General Pipe Cleaners 3F 3 Float Model Flood Guard Small BLACK

Product Description Operates like a check valve to seal off water back up caused by overload sewers. Water flows normally through drain until sewer begins to back up. Then Flood Guard rises to seal off drain opening until water recedes. No. 2FH: Fits 2" pipe No. 3FH: Fits 3" From the Manufacturer Flood-Guard operates like a check valve to seal off water back-up caused by overloaded sewers. Water flows normally through the drain until the sewer begins to back up. Then the Flood-Guard float rises to seal off the drain opening until the water recedes.