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.
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.
