Flexalen 600

Polybutene-1, ideal for district heating, cooling and potable water networks

Flexalen 600 pre-insulated pipes consist of a flexible polybutene (PB-1) medium pipe, ensuring durable performance in large-scale district heating and cooling networks as well as domestic applications:

• High flexibility
• Minimal creep
• High tensile strength
• Minimal heat loss
• Minimal expansion forces
• Long lifetime (up to 100 years depending on use)
• Size range from 20 to 125mm in SDR class 11
• Available with oxygen barrier
• Smooth internal walls (7 x 10^-6 m over lifetime)
• Less pressure loss, no biofilm or incrustation
• Allows electrofusion, poly-fusion and butt-fusion welding
• Cradle to Cradle Certified™ Silver
• 100% recyclable

Thermaflex insulation foam – high and durable energy performance

Direct extruded polyethylene insulation encloses the pipe, keeping the water absorption coefficient to a minimum thanks to its integrated water vapor barrier and closed cell structure. It is available in 3 thicknesses: compact, standard and large-scale DHC.

HDPE jacket for superior protection

A protective corrugated HDPE outer casing with UV stabilizers ensures high mechanical strength and flexibility throughout the networks’ entire lifetime.

Complex networks mastered by design

Thanks to the unique features of the Flexalen 600 pre-insulated pipe system, many aspects of the network can be optimized to reduce the initial investment and operating costs:

• Easy welding allows narrow trenches
• Flexibility eliminates the need for work-arounds, reducing quantity of materials and fittings
• Low pressure drop allows smaller pipe diameters, faster flow with less pump capacity
• No network segmentation needed, limiting the number of on-site connections

Our team of network engineers is at your disposal for any technical questions or assistance in dimensioning or route optimization.

Find all the technical details in our product guide in the download section.