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Şile, Istanbul

Şile Backflow Valve Installation

If dirty water rises from the basement floor drain when it rains, will backflow valve installation in Şile solve the problem? In most cases yes, but first you need to know which drain in your building sits below street level.

This small part lets water flow out from the building to the street, and when back pressure comes from the street side, its flap closes the line. At Cantley, we first look inside the line with a drain camera and choose the position of the valve based on that footage. After installation, we run water into the line from the building to check that it flows freely and that the flap closes in the reverse direction.

Backflow risk in Şile's houses with gardens and new residences

Houses with gardens in Şile can have a garden floor or basement that sits below road level. In these buildings the lowest drain is lower than the sewer line, so when the street line fills up, dirty water comes out there first. Even a house that has never flooded before can face this risk in heavy rain.

In a new multi-storey residence in Şile, the building caretaker is usually the first to notice the sign: after rain, dirty water stands in the laundry room drain. Passing this observation on to management is a good starting point for talking about protecting the building's line. In a building like this, the first step is to use a camera to see the point where the line connects to the street.

Frequently asked questions

Is a single backflow valve enough for a building in Şile?

For most buildings, a single valve fitted on the main connection to the street line is enough. Which drain is lowest, and by how much, decides where the valve should go. If a ground-floor toilet or shower is connected to a separate line, that section is also checked on camera and assessed separately.

I have a backflow valve but water still comes back when it rains. What should I do?

First you need to see why the valve is not working: its flap may be jammed with sediment, its seal may be worn, or it may have been fitted in the wrong place. Do not take the flap apart yourself and do not pour chemicals into the line, because chemicals can damage the seal and harden the sediment. We can clean and repair the valve, or refit it in the right place.

Does a backflow valve need maintenance after installation?

Yes. Sediment that builds up in front of the flap stops the valve from closing fully, and this is most noticeable on rainy days. We show you where the valve and its access cover are, and we agree with management when it should be checked.

The first step for your basement when it rains

If water comes back up through your drains when it rains, you can describe the situation by calling 0212 923 66 85. You can also write to us on WhatsApp, and we will plan the camera inspection of the line together with you.

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