Air lock is a significant component of pneumatic conveyance systems. It is also called star feeder, cell wheel, rotary wheel feeder, rotary valve or eclipse according to the type and application areas. Air locks control the flow of various granular, grain or powdered material from silos, hoppers, cyclones, filters, mixers, etc. Airlocks are used to prevent the flow of air between areas where materials under pressure, vacuum, or gravity are taken or discharged. Air locks ensure regular and steady product flow.