Back water valve
(Image courtesy Mainline Backflow Products)

what a Backwater Valve do?

A backwater valve is a plumbing device used to protect homes from sewer backflow. It works by keeping wastewater in the sewer system and preventing it from flowing back into the home through a drainage pipe. The backwater valve is placed at the lowest point of the sewer line, where it can act as a barrier against backflow. In addition to providing protection to residential buildings, backwater valves also reduce flooding and water damage caused by sewage backups. They are essential for households that are prone to flooding or located near bodies of water. Installing a backwater valve is an important step for homeowners looking to safeguard their property from potential sewer issues. With proper maintenance and care, these devices can provide effective protection against backflow for many years.

Basically it allows the sewer to go out. But if it tries to flow back into the home the flap floats up and prevents sewer backup.

This image above explains it perfectly.

Check Regularly

It is important to note that backwater valves must be maintained regularly in order for them to continue functioning correctly. This includes checking for any debris or blockages that may interfere with the backwater valve’s ability to close and prevent backflow from occurring. Additionally, backwater valves should also be checked for signs of rust and corrosion. As this could lead to an eventual breakdown of the device over time. If a backwater valve has sustained damage due to wear and tear, then it needs to be replaced with a new one immediately.

Overall, backwater valves are essential devices for protecting homes from potential sewer backup problems. By installing a backwater valve at the lowest point of the sewer line, homeowners can rest assured that their property is safe from backflow issues. With regular maintenance, backwater valves can provide effective protection against backflow for many years to come.

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