What is a backwater flow valve?

11/12/2019 Off By admin

What is a backwater flow valve?

A backwater valve allows water from your toilets, sinks, and bathtubs to flow out of your home and into the main sewer system. If water begins to flow backwards, from the city’s pipes and into yours, the flap on the backwater valve will close and stop the water from entering your home.

What is a backwater valve used for?

A mainline backwater valve can help prevent sewage in an overloaded main sewer line from backing up into your basement. Placed directly into the sewer lateral in your basement , the valve automatically closes if sewage backs up from the main sewer.

How much does it cost to install a backwater valve?

Installing during the initial construction is naturally much cheaper, and can be installed for between $150 to $250. When retrofitting, some concrete will need to be removed to access the main sewer line. The cost to retrofit a backwater valve can range from $1,000 to $2,000.

Are backwater valves a good idea?

To keep things flowing smoothly, a backwater valve is your best bet. During a super heavy rainfall, or if your home is located in a floodplain, a backwater valve is the main thing that will keep sewage in the sewer system where it belongs and prevent pools of, well, poo water, in your home.

Can a backwater valve be used as a cleanout?

It cannot be used as a clean-out and doing so can damage the assembly. Backwater valves are required if the flood level rim of the lowest fixture of a building is below the elevation of the cover of the next upstream manhole.

Where should a backwater valve be installed?

Plumbing codes require backwater valves when a fixture is installed on a floor that is below the next upstream manhole. The obvious example is the basement floor drain. Less obvious is a first floor fixture in a lot at the bottom of a hill.

Do older homes have backwater valves?

Newly constructed homes require backwater valve installation, but older homes that predate the change to plumbing code (since 1988) may not have one.

Are backwater valves worth it?

While installing the backwater valve may seem inconvenient or expensive, it will ultimately save you thousands in repairs and cleanup. Sewer backups can damage floors, walls, carpet, furniture, and any property in your basement.

Does a backwater valve need to be accessible?

Although they are self operating, they are in fact “valves” and cannot be buried in the structure. These valves come with covers that often look like cleanouts and can be extended deeper if necessary. They need access for maintenance, but should not need to be opened during each and every backflow event.