Multi-layered flexible piping for HVAC connections. It consists of a longitudinally butt-welded aluminium pipe (serving as oxygen barrier), encased between 2 layers of polypropylene plastic (internal layer for low friction, external layer for corrosion resistance). Can withstand a maximum operating temperature of 95˚C and operating pressure of up to 12 bar. 

End connections are made by press fittings. 

Supplied in reels of up to 200 m length, either bare or pre-insulated.