Live bottom feeders are designed to convey and meter large quantities of materials in a very efficient manner. Live Bottom Screw Feeders have a flood loaded inlet of two or more screws aligned side by side and are specifically designed to meter the product at a fixed or variable rate A flood loaded condition is usually identified by the bulk materials being stored initially in a hopper, silo or bin and then transported from these containers by the screw feeder. Normally the feeder screw will have a variable pitch under the inlet and then the balance of the flights will be full pitch.