SOUND ARRESTER FOR DRAIN SYSTEM

摘要

PROBLEM TO BE SOLVED: To keep noise generated in a main drain passage having a plurality of vertical pipes connected thereto with a drain collecting pipe from leaking out of a resin made bowl body of a bowl trap. SOLUTION: This is a drain system provided with a bowl trap 2 including a resin made bowl body 12 and drains drain by merging it into a vertical main drain passage 1 through the bowl trap 2. In this present case, a noise insulating means 14 for preventing noise from propagating from the main drain passage 1 towards the bowl trap 2 side is provided between the bowl trap 2 and the main drain passage 1.