Integrating shuttle system that lets used hopper be exchanged for clean, dry hopper in <1 min, BULK-OUT® Bulk Bag Discharging Station prevents cross-contamination during material changeovers and eliminates down-time associated with hopper cleaning. Each hopper is equipped with stainless steel rotary valve that meters material into process equipment positioned below mezzanine. Once empty, hopper can be rolled within 2 C-channels to either side of central filling position for sanitizing offline.