Drains (Machine-translation by Google Translate, not legally binding)

摘要

"DRAIN", which is characterized by consisting of the set formed by a tube, whose outer section decreases almost imperceptibly from top to bottom, with a flange at the upper end and threaded in the outer end area of the opposite end, and a second piece of revolution, constituted by a flat ring, with a plurality of protuberances in the lower part, and by a hollow cylinder whose internal wall has at least one threaded part, whose thread corresponds to the external thread of the first part, and which it can carry, in the lower part, a flange finished in edge. (Machine-translation by Google Translate, not legally binding)