Bachman Industries Inc. engineers and manufactures 4-port dual diverter dampers, iso-flex guillotine dampers, iso-spade guillotine dampers, louver and double louver dampers, butterfly dampers, retracto-seat guillotine dampers, single louver dampers, five blade-type isolation dampers, and zero-leakage toggle disk dampers. The isolation dampers are used in steel mill applications, while the toggle disk dampers are found in wood chip gasification plants.