A new, lightweight batch sifter variant of Kason Corp.'s Flo-Thru VIBROSCREEN(R) separator line scalps oversize particles from small batches of bulk material being loaded into drums, blenders, other process equipment and storage vessels. Units are offered in diameters of 18, 24 and 30 in. (450, 600 and 750 mm), with a single imbalanced-weight gyratory motor, minimizing weight for easy repositioning while providing ample capacity for typical batch requirements. Caster-mounted stands for in-plant mobility are optional on all models. Flo-Thru separators are characterized by externally mounted, single or twin gyratory motors that allow low profile configurations needed for limited headroom areas, or in the case of manual dumping, reduced lifting effort.