Pleated bag filters

Save money and improve your processes with our high-quality pleated bag filters. Our range of pleated bag filters for standard dust collection systems and our custom filter solutions enhance the performance of your dust collection and bag filter systems.

Pleated bag filters offer maximum performance and economy. The compact, shortened design reduces abrasion caused by coarse particles and thus contributes to significantly lower emissions.

Thanks to efficient surface filtration, the filtration efficiency remains consistently high over the entire service life, which enables extended service life and stable process reliability. At the same time, the optimized cleaning properties lead to a reduced working pressure and lower pulse frequency. In addition, the lower pressure drop of the pleated bag filters reduces energy requirements.

The filters also offer significant benefits when it comes to servicing: The one-piece design makes maintenance work easier and speeds up filter changes. The result is reduced downtimes, an extended service life for the Filter Elements and reliable compliance with even the strictest emission limits.

Your Benefits

Longer service life and lower energy consumption thanks to pleated filter media
Reduced emissions through surface filtration and minimized abrasion
Less maintenance required due to longer service life and efficient filter replacement

Product Line Overview

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Bottom Loader Pleated Bag Filters

Multifit Pleated Bag Filters

Steel Top Loader Pleated Bag Filters

Top Loader Pleated Bag Filters

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Applications of Pleated Bag Filters

Pleated bag filters are used in various industries, including industrial manufacturing, food production, cement manufacturing, metallurgy, chemical processing, mining, mineral processing, waste management, and power plants. Our pleated bag filters are designed to be specifically tailored to the unique challenges of each application, ensuring optimal performance and regulatory compliance.

Food & Beverage Industry

In the production of powdered food products—from cocoa and coffee to flour, sugar, and spices—Hengst helps you maintain hygienic conditions, reduce risks, and meet global safety standards. Our certified Filter Elements ensure clean air, reliable filtration, and efficient processing of a wide variety of powdered ingredients.

Product Features

Longer service life and lower energy consumption thanks to pleated filter media

Pleated filter media allow a significantly larger amount of filter material to be installed in a single element. The resulting increase in filter area extends the filter’s service life. At the same time, the larger surface area reduces flow resistance, which also leads to a lower pressure drop and a slower rise in differential pressure, thereby reducing the energy consumption of the entire system. This energy savings requires a VFD (Variable Frequency Drive) that controls the fan speed according to demand. Additionally, pleated bag filters utilize efficient surface filtration. The improved cleanability increases dust discharge and prevents rapid media loading, resulting in a consistently stable, lower differential pressure and further extending service life.

Surface filtration instead of depth filtration

Surface filtration uses synthetic, pleated spunbond media. These media have a particularly dense, uniform surface on which particles primarily accumulate rather than penetrating deep into the material. In contrast, conventional depth filters trap particles inside the filter material, which makes cleaning more difficult and increases the differential pressure.

The closed surface of pleated media enables highly efficient cleaning: dust deposits can be easily dislodged by pulsation, keeping the differential pressure consistently low and reducing energy consumption. At the same time, the air permeability of the filter medium is permanently maintained, allowing for higher specific air flow rates (air-to-cloth ratio). This makes surface filtration in pleated bag filters a high-performance and cost-effective alternative to conventional depth filters—especially in applications that require high filtration efficiency and long service life.

Compliance with emissions standards through minimized abrasion and higher filtration efficiency

The use of pleated filter media significantly reduces the filter length, as a larger filter area can be accommodated within a smaller installation space. The shorter filter increases the distance between the filter bottom and the hopper in the collection area. A greater distance improves the separation conditions for heavy dust particles: They are separated from the airflow earlier and do not reach the filter surface. Instead, the particles accumulate at the bottom of the housing. This reduction in CAN velocity allows a greater quantity of particles to be collected at the bottom of the bag filter.Since coarse particles no longer strike the filter directly, the mechanical stress on the filter media is noticeably reduced. Thanks to the lower abrasion, filtration performance is reliably maintained. As a result, stringent emission limits can be met more reliably.In addition to reduced abrasion, the significantly higher filtration efficiency of pleated media also contributes substantially to minimizing emissions. Thanks to the larger filter area and highly effective surface filtration, even the finest particles are reliably filtered at the media surface. The improved cleanability also prevents rapid deep-layer fouling, keeping the differential pressure stable and low and ensuring that filtration efficiency remains consistently high throughout the entire service life. This results in consistently efficient particle retention and enables reliable compliance with even the most stringent emission limits.

Reducing Total Cost of Ownership: More Efficient Operation with Pleated Bag Filters

Pleated bag filters make a significant contribution to reducing the total cost of ownership, as they simultaneously minimize energy consumption, maintenance requirements, and emissions. The combination of energy savings, reduced mechanical stress, high filtration efficiency, longer service life, and greatly simplified maintenance makes pleated bag filters an economically compelling solution for operators seeking to permanently lower their total cost of ownership.

Maximizing airflow: Ensuring optimal airflow within the filter system to increase the overall efficiency of the dust collection system.
Reducing energy and maintenance costs: Reducing energy consumption as well as the frequency and costs of maintenance work.
Extending filter service life: Extending the service life of the filters to avoid frequent replacement intervals and the associated costs.
Reducing emissions: Improving emission control to comply with environmental regulations and support corporate sustainability goals.