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Call Us +44 (0)1773 811112
A reinforced pre-insulated polymer pipe system for district heating applications
FibreFlex is the next generation of highly-efficient, flexible pre-insulated pipe systems for district heating applications. With a reinforced polymer service pipe, the system offers higher working pressures than conventional PE-Xa systems - 10 bar at temperatures up to 95°C - and improved safety factors when operating at lower pressures.
The FibreFlex system’s innovative service pipe has a multi-layered construction, comprising of a PE-Xa pipe at its core, a layer of high-modulus aramid reinforcing mesh and an EVOH oxygen diffusion barrier. This is encased in a bonded layer of closed-cell PUR foam insulation, protected by a tough, yet flexible, corrugated LDPE outer casing. Due to its excellent mechanical strength, the service pipe has a reduced wall thickness, which results in a thicker layer of PUR insulation which can lower heat loss by as much as 17% when compared to conventional pre-insulated PE-Xa systems.
Easy to install with a full range of components and fittings available, the system is supplied in coils of up to 550m in length, which minimises on-site joints and lowers installation costs. The system is offered with options for single or twin service pipe configurations within a single outer casing.
| Application | Buried District Heating Networks |
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|---|---|---|
| Diameter Range | 25 mm to 160 mm (OD) (service pipe) | Bespoke: No |
| Max Operating Pressure | 10 bar | |
| Lengths | Up to 550 m coils | Bespoke: Yes |
| Compliance / Approvals | OFI CERT ZG 200-2 Class A with the technical specification in line with EN 15632-2 | |
| Approved Fittings & Jointing Techniques | Axial compression service pipe joints |
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| Suitability | New installations
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| Jointing Techniques | Axial compression for service pipe joints
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| Jointing Equipment | Axial compression tooling with hydraulic pump (manual or electrically operated), hand tools for service pipe preparation and gas burner for optional heat-shrink casing joint | |
| Installation Techniques | Open-cut |
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| Maximum Temperature (peak): | 95°C |
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| Thermal Conductivity: | ≤0.021 W/mK at 50°C |
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| Service pipe configuration: | Single and Twin |
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| Pipe material: | Multi-layer composition with PE-Xa liner, high-modulus aramid reinforcing mesh, EVOH diffusion barrier, PUR insulation and LDPE outer casing |
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| Pipe colour: | Yellow (service pipe), black with longitudinal yellow stripes (outer casing) |
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