Drainage device for assembling to a floor plate with an opening for drainage water and assembly of such a drainage device to a floor plate

摘要

Drainage installation has pipe pieces (29,30) movable relative to each other, so that through the relative motion an opening (16) in the ground plate and an upper inflow opening (36) of the installation can at least in part be covered. The pipe parts have flanges stretching radially to the exterior which are sealed off against one another through using seals (34,35).