FBV an industrial valve designed to mount flush with the bottom of a tank or vessel for complete and residue-free draining of liquids, slurries, or semi-solids Flush bottom valves are specially designed for draining or discharging liquids and slurries from the bottom of tanks, reactors, and vessels without any dead space. They ensure complete drainage, easy cleaning, and prevent product contamination—ideal for chemical, pharmaceutical, and food processing applications.