Sultangazi Backflow Valve Installation
If dirty water rises from a basement drain when it rains, the first question is usually whether backflow valve installation in Sultangazi is necessary for your building. The answer mostly depends on which of the building's drains sit below street level. When the street line fills up in a downpour, pressure pushes back towards the building, and a backflow valve exists to block exactly that route.
At Cantley, we first come to the address and trace with a camera which drain your line is backing up from and where the building connection joins the main sewer. Once we have shared the cause with you, we decide on the position and type of the valve. During installation only the relevant section is opened up, a backflow valve suited to the flow direction is fitted with a watertight seal, and the area is cleaned up when the job is done.
Why does backflow happen so often in Sultangazi's adjoining buildings?
In Sultangazi, many of the four- or five-storey buildings standing side by side have been enlarged later with an extra floor or a top-floor addition, yet the shared stack and the outlet line have mostly stayed at the diameter they were first built with. This mismatch strains the balance between the street line and the building line. In buildings on the downhill side of a slope, the basement floors sit lower than the main street line, so when a downpour hits or the main line blocks, the water pushes up there first. The same picture repeats in neighbourhoods such as Esentepe and Habipler.
A typical case for site management is dirty water coming back up through the basement car park grate when it rains, and this being put down to roadworks in the street. When grease from the kitchen drain of a café or restaurant tenant meets downpour pressure in the same line, the ground-floor toilet can be the first place water comes out. That is why, on site, we first use the camera to tell which business the load is coming from, and we plan the cleaning and the valve position around that finding.
Frequently asked questions
Does every building in Sultangazi need a backflow valve?
No, not every building does. A backflow valve helps most in basement, ground-floor or garden-floor flats whose drains sit below street level. The line needs to be inspected first, because you cannot tell whether the water in the rain is coming from the street or from a blockage inside the building without seeing it by camera.
What causes water to come up in the rain even though there is a backflow valve?
Most often the valve flap is jammed with sediment, the seal is worn, or the valve was fitted in the wrong spot. In that case the valve is cleaned, repaired if needed, or refitted in the right place. Rather than trying to take the valve apart yourself, it is safer to report the problem to management and make sure the team can reach the maintenance point.
Does a backflow valve need maintenance after it is installed?
Yes. Sediment that builds up in front of the flap can stop the valve closing fully, so it needs to be checked from time to time. After installation we show you the position of the valve and its maintenance point, and we explain to management when checks should be carried out.
Our other services in Sultangazi
Other districts where we offer Backflow Valve Installation
If water comes up from your basement drain, do not wait
If water rises in your Sultangazi building when it rains, let us inspect the line together first. You can write to us on WhatsApp or call 0212 923 66 85.