... reduction in the noise of the installation even when there is water hammering.Abrasion: PP-R pipes allow ... 10% to 20%.Conductivity: The PP-R system is a poor conductor of electricity; therefore perforation phenomena ... by stray currents are unknown. Since PP-R is a poor conductor of heat, condensation and ... (drinking, cold, hot, irrigation, etc.) - it is also possible to use the system for other media, in ...