Back water valves are check valves used in a plumbing drain to help prevent water backup or flooding in a particular area of your home during a stoppage.
A basement floor drain is a drain which can allow water and waste to back up in the basement if a back water valve is not installed. The homeowner may not become aware of a house drain or sewer clog, as the waste from upper bathrooms can flow down the waste pipes and backup into the basement floor drain. A flood alarm located in the areas of the floor drain is also a good idea.
This same situation can happen where furnaces, humidifiers, and water softeners discharge into your crawlspace, out of sight, out of mind.
Any open drain in your crawlspace lower than your shower or tub drain will overflow into your crawl space, during a stoppage it can turn your crawlspace into a cesspool of waste.
If you are interested in preventing damage caused by water backup in your crawlspace or mechanical room floor drain, give Accro Plumbing a call 417-839-1417.