolerances for district heating and cooling – such as EN 253, along with any that are pertinent to special applications.
CIBSE/ADE CP1 Heat Networks: Code of Practice for the UK
CPV's Hiline range complies with the requirements of the CIBSE/ADE CP1 Heat Networks: Code of Practice for the UK. Find out more by clicking here.
Research and Development
CPV has been at the forefront of the design and development of specialist pipe systems and its Hiline range is no exception. Not content with just accepting current industry best practice, the company is constantly looking into ways in which it can improve a system’s performance, life expectancy and capital cost.
The following table outlines the current range of Hiline pre-insulated pipe systems.
(metric and imperial sizes)
|20mm (DN)||1,200mm (DN)||130°C (cont)|
|Hiline Copper||Table X and Y copper||15mm (OD)||159mm (OD)||110°C (cont)|
|Hiline GRE||Glass-Reinforced Epoxy (GRE)||32mm (DN)||630mm (DN)||120°C (cont)|
|Hiline Aqua||Choice of rigid polymer pipes||20mm (OD)||315mm (OD)||95°C (cont) (Typical)|
|Hiline Aqua Cool||Polyethylene ( PP and ABS available)||20mm (OD)||315mm (OD)||down to -40°C|
|Hiline Flex||Choice of single, twin or double PE-X-a||25mm (OD)||160mm (OD)||80°C (cont at 6 bar)|
|Hiline FibreFlex||Reinforced Composite PE-Xa service pipe||25mm (OD)||160mm (OD)||80°C (cont at 10 bar)|
CPV's rigid systems are compatible with a range of surveillance systems for use with steel or copper service pipes. There's a choice of the Nordic pulse, Brandes resistance or HDW systems which must be specified at the time of enquiry.
- High-efficiency CFC-free, rigid polyurethane foam insulation
- Different thicknesses available (Series 1, 2 and 3)
- Available with optional trace or maintained heating cables
- Mineral wool insulation layer (Hiline Steam system only)
Tough Outer Casing
- High Density Polyethylene (HDPE) casing on standard systems
- Medium Density Polyethylene (MDPE) casing on flexible systems
- Barrier-pipe casing available for use in contaminated ground
- UV-stable, above-ground casing options available
Strong and secure fittings
- Range of secure joints and fittings available
- HDPE electro-fusion and heat-shrinkable case jointing options