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Learn how to place a ventilation pipe in the sewage system already ready in the piping I used a 100mm sliding sleeve a 100mm sleeve two 100mm tees a reduction from 100 to 50mm a 50mm elbow a 50mm sleeve the connection was made to an old pipe and a ventilation pipe was placed in this location it will be another bathroom http://einhell.com.br/site/produtos/t...