Esenler Backflow Valve Installation

If foul-smelling water rises from the floor drain of a basement student flat after rain, you should assume the street line is filling back towards the building. Cantley first inspects the line with a CCTV drain camera and explains where the problem comes from, then decides the valve position together with you. In places used by many people, such as dormitories, this explanation also reduces the uncertainty about who needs to do what.

In Esenler, five and six-storey buildings stand side by side, with shops on the ground floors and flats and small workshops in the basements. Many buildings were put up in the same period using similar methods, so their drainage systems work within similar limits.

When new buildings and old ones are connected to the same street line, the sewer network tries to carry today's load with the capacity it was first built for. When the line fills, pressure pushes into the building through its connection and overflows from the lowest drain. This valve stops the reverse flow. If sediment builds up in front of the flap it cannot close fully, so it should be fitted somewhere accessible and checked from time to time. Seeing the shared line before arguing over which flat is causing the problem helps avoid needless blame between neighbours.