Beşiktaş Backflow Valve Installation

At Cantley, we first look at which drains in the building sit below street level and where the line connects to the main network. Once we have run a camera through the line and found the risk point, we decide the position and type of the valve. We fit it to suit the direction of flow, and when the work is finished we run water into the line from the building to check that it flows freely.

On the steep streets running down to the shore in Ortaköy and Bebek, waterfront mansions (yalı) stand beside stone and timber buildings. Plastic parts added later to old lines, and sharp bends, create weak points for blockages and backflow. For buildings on a slope, the load coming from the structures above bears down on the connections in the street below.

Someone living on the entrance floor of an apartment building at the lower end of a slope may notice the water in the ground-floor toilet rising by itself after rain. The caretaker of the same building may see dirty water standing in the basement floor drain once the downpour eases, and let the manager know. In apartment buildings in Etiler and Levent, car park grates carry a similar risk, and so do the drains of ground-floor businesses in the narrow streets around the market.