Discover our solutions for gas turbines and compressors

Benefit from Freudenberg expertise now

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.

Contact us

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

[Translate to English (US):] 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 the optimization potential. 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.

Learn more about ISO 16890


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.

Contact us  Learn more

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.

Learn more

[Translate to English (US):] EUROVENT Zertifizierung

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

[Translate to English (US):] Maximizing the efficiency of gas turbines and compressors

Maximizing the efficiency of gas turbines and compressors

Powerful and economic specialist air filtration solutions

Download brochure

Benefit from our specialized expertise in gas turbines and compressors.

Select and request detailed information.


Efficiency calculation with e.FFECT

Your path to the optimal filtration solution

To download the selected files please leave us some information.

Just complete all required fields marked with (*). You will get a link to download the documents in a glance.

Comfort Download

Remembering you for future downloads. A further address-entry becomes unnecessary after confirming the link you get via email.

How does it work?

You will immediately receive a link via email after requesting the first download. By clicking on this link, your information will be saved as browser cookie solely on your device making a further data-entry unnecessary. You will be able to delete the cookie in the settings of your browser at any time. The feature can be deactivated by deleting the cookie.

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.

Show products in e-catalog

hydroPack coalescer

Extends the useful lifetime of Downstream Filters

hydroPack coalescer

Engineered for applications exposed to continuous water spray or fogging and where filter space must be considered, these filters offer excellent coalescing properties and optimal protection against penetrating salt and water.

Show details in e-catalog

hydroMaxx coalescer

Optimal protection against water and salt

hydroMaxx coalescer

Offering high operational reliability and cost-efficiency they are ideally suited for intake air prefiltration at coastal, offshore, and other high humidity locations. Here they provide optimum protection of the subsequent filter stages keeping them dry thereby extending the operational lifetime.

Show details in e-catalog

Pocket prefilters

Functional reliability even under extreme moist and wet conditions

Pocket prefilters

Prefilters for fine and micro-filters in industrial processes used for supply, exhaust, and recirculating air filtration.  High seperation capacity with low pressure drop, long service life, and excellent cost efficiency.

Show details in e-catalog

eMaxx cassette filters

Powerful. Efficient. Economic. Durable.

eMaxx cassette filters

A new generation of powerful, efficient, economic and resilient cassette filters. With it's deeper filter depth, this series offer high operational reliability and cost optimization, while increasing the efficiency of turbine performance.

Show details in e-catalog

MaxiPleat cassette filters

Patented quality for extreme conditions.

MaxiPleat cassette filters

The technically stable and engineered design of the MaxiPleat series offers continuous reliable operation for even the most extreme conditions.  With a hydrophobic coating, a patented thermal embossing process, and leak-proof casting, these filters provide dependability with cost efficiency.

Show details in e-catalog

MVPGT-21 series

Reliable intake Air Filtration for Gas Turbines.

MVPGT-21 series

Viledon MVPGT-21 cassette filters offer an extended filtration surface for an increased lifetime cycle. They are particularly well suited for intake air filtration of gas turbines and compressors, especially for onshore locations.

Show details in e-catalog

Filter cartridges - Pulsable and static

Maximum lifespan, low operating costs for turbomachinery.

Filter cartridges - Pulsable and static

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

Show details in e-catalog