The Coperion T35/S60 Quick Change feeder is available in volumetric and loss-in-weight configurations. The single-screw feeding elements handle free-flowing powders, granules, pellets and other non-flooding materials, while the twin screw elements control floodable powders and more difficult, sticky or hard-to-flow materials. The feeder is available with a non-product contact device that prevents the bridging or rat-holing of cohesive bulk materials in hoppers; mounted above the feed screws, the device consists of a vibratory drive and intelligent control unit.