The process is the

The mandatory paragraph of the process is the preparation of the installation scheme of the future system. It is especially relevant for the old -building residential sector, in which the "Sovdepovskaya" wiring has already been installed. As practice shows, years of operation, even “eternal” cast iron into unusable. Therefore, when planning repairs, as a rule, rusty rotten elements of the system are changed to wear -resistant, durable, resistant to aggressive environments, temperature extremes, high pressure (about 10 atm.) metal -plastic. The smooth inner surface of the networks from such material does not delay mucus, dirt, solid waste, helps to prevent blockages. So that the drain waters are not “rammed”, moving along the sewer branches, their sound insulation should be provided.