Pre-insulated PP-R pipes

Aqua Plus PRINS pre-insulated PPR pipe is described for indoor, outdoor and underground installations. The source states that it won first place for innovative Greek manufacturing in the 2018–2019 Made in Greece competition.

Its compact polyurethane insulation has a stated density above 60 kg/m³ to EN 253. The lead-free UV-stabilised uPVC outer pipe is described as self-extinguishing and class B1. Listed linear expansion is α = 0.016 mm/m/°C, with a stated 40% reduction compared with fibreglass-reinforced PP-R. The source reports insulation conductivity λ = 0.021 W/mK and 41–58% lower losses against a λ = 0.04 W/mK comparison. It describes the system as waterproof and resistant to insects, rodents and weather.