Water drainage device

摘要

The device has a central cup into which an opening of water supply emerges. A set of removable plunger tubes (11a-11c) is inserted into the cup by the opening of water supply. An evacuation channel communicates the cup leading to a connection towards an evacuation pipe (4). A clamping plate (10) is provided with a central fastener (20) i.e. screw, for fixing of the clamping plate on the cup. The fastener is designed to cooperate with a complementary fastener or threading located in a central part of the cup.