Sewer backflow prevention valves (or check valves) can reduce the risk of a sewer back up into your basement. They are a mechanical device that allow the waste water to flow away from your home only. As a result, they can decrease your chances of sewage from the street backing up into your home when installed & maintained appropriately.
Today, this device is more apt to be found in a newly constructed home, however many homeowners are choosing to have it retrofitted into their home. This typically requires that the concrete slab floor in your basement is cut into to provide access to the drain pipes for its installation. A properly installed sewer backwater valve is intended to prevent flooding when waste water in the sewer lines backup into the house through the drainpipes. If this occurs, it can cause damage that is costly to repair and poses serious health concerns too not to mention the terrible inconvenience during remediation.
Periodic inspection and maintenance of these devices by a licensed plumber is recommended.
You should also consult your homeowner’s insurance broker to ensure you have adequate coverage in the event of a sewer back up. Inquire as to whether or not the installation of a sewer backflow prevention valve can save you money on your insurance premiums.