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Multi-stage filtration concepts

Performance-optimized for your individual requirements

Multi-stage filtration systems ensure effective filtration and increased protection of turbines and compressors. Damage due to fouling is kept to a minimum. Unplanned downtimes can be avoided, the general maintenance costs are reduced and optimal turbine efficiency can be achieved.

In a two-stage system, the cassette filter of the final stage is protected by an upstream pocket filter. In three-stage systems, another downstream cassette filter stage is added. This can provide filtration levels up to EPA standard. The selection of filters for each stage depends primarily on the environmental conditions around the plant, as well as on any space limitations.

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Discover our selection of tried and tested multi-stage filter systems for your custom-tailored solution

Ideal for highest purity at EPA level: 3 stages with pocket filters, MaxiPleat- and eMaxx cassette filters
Ideal for restricted spaces: the MaxiPleat modular filter system as a 2-in-1 solution
Ideal for preventing water ingress: hydroMaxx pocket filter firmly plugged on eMaxx cassette filter
Ideal for cleanable systems with safety filter stage: pulse-jet filter cartridges (conical/cylindrical) with MaxiPleat cassette filter

Freudenberg Filtration Technologies e.FFECT

How efficient is your filtration system?

Find the optimal filter solution for your plant with e.FFECT based on ISO 16890

Standardized systems for intake air filtration are frequently inefficient and do not make full use of their potential for optimization. The more specifically filter systems are customized to the respective ambient conditions and plant requirements, the greater performance and reliability they achieve.

Our experts work with you to develop the best filter solution for your plant on the basis of the testing standard ISO 16890. In the filter evaluation, typical urban and rural particle size distributions are considered based on the particulate matter fractions PM1, PM2.5 and PM10, and filter efficiency grades are determined accordingly.

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With e.FFECT, the electronic Freudenberg Filter Efficiency Calculation Tool, calculating the optimal filter solution is extremely simple. The local ambient conditions and specific process requirements enter directly into the calculation. Multi-stage filter systems can then be objectively compared. This simplifies the selection of the best filter concept for your needs.

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Exemplary particle classification to PM fractions for gas turbines and compressors Exemplary particle classification to PM fractions for gas turbines and compressors

Individually developed, precisely planned

Conversions and construction of new intake air systems with Viledon Engineering

Whether conversion or new construction – implement your individually customized system solution anywhere in the world with the comprehensive engineering development and installation services of Freudenberg. Filter systems achieve maximum performance when they are adapted to the specific requirements. We therefore offer you individual service packages for planning and installation: from on-site analysis, consulting, system design and order processing to training and after-sales service – discover the most efficient solution for your future plant with the help of our team of technicians.

The engineering portfolio at a glance

The engineering portfolio at a glance

EUROVENT certifications

Fine filter certification
The independent institute EUROVENT Certification has developed an international certification program for fine filters of groups M and F that is currently being revised on the basis of ISO 16890. All Viledon fine filters are certified by EUROVENT.

Energy efficiency classes
EUROVENT, the European association of manufacturers in the HVAC industry, has developed a classification system for the energy efficiency of air filters. Freudenberg has contributed significantly to the development of this classification. Your advantages: Energy-efficient filters can be identified at a glance.

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EUROVENT Zertifizierung

In our download area, you will find detailed information about our technologies.

Maximizing the efficiency of gas turbines and compressors

Maximizing the efficiency of gas turbines and compressors

Powerful and economic specialist air filtration solutions

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Benefit from our specialized expertise in gas turbines and compressors.

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Efficiency calculation with e.FFECT

Your path to the optimal filtration solution

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Discover our products for gas turbines and compressors.

Click on details for more information. Technical data and specific product features can be found in the e-catalog.

Coalescer prefilters

Optimum protection against water and salt

Coalescer prefilters

Optimal protection against penetrating water and salt – offshore or in coastal regions and locations with high humidity. Special drainage properties prevent the passage of water droplets into subsequent filter stages.

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Compact pocket filters

High-performance, economical and energy-efficient

Compact pocket filters

Robust in sustained use, high operational dependability and reliability even in the face of extreme moisture and wet conditions. They enable the energy-efficient operation of air conditioning systems. This translates to energy cost savings and a reduction in CO2 emissions.

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MaxiPleat cassette filters

High stability, dependability, economic efficiency

MaxiPleat cassette filters

The premium class in patented quality. Highly stable filter designs for the greatest possible operational dependability even under extreme loads. Water-repellent. Long service life, making them very economical.

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eMaxx cassette filters

High-performance, economical and long-lasting

eMaxx cassette filters

The increased overall depth results in especially high dust storage capacity and a long service life. Heavy-duty and dependable. Water-repellent features. Part of the Viledon modular clip-on system.

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MVPGT cassette filters

Viledon quality with optimum performance

MVPGT cassette filters

Top performance with an optimal price-performance ratio. Especially suited for onshore sites with moderate dust concentrations. With the modular clip-on system for 2-in-1 filtration solutions.

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MVPGT-21 and MVPGT-30 cassette filters

Expanded filter area for optimal performance

MVPGT-21 and MVPGT-30 cassette filters

Variants with 21 or 30 m² filter area for high-performance demands. Especially suited for onshore sites with moderate dust concentrations. With the modular clip-on system for 2-in-1 filtration solutions.

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Filter cartridges for turbomachinery

Maximum lifetime, low operating costs for turbomachinery

Filter cartridges for turbomachinery

Pulse-jet filter cartridges GTS, GTS-10 and GTB extend the lifetime of air intake systems with optimal results under all climatic conditions. Static GTG cartridges are best suited for high concentrations of fine dust.

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