Hiline Flex is a flexible, pre-insulated pipe system that is designed for use in buried heat networks. A cross-linked polyethylene (PE-Xa) service pipe is encased inside a bonded layer of polyurethane foam insulation, which in turn is protected by a distinctive corrugated green outer casing of LDPE.
Supplied in dimensions ranging from 25mm up to 160mm OD – with both single and, in certain dimensions, twin PE-Xa service pipe configurations – the pipes are delivered to site in continuous lengths on rolls (with the exception of the 160mm OD pipe), to minimise on-site jointing and speed-up installation times.
Suitable for continuous operating temperatures of up to 80°C, the Hiline Flex system is available with a whole range of joints, fittings and accessories.
Mark Whettall, CPV’s managing director, said: “We have invested heavily in our UK production and warehousing facilities and the launch of this new, flexible district heating pipe system underpins our commitment to the development of the heat networks that are being built in response to the fight against climate change.
“Although pre-insulated steel pipe systems still have an important role to play – particularly in the larger-scale distribution networks and arterial supplies, we’re seeing many more hybrid systems being developed that use a combination of both steel and flexible PE-Xa systems for the smaller distribution networks.”