• Hiline FibreFlex

    Hiline FibreFlex

    A pre-insulated polymer service pipe reinforced with high-modulus aramid reinforcing mesh. This introduces the opportunity for improved safety factors, operation at higher temperature/pressure and extended service life.

    • Up to 95℃ (peak)
    • Up to 10 bar at 80℃ (cont.)
    • Single or double service pipe
    • A complete system
  • Improved thermal performance

    Improved thermal performance

    With the same internal service pipe dimensions as traditional flexible pre-insulated pipe systems, the reduced wall thickness provides more room for insulation and therefore improved thermal efficiency.

    • Reduced heat loss
    • Saving energy
    • Lowering operating costs
    • Improving CO2 emissions

Hiline FibreFlex - Pre-insulated Reinforced Polymer Pipe System

A high-performance reinforced pre-insulated flexible pipe system for district heating 

Hiline FibreFlex cleverly combines a polymer service pipe liner and a high-modulus aramid reinforcing mesh in a composite construction, protected by an oxygen diffusion barrier layer. These introduce the opportunity for improved safety factors, operation at higher temperature/ pressure combinations, extended service life and reduced heat loss.

Composite Construction

PE-Xa liner

Adhesive layer

Aramid fibre mesh

Service pipe jacket with oxygen barrier

PUR foam insulation

LDPE outer casing

  • PE-Xa liner

  • Adhesive layer

  • Aramid fibre mesh

  • Service pipe jacket with oxygen barrier

  • PUR foam insulation

  • LDPE outer casing

    Overview

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

    • Maximum continuous operating temperature: 80°C
    • Maximum temperature (peak): 95°C
    • Maximum operating pressure: 10 bar at 80°C
    • Thermal conductivity: ≤ 0.0210 W/mK
    • Service pipe: cross-linked polyethylene (PE-Xa) reinforced with aramid fibre mesh
    • Insulation: PUR (CFC-free) - available in Series 1 and 2 thicknesses
    • Outer casing: seamlessly extruded corrugated LDPE

    Available in sizes ranging from  25mm up to 160mm (OD), Hiline FibreFlex is supplied on rolls of up to 550 metres in length (25mm OD). Single and double service pipe configurations available within a single outer casing pipe.

    Complete System

    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.
    Greater Thermal Efficiency

    Greater Thermal Efficiency

    With the same internal service pipe dimensions as traditional flexible pre-insulated pipe systems, the reduced wall thickness provides more room for insulation and therefore improved thermal efficiency. When comparing a standard PE-Xa pipe with Series 1 insulation against a Hiline FibreFlex pipe with Series 1 insulation, tests have revealed a 17% lower heat loss in a FibreFlex system. Over many decades of operation, this will offer significant reductions in operating cost and lower carbon emissions.
    Strong and secure fittings

    Strong and secure fittings

    With a fit-and-forget axial compression joint system for service pipe connections and a robust clip-together solution for casing joints, the systems can be configured to meet all site requirements with ease.
    Tough outer casing

    Tough outer casing

    With a tough corrugated LDPE outer casing, all Hiline Flex pipe systems can be buried directly in the ground and their flexibility allows for on-site obstacles to be easily worked around.
    Quality and Standards

    Quality and Standards

    The FibreFlex pipe system is certified OFI CERT ZG 200-2 Class A Technical Specification (in line with EN 15632-2).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, along with any that are pertinent to special applications.
    Simple Installation

    Simple Installation

    Delivered to site coiled in continuous lengths of up to 550 metres, on-site joints can be kept to a minimum making installation a quick and secure process.

    Hiline FibreFlex heating 10 bar - DUO

    TypeService PipesNominalOuter CasingMinimumMax Length
      d x s DN D Bending Radius  
      mm  

    mm

    m m
    25 + 25/ 111 2 x 25.0 x 2.2 20.6 + 20.6 111 0.90 410
    32 + 32/126 2 x 32.0 x 2.5 27.0 + 27.0 126 1.00 300
    40 + 40/142 2 x 40.0 x 2.8 34.4 + 34.4 142 1.10 225
    50 + 50/162 2 x 47.6 x 3.6 40.4 + 40.4 162 1.20 149
    63 + 63/182 2 x 58.5 x 4.0 50.5 + 50.5 182 1.30 86
    75 + 75/202 2 x 69.5 x 4.6 60.3 + 60.3 202 1.40 80

     

    Hiline FibreFlex heating 10 bar - UNO

    TypeService PipeNominalOuter CasingMinimumMax Length
      d x s DN D Bending Radius  
      mm  

    mm

    m m
    25/ 91 25.0 x 2.2 20.6 91 0.90 550
    32/ 91 32.0 x 2.5 27.0 91 0.90 550
    40/ 111 40.0 x 2.8 34.4 111 0.90 410
    50/111 47.6 x 3.6 40.4 111 0.90 410
    63/126 58.5 x 4.0 50.5 126 1.00 300
    75/142 69.5 x 4.6 60.3 142 1.10 225
    90/162 84.0 x 6.0 72.0 162 1.20 149
    110/182 101.0 x 6.5 88.0 182 1.30 86
    125/202 116.0 x 6.8 102.4 202 1.40 80
    140/202 127.0 x 7.1 112.8 202 1.40 80
    160/225 144.0 x 7.5 129.0 225 1.60 36

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