Floor drains are plumbing fixtures that are installed on the floor of a building to remove excess water, wastewater, or other liquids. They are commonly found in basements, garages, commercial kitchens, laundry rooms, and other areas where water or liquids may accumulate.

Floor drains consist of a grate, a strainer, and a trap, which are connected to a drain pipe that carries the liquid away from the building. The grate allows water to flow into the drain while preventing solid objects from entering the plumbing system. The strainer is typically a removable piece that sits inside the grate and can be cleaned or replaced as needed. The trap is a curved section of the drain pipe that holds a small amount of water to create a barrier between the drain and the sewer system, helping to prevent sewer gases from entering the building.

In some cases, floor drains may be connected to a sump pump, which is used to pump excess water out of the building and into a nearby storm sewer or other drains.

Floor drains are typically made of durable materials such as cast iron, stainless steel, or PVC plastic, and are designed to withstand heavy use and exposure to chemicals and other contaminants. Proper maintenance is important to ensure that floor drains continue to function properly and to prevent clogs and backups.