- they are installed in wastewater treatment plants for th transportation of screenings (SD). They are frequently used also in other industries.
- depending on the conveyor length and the nature of the substance being transported, they are manufactured with shaft (SD) or in a shaftless variant (SD-B) and their screws are either pushed or pulled.
- outdoor variant is equipped with double heated housing.
- conveyor operation is controlled by the control panel, usually together with screens, presses, separators, belt presses and sludge presses.
- different types of material can be transported with appropriate choice of design solutions; in the case of shaft-less also different types of liners.