The internal sewer system provides the collection and discharge of wastewater, the temperature of which does not exceed 95 degrees from the premises, for further transportation into outdoor sewage. Polypropylene or polyvinyl chloride pipes are used to lay internal sewer systems. These polymeric materials are resistant to corrosion and oxidation, resistant to abrasive particles, withstand temperature reduction. In addition, polypropylene pipes for sewage have a low weight in comparison with metal pipes, which greatly facilitates their installation and transportation. The service life of such a sewage system is at least fifty years.
Sewer pipes for the installation of internal systems are available in many versions, have the main diameters – 32 mm, 50 mm and 110 mm, which allows the laying of sewage in any room.