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Hiline Steel

Hiline Steel comprises a traditional range of pre-insulated steel pipe systems that are perfect for district heating and cooling networks.

A rigid, bonded pre-insulated steel pipe system in accordance with EN253. Suitable for district heating, cooling and special applications, it will accept temperatures up to 140°C continuous. Available in metric and imperial sizes – from 20mm to 1,200mm NB, it is supplied in 6 and 12 metre lengths with options for difussion barriers and insulation thicknesses in Series 3, 2 and 1.

Service Pipes

Metric - Seamless Pipe Certified seamless steel pipe manufactured in accordance with EN 10216-2 Grade P235 GH, EN 10216-1/A1 Grade P235 TR1 & P235 TR2, DIN 1629 Grade St 37.0

Metric - Seamed Pipe (Welded) Certified seamed (welded) steel pipe manufactured in accordance with EN 10217-2/A1 Grade P235 GH, EN 10217-5/A2 Grade P235 GH, EN 10217-1 Grade P235 TR1 or P235 TR2, DIN 1626 Grade St 37.0

Technical Specifications

Hiline Steel
Maximum Continuous Operating Temperature +140°C
Peak Operating Temperatures +152°C
Thermal Conductivity 0.022W/mK
Thermal Insulation (S3,S2 and S1) PUR / CFC free
[file-certificate]
Hiline Steel is certified welded carbon steel pipe manufactured in accordance with EN 10217-1:EN 10255 Grade S195T Heavy gauge or Medium gauge (formerly BS1387) & EN 10217-1:API5L Grade B/X42 Schedule 20 or Schedule 40.

Efficient Insulation in Series 3, 2 or 1

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. Available in Series 1, 2 and 3 thicknesses. By increasing the thickness of the insulation, significant cost savings can be made for the system operation.

Available with Diffusion Barrier

Hiline Steel systems are available with a foil diffusion barrier layer between the casing and the PUR foam insulation. This improves the system's performance over its lifetime by preventing the gas in PUR foam insulation from slowly diffusing through the outer casing and being replaced by air.

Robust and Adaptable Joints

The Hiline Steel service pipe is joined by welding. The HDPE outer casing can be joined using the proven Hiline range of wrap-around heat-shrink or electro-fusion couplings to ensure the very tightest of joints to protect against the ingress of ground water.

Complete System

Hiline Steel has a comprehensive range of pre-fabricated bends, tees, fittings and accessories that enable it to be adapted to meet all possible configurations.

Hiline Steel - Single

Size OD Casing (Series 2) Casing (Series 3)
d [mm] D [mm] D [mm]
20 26.9 90 110
25 33.7 110 125
32 42.4 125 140
40 48.3 125 140
50 60.3 140 160
65 76.1 160 200
80 88.9 200 225
100 114.3 225 250
125 139.7 250 315
150 168.3 315 355
200 219.1 355 400
250 273 450 500
300 323.9 500 560
350 355.6 560 630
400 406.4 630 670
450 457 630 710

Hiline Steel - Twin

Size OD Casing (Series 2) Casing (Series 3)
d [mm] D [mm] D [mm]
20 26.9 140 160
25 33.7 160 180
32 42.4 180 200
50 60.3 225 250
65 76.1 250 280
80 88.9 280 315
100 114.3 355 400
125 139.7 450 500
150 168.3 500 560
200 219.1 630 710

Engineering and Design Support

Design and Stress Analysis

There are many factors that will affect the long-term integrity of a pre-insulated pipe system. Correctly identifying and dealing with the potential for thermal expansion of the pipe system is a critical element of the design process and we employ state-of-the-art sisKMR specialist stress analysis software. This package allows us to configure the pipe routes to keep the thermal expansion within safe limits and conform to the requirements of the EN 13941 standard for Design and installation of pre-insulated bonded pipe systems for district heating.

Stress Analysis Example

Something as simple as adding in an unplanned branch connection can seriously impair a system’s ability to cope with the huge forces exerted on the pipe from thermal expansion. To put it into context, a 200-metre length of DN250mm pre-insulated steel pipe, heated to an operating temperature of 120°C will expand by around 150mm – exerting a stress of some 171MPa – the equivalent of 52 tonnes.

Please contact us to find out more and access our advanced stress analysis services for your project.

Find out more

  • Training and Support

    As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

    Read more

  • CPD Programme

    CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

    Read more

  • Electronic Surveillance Systems

    We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

    Read more

  • CarboSeal Relining System

    We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.

    Read more

The Hiline Range

Downloads

Product Catalogues

Installation Guides

Operating Manuals

Read more …Hiline Steel

Written by Administrator on . Posted in Pages.

Hiline GRE

A rigid, pre-insulated glass-reinforced epoxy (GRE) pipe system capable of operating at temperatures and pressures previously only achievable with steel systems, it offers outstanding thermal performance coupled with exceptional levels of reliability

A composite pipe manufactured from helical-wound glassfibre reinforced epoxy material that is designed for use in heating and cooling networks. Offering a operational service life of 50+ years when operating at 95°C and 10 bar, the service pipe will accommodate pressures of up to 16 bar and details of service life at other temperature and pressure combinations can be supplied on request.

Standards

The GRE service pipe is manufactured in line with procedure ISO 14692; 1-4 and ASTM D 2310 class 11FX1 and ASTM D 2996, indicating type, grade, class and long term pressure strength classification for the GRE pipe axial load resistant type of pipe being RTRP-11 FW1. Hiline GRE pre-insulated pipes and fittings for thermal utilities are manufactured within an ISO 9001 accredited environment, generally in accordance with the requirements of EN 253 and in compliance with EN 448, EN 488, EN 489 and EN 13941.

Technical Specifications

Hiline GRE
Maximum Continuous Operating Temperature +95°C
Operational Service Life +50 years
Peak Operating Temperatures up to +120°C
Maximum Operating Pressure 16 Bar
Thermal Conductivity 0.027 W/mK
Service Pipe GRE
Thermal Insulation PUR / CFC free / water blown

Tough Outer Casing

Manufactured in HDPE to the requirements of the EN253 standards, the tough and resilient outer casing enables the pipe to be buried directly in the ground.

Tough Outer Casing

Manufactured in HDPE to the requirements of the EN253 standards, the tough and resilient outer casing enables the pipe to be buried directly in the ground.

Complete System

Hiline GRE has a comprehensive range of pre-fabricated bends, tees, fittings and accessories that enable it to be adapted to meet all possible configurations – including transitions to other types of pre-insulated pipe systems – such as Hiline Steel or Hiline Flex.

Hiline GRE can be offered as off-site pre-fabricated fittings and spool assemblies to meet a client’s bespoke requirements – significantly reducing installation time and cost

Robust and Adaptable Joints

The Hiline GRE service pipe is joined by means of an adhesive-bonded taper socket and spigot technique that provides secure and reliable connections that will exceed the life expectancy of the pipe system. The HDPE outer casing can be joined using the proven Hiline range of wrap-around heatshrink or electro-fusion couplings to ensure the very tightest of joints to protect against the ingress of ground water.

Robust and Adaptable Joints

The Hiline GRE service pipe is joined by means of an adhesive-bonded taper socket and spigot technique that provides secure and reliable connections that will exceed the life expectancy of the pipe system. The HDPE outer casing can be joined using the proven Hiline range of wrap-around heatshrink or electro-fusion couplings to ensure the very tightest of joints to protect against the ingress of ground water.

Trace Heating and Leak Detection Options

Hiline GRE is available with the option of integrated trace heating cables to protect the media temperate and leak detection systems that warn of moisture ingress into the insulation

Hiline GRE

OD [mm] PN [bar] Size [mm] Bore/s [mm] Casing [mm]
30.2 PN50 DN25 25.0 110
45.2 PN50 DN40 40.0 125
55.2 PN40 DN50 50.0 140
86.4 PN32 DN80 80.0 200
106.4 PN25 DN100 100.0 225
156.4 PN20 DN150 150.0 315
208.2 PN20 DN200 200.0 355
258 PN16 DN250 250.0 450
309.2 PN16 DN300 300.0 500
411.8 PN16 DN400 400.0 630
463 PN16 DN450 450.0 630
514.2 PN16 DN500 500.0 710
616.8 PN16 DN600 600.0 900
* Based on EN1057 (Table X equiv.) Other specifications available on request ** Based on Series 2 insulation

  • Training and Support

    As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

    Read more

  • CPD Programme

    CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

    Read more

  • Electronic Surveillance Systems

    We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

    Read more

  • CarboSeal Relining System

    We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.

    Read more

The Hiline Range

Downloads

Product Catalogues

Read more …Hiline GRE

Written by Administrator on . Posted in Pages.

Hiline eFlex

A highly-efficient pre-insulated PE-Xa pipe system that’s perfect for district heating and cooling applications.

The cross-linked polyethylene (PE-Xa) service pipe offers exceptional performance at temperatures up to 95°C and pressures up to 6 bar, making it perfect for district heating. Available in single and twin service pipe configurations, an integral EVOH barrier prevents oxygen diffusion into the media.

High-Performance Insulation

A layer of CFC-free flexible polyurethane foam puts the insulation in a league of its own – with minimal heat loss – Lambda value of 0.0216 W/mK (at 50°C). Unlike inferior pipe systems with an air gap, Hiline e-Flex’s composite construction – with its service pipe and outer casing bonded together by the foam insulation – means that thermal expansion can be ignored. Series 2 increased thickness insulation is also available.

Technical Specifications

eFlex
Max continuous operating temperature (30 years) 80°C
Max peak operating temperature 95°C
Maximum Operating Pressure (30 years) 6 bar at 80°C
Thermal Conductivity ≤ 0.0210 W/mK
Service pipe Cross-linked polyethylene (PE-Xa)
Outer casing Seamlessly extruded corrugated LDPE
Insulation PUR (CFC-free) - available in Series 1 and 2 insulation thicknesses
[file-certificate]
The eFlex pipe system is certified in line with EN 15632-1/2 as well as EN 12318-2, DIN 16892 & DIN 16893

Simple Installation

Delivered to site coiled in continuous lengths of up to 1,000 metres, on-site joints can be kept to a minimum making installation a quick process.

Robust and Adaptable Joints

The PEX-LOK axial compression service pipe jointing system is a fit-and-forget solution that offers the very highest levels of joint tightness and reliability.

Robust and Adaptable Joints

The PEX-LOK axial compression service pipe jointing system is a fit-and-forget solution that offers the very highest levels of joint tightness and reliability.

Shell Sleeves

Casing joints are similarly easy with shell sleeve kits that are supplied with all the necessary components to ensure quick and easy installation.

Cut, Coiled and Terminated!

To save the requirement of hiring specialist tools on simple projects, we can offer our clients a pipe termination service where our team can cut and coil your pipe to the exact length required, fit a wall entry sleeve, heat-shrink end cap and press-fit your choice of termination – typically a threaded union. 
Please contact our technical sales team for details

Contact our Technical Sales Team

Hiline eFlex - UNO

Size Service pipe Nominal Outer casing
(d x s mm) (DN mm) (D mm)
25/ 76 25 x 2.3 20.4 78 x 1.9
32/ 76 32 x 2.9 26.2 78 x 1.9
40/ 91 40 x 3.7 32.6 93 x 2.1
50/111 50 x 4.6 40.8 113 x 2.3
63/126 63 x 5.8 51.4 128 x 2.7
75/142 75 x 6.8 61.4 143 x 2.9
90/162 90 x 8.2 73.6 163 x 3.2
110/162 110 x 10.0 90.0 163 x 3.2
125/182 125 x 11.4 102.2 183 x 3.3

Hiline eFlex - DUO

Size Service pipe Nominal Outer casing
(d x s mm) (DN mm) (D mm)
25 + 25/91 2 x 25 x 2.3 20.4 + 20.4 93 x 2.1
32 + 32/111 2 x 32 x 2.9 26.2 + 26.2 113 x 2.3
40 + 40/126 2 x 40 x 3.7 32.6 + 32.6 128 x 2.7
50 + 50/162 2 x 50 x 4.6 40.8 + 40.8 163 x 3.2
63 + 63/182 2 x 63 x 5.8 51.4 + 51.4 183 x 3.3
75 + 75/202 2 x 75 x 6.8 61.4 + 61.4 202 x 3.3

  • Training and Support

    As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

    Read more

  • CPD Programme

    CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

    Read more

  • Electronic Surveillance Systems

    We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

    Read more

  • CarboSeal Relining System

    We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.

    Read more

The Hiline Range

Downloads

Product Catalogues

Operating Manuals

Read more …Hiline eFlex

Written by Administrator on . Posted in Pages.

FibreFlex Pro

A highly-efficient reinforced pre-insulated pipe system that’s perfect for district heating applications at higher pressures than a standard PE-Xa pipe.

Hiline FibreFlex Pro is a pre-insulated, flexible pipe system with fibre-reinforced service pipe for use up to 115°C and 10 bar. Thanks to the high-temperature aramid fibre mesh, the FibreFlex Pro pipe system can be used up to a maximum operating temperature of 115 ° C and a pressure of up to 10 bar. The FibreFlex Pro pipe system thus combines the advantages of a flexible pipe system with the operating properties of traditional steel pipe systems and is therefore an innovative, cost-effective alternative.

Efficient Insulation

FibreFlex Pro pipes are insulated in one continuous manufacturing process using a CFC-free bonded polyurethane foam with an outstanding thermal conductivity value of l≤0.021 W/mK at 50°C.

As the insulation layer has a lower thermal conductivity than conventional pre- insulated steel pipes (l=0.07 W/mK), in diameters up to 80 mm, the FibreFlex Pro system's heat loss is lower than insulation series S3 pipes and in larger diameters, heat loss is lower than series S2 pipes (see graph).

When compared to conventional, bonded preinsulated PE-Xa pipes, the heat loss can be up to 17% lower for the FibreFlex system and even better when compared to non-bonded pipes.

Technical Specifications

FibreFlex Pro
Max continuous operating temperature (30 years) 95°C
Max peak operating temperature 115°C
Maximum Operating Pressure (30 years) 10 bar at 95°C
[file-certificate]
The FibreFlex Pro pipe system is certified to OFI CERT ZG 200-2 Class Technical Specification, in line with EN 15632-2

Secure Joining System

The FibreFlex Pro system is quick and easy to join using specially designed compression fittings, incorporating a unique polymer sleeve, which is inserted between the fitting’s outer sleeve and the service pipe. A steel insert is then easily fitted inside the pipe, without the need for the pipe end to be expanded. This provides a robust connection with maximum joint integrity.

Complete System

The FibreFlex Pro system has a comprehensive range of fittings and accessories to ensure that it can be adapted to suit all possible configurations – including transitions to pre-insulated pipe systems with different types of service pipe – such as steel.

Complete System

The FibreFlex Pro system has a comprehensive range of fittings and accessories to ensure that it can be adapted to suit all possible configurations – including transitions to pre-insulated pipe systems with different types of service pipe – such as steel.

On-Site Flexibility

The service pipe’s reduced wall thickness the system more flexible to install, significantly increasing its range of application in district heating systems.

Hiline FibreFlex Pro - UNO

NOTE: Series 1 insulation thicknesses are shown below, however Series 2 insulation thicknesses are also available.

Size Service pipe Nominal Outer casing
(d x s mm) (DN mm) (D mm)
32/ 76 32.0 x 2.5 27.0 76
40/ 91 40.0 x 2.8 34.4 91
50/111 47.6 x 3.6 40.4 111
63/126 58.5 x 4.0 50.5 126
75/142 69.5 x 4.6 60.3 142
90/162 84.0 x 6.0 72.0 162
110/182 101.0 x 6.5 88.0 182
125/182 116.0 x 6.8 102.4 182
140/202 127.0 x 7.1 112.8 202
160/225 144.0 x 7.5 129.0 225

Hiline FibreFlex Pro - DUO

NOTE: Series 1 insulation thicknesses are shown below, however Series 2 insulation thicknesses are also available.

Size Service pipe Nominal Outer casing
(d x s mm) (DN mm) (D mm)
32 + 32/111 2 x 32.0 x 2.5 27.0 + 27.0 111
40 + 40/126 2 x 40.0 x 2.8 34.4 + 34.4 126
50 + 50/126 2 x 47.6 x 3.6 40.4 + 40.4 126
63 + 63/182 2 x 58.5 x 4.0 50.5 + 50.5 182
75 + 75/202 2 x 69.5 x 4.6 60.3 + 60.3 202
90 + 90/225 2 x 84.0 x 6.0 72.0 + 72.0 225

  • Training and Support

    As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

    Read more

  • CPD Programme

    CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

    Read more

  • Electronic Surveillance Systems

    We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

    Read more

  • CarboSeal Relining System

    We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.

    Read more

The Hiline Range

Downloads

Product Catalogues

Read more …FibreFlex Pro

Written by Administrator on . Posted in Pages.

Hiline FibreFlex

A highly-efficient reinforced pre-insulated pipe system that’s perfect for district heating applications at higher pressures than a standard PE-Xa pipe.

Hiline FibreFlex is a pre-insulated, flexible pipe system, with a service pipe made of fibre-reinforced, cross-linked polyethylene and PUR thermal insulation. Thanks to the aramid fibre mesh, the pipe wall thicknesses could also be reduced and, due to the resulting smaller outside diameter, the insulation could be improved. Compared to conventional flexible pipe systems, media can be transported at a pressure of 10 bar at a continuous operating temperature of + 80 °C.

Efficient Insulation

FibreFlex pipes are insulated in one continuous manufacturing process, using a CFC-free bonded polyurethane foam with an outstanding thermal conductivity value of l≤0.021 W/mK at 50°C. As the insulation layer has a lower thermal conductivity than conventional pre-insulated steel pipes (l=0.07 W/mK), in diameters up to 80mm, FibreFlex system’s heat loss is lower than insulation series S3 pipes and in larger diameters, heat loss is lower than series S2 pipes. When compared to conventional, bonded pre-insulated PE-Xa pipes, the heat loss can be up to 17% lower for the FibreFlex systems and even better when compared to non-bonded pipes.

Technical Specifications

FibreFlex
Max continuous operating temperature (30 years) 80°C
Max peak operating temperature 95°C
Maximum Operating Pressure (30 years) 10 bar at 80°C
[file-certificate]
The FibreFlex pipe system is certified to OFI CERT ZG 200-2 Class Technical Specification, in line with EN 15632-2

Secure Joining System

FibreFlex system is quick and easy to join using specially designed compression fittings, incorporating a unique polymer sleeve, which is inserted between the fitting’s outer sleeve and the service pipe. A steel insert is then easily fitted inside the pipe, without the need for the pipe end to be expanded. This provides a robust connection with maximum joint integrity.

Complete System

The Hiline FibreFlex system has a comprehensive range of fittings and accessories to ensure that it can be adapted to suit all possible configurations – including transitions to pre-insulated pipe systems with different types of service pipe – such as steel.

Complete System

The Hiline FibreFlex system has a comprehensive range of fittings and accessories to ensure that it can be adapted to suit all possible configurations – including transitions to pre-insulated pipe systems with different types of service pipe – such as steel.

On-Site Flexibility

The service pipe’s reduced wall thickness the system more flexible to install, significantly increasing its range of application in district heating systems.

Hiline FibreFlex - UNO

NOTE: Series 2 insulation thicknesses are shown below, however Series 1 insulation thicknesses are also available.

Size Service pipe Nominal Outer casing
(d x s mm) (DN mm) (D mm)
25/ 91 25.0 x 2.2 20.6 91
32/ 91 32.0 x 2.5 27.0 91
40/ 111 40.0 x 2.8 34.4 111
50/111 47.6 x 3.6 40.4 111
63/126 58.5 x 4.0 50.5 126
75/142 69.5 x 4.6 60.3 142
90/162 84.0 x 6.0 72.0 162
110/182 101.0 x 6.5 88.0 182
125/202 116.0 x 6.8 102.4 202
140/202 127.0 x 7.1 112.8 202
160/225 144.0 x 7.5 129.0 225

Hiline FibreFlex - DUO

NOTE: Series 2 insulation thicknesses are shown below, however Series 1 insulation thicknesses are also available.

Size Service pipe Nominal Outer casing
(d x s mm) (DN mm) (D mm)
25 + 25/ 111 2 x 25.0 x 2.2 20.6 + 20.6 111
32 + 32/126 2 x 32.0 x 2.5 27.0 + 27.0 126
40 + 40/142 2 x 40.0 x 2.8 34.4 + 34.4 142
50 + 50/162 2 x 47.6 x 3.6 40.4 + 40.4 162
63 + 63/182 2 x 58.5 x 4.0 50.5 + 50.5 182
75 + 75/202 2 x 69.5 x 4.6 60.3 + 60.3 202

  • Training and Support

    As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

    Read more

  • CPD Programme

    CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

    Read more

  • Electronic Surveillance Systems

    We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

    Read more

  • CarboSeal Relining System

    We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.

    Read more

The Hiline Range

Downloads

Product Catalogues

Read more …Hiline FibreFlex

Written by Administrator on . Posted in Pages.

Hiline Clover

CPV’s next generation pre-insulated pipe system brings to market the most efficient solution to further enable heat networks to play their leading role in the drive to decarbonise heat

As a pioneer in the advancement of polymer piping systems, CPV has developed an extensive portfolio of solutions that have served both past and current heat network generations, challenging convention and driving efficiencies. Built on this experience, Hiline Clover now offers the optimal solution to drive the efficiency of fourth and even fifth-generation ambient loop heat networks.

Innovative Joints

Clover service pipe jointing is by means of proven fusion welding by either butt-fusion or electro-fusion technologies. Casing pipe joints also offer the option of electro-fusion oversleeves. An innovative Clover ClickWeld system allows for pipe and fitting assemblies to be supplied with factory-fitted electro-fusion connections – offering fast track site installation as a push-lock-fuse process.

Easier to Integrate

Hiline Clover is part of a wider range of advanced pre-insulated pipe systems that provide seamless interconnectivity. This also applies to other manufacturers' systems with service pipes in materials such as steel, polymers, etc.

Easier to Integrate

Hiline Clover is part of a wider range of advanced pre-insulated pipe systems that provide seamless interconnectivity. This also applies to other manufacturers' systems with service pipes in materials such as steel, polymers, etc.

Tough Outer Casing

Hiline Clover is distinguishable by its light grey outer casing with permanent, orange-coloured identification stripes. This casing is manufactured from a high-strength polymer material to provide exceptional mechanical properties and resistance to all ground conditions for a full, uncompromised service life.

Lowering CAPEX and OPEX

Not only more environmentally aligned to meet net-zero carbon heating demands over that of conventional products, but through innovation, Hiline Clover will also help drive down the cost of both the installation and the operation of heat networks. Using technologically advanced and proven polymers technologies, it meets and exceeds all the criteria demanded of future generations of heat network distribution systems.

Fast & Secure Joining

Hiline Clover pipes are joined with a proven, fusion welding technology and so can be supplied as spigot-ended pipes and fittings assemblies with the options of either butt-fusion or electrofusion welding.

Alternatively, pipes and fitting assemblies can be supplied with the unique factory fitted ClickWeld system which allows for pipes to be clicked and locked together and then fusion welded with integrated electrofusion technology. This reduces the number of site welds and therefore installation times and risk.

These polymer fusion welding technologies are more cost effective than conventional steel welding and will help address the significant skill shortage that challenges the industry.

Heat Loss

Hiline Clover utilises a water-blown PUR foam with a Lambda value of 0.021 W/mK and is manufactured with an insulation thickness aligned with Series 2 within EN253 standards. When compared with typical pre-insulated carbon steel Hiline Clover demonstrates an improved thermal efficiency and therefore reduces heat losses.
Clover Savings vs Traditional Steel Systems
Hiline Clover
Maximum Continuous Operating Temperature +80°C
Operational Service Life +50 years
Peak Operating Temperatures up to +95°C
Maximum Operating Pressure 10 Bar
Thermal Conductivity 0.027 W/mK
Service Pipe PP-RCT
Thermal Insulation PUR / CFC free / water blown

Comprehensive Range

Hiline Clover offers sizes from DN20 to DN250, with continuous operating temperatures up to 80°C and peaks up to 95°C. The system’s performance capabilities and trouble-free 50-year service life expectancy are validated by compliance with international material performance standards.
It is compatible with CPV’s other ranges of pre-insulated composite polymer pipe systems to provide both flexible pipes and large diameter pipes up to DN600.

Efficient insulation

Arguably the most thermally-efficient pre-insulated piping solution, Hiline Clover is insulated with environmentally-friendly water-blown PUR insulation, having exceptional thermal conductivity values and configured to minimise heat loss.

Efficient insulation

Arguably the most thermally-efficient pre-insulated piping solution, Hiline Clover is insulated with environmentally-friendly water-blown PUR insulation, having exceptional thermal conductivity values and configured to minimise heat loss.

Unique DUO

With both the flow and return pipes having a unique ‘stadium’ shaped single casing pipe, it offers maximum thermal efficiency whilst minimising piping insulation materials. This allows trench widths to be reduced and thereby lowering the cost of installation.

Hiline Clover UNO

Size Bore/s (mm) Casing (mm)
DN20 19.4 110
DN25 24.9 110
DN32 31.1 125
DN40 38.9 125
DN50 49.0 140
DN50/65 58.3 160
DN65/80 70.0 180
DN80/100 85.6 225
DN100 97.2 250
DN125 124.4 280
DN150/200 175.0 355
DN200/250 217.8 450
DN250 245.0 500
* Bore dimensions based on SDR9 pipe and with also SDR11 available on request

Hiline Clover DUO

Size Bore/s (mm) Casing (mm)
2 x DN20 2 x 19.4 110 / 168
2 x DN25 2 x 24.9 110 / 171
2 x DN32 2 x 31.1 125 / 200
2 x DN40 2 x 38.9 125 / 205
2 x DN50 2 x 49.0 140 / 234
2 x DN50/65 2 x 58.3 160 / 268
2 x DN65/80 2 x 70.6 180 / 305
2 x DN80/100 2 x 85.6 225 / 380
* Bore dimensions based on SDR9 pipe and with also SDR11 available on request

Hiline Clover Ambient

Size Bore/s (mm)
DN40 40.9
DN50 51.5
DN50/65 61.4
DN65/80 73.6
DN80/100 90.0
DN100 102.3
DN125 130.9
DN150/200 184.1
DN200/250 229.1
DN250 257.7
* Bore dimensions based on SDR11 pipe and with also SDR9 available on request

  • Training and Support

    As manufacturer, it’s important to us to ensure that our systems deliver exceptional performance throughout their working life. Therefore, we have established an array of world-class support services that help our clients every step of the way.

    Read more

  • CPD Programme

    CPV Ltd is CIBSE-accredited provider of CPD courses for Pre-insulated Heat Network Design and Specification

    Read more

  • Electronic Surveillance Systems

    We offer full a range of systems and supporting services for the main types of surveillance technologies, including the Nordic, Brandes and HDW systems.

    Read more

  • CarboSeal Relining System

    We are the UK representatives of the innovative CarboSeal relining system for buried heat networks. This enables failing networks to be repaired without the need to excavate the entire sections of pipe.

    Read more

The Hiline Range

Downloads

Product Catalogues

Read more …Hiline Clover

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