General Wire 3F Flood-Guard 3" Float Model (Order In Multiples of 6)

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 ManufacturerFlood-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.