Vertical Conveyors are fully integrated, multiple position conveyors used to raise or lower products between conveyor elevations or, when used in tandem, they can form a conveyor "bridge" above heavily congested plant areas. Generally, the Vertical Conveyor uses a section of Slip-Torque or Slip-Trak bed to transfer products in and out of the vertical conveyor shaft. Once the product is inside the shaft, the vertical conveyor mechanism activates and raises or lowers the entire conveyor bed to the appropriate elevation. Product in feed and discharge can take place in a "Z" or "C" configuration or the entire bed can be rotated to discharge product to a conveyor at a right angle to the product in feed conveyor. It is mainly used for low-frequency intermittent vertical transfers (cf. vertical chain conveyor can be used for continuous high-frequency vertical transfers.