Förfarande och anordning som förhindrar luftströmmar och avloppsvatten från avloppssystem att tränga in i fastigheter

摘要

The system has cast iron drains which are fitted with a ring mounting (12). On top of the ring mounting a specially shaped adaptor ring (11) is placed. A water trap (10) prevents the flow of air or liquid effluent from the sewage system into the house, even when the water has evaporated from the trap.