The construction of networks for conveying and evacuation waste water constitutes one of the fundamental services for ensuring the functionality of our cities, for safeguarding the public and for preserving the quality of the environment we live in. Designing the maximum safety, realizing and laying systems for conveying waste waters therefore presuppose a high level of reliability in the materials used which must guarantee the total tightness of the drainage network. The intrinsic characteristics of PVC combined with the new integrated junction system protect the ground and water table from pollution thanks to the perfect hydraulic tightness of the joint which prevents dangerous leakage of waste waters. It is of course necessary to realize sewage systems using materials which ensure fast and economical laying, efficient tightness over time, and limited deterioration with ageing, in order to guarantee an adequate life for the system and a reduced incidence of running costs and maintenance activities. Starting from the experience acquired in the production of piping in PVC for carrying fluids under pressure in which a connection system with integrated ring has already been used, Faraplan Spa decided to extend its production technology which envisages prefitting the gasket with heat during the socket-forming stage, to the range of pipes for sewers manufactured to UNI EN 1401 standards for the SN 8 KN/m2 annular rigidity class only.
