The 4T are an economical solution to suppress the emission of dust from industrial plants, and the investment is often paid back in terms of product recovery. The 4T are designed to meet the heavy demands from industry for substantial construction and reliability.

The circular filter chamber contains a number of cylindrical filter bags mounted on strong support cages. The dust-laden air is led into the filter chamber, and the fine dust deposits on the outside of the filter bags. The air penetrates the filter bags, and the clean air is discharged through the outlet in the top section. The separated dust settles in the bottom of the filter from where it can be discharged in different ways, depending on the amount of dust and type of plant.

Series 4T, has been developed to operate with dust explosion vents. The design of the filter housing and inlet zone secures a smooth flow of coarse particles as well as fine aerial dust particles into the filter. The concept of combining the ideal filter unit with one of the five construction forms means that using standard modules can solve almost any task.