Filter solutions for general and custom ventilation

BWF Envirotec is the world’s leading supplier of complete industrial flue gas filtration solutions. BWF Envirotec’s growing international presence is based on 15 production and distribution locations as well as a worldwide partner network. The headquarters of BWF Envirotec is located in Offingen, Bavaria. 1995 The company started its activity as F.O.S. Filtertechnik Polska Sp. z o. o. 1999 Setting up the trade office in Warendorf, Germany 2005 F.O.S. Filtertechnik Polska Sp. z o. o. changes its name into ORWAT Filtertechnik Sp. z o. o. 2009 Construction of a new production hall for the Filtration...

The ISO 16890 Standard introduced in 2017 requires filter manufacturers to test filters and report on their filtration efficiency. These changes mark a new stage of development in the standard filter testing and classification process. MINIMUM REQUIREMENT It provides reliable data on the actual filter efficiency, filtration efficiency, and thus enables the optimal selection of the filter depending on the environmental requirements. This standard measures the efficiency of the air filter in the particle size range from 0.3 pm to 10 pm. It classifies filters into 4 groups as ISO Coarse; ISO ePM10;...

The EN 1822 Standard defines the testing and classification of absolute filters. This standard divides absolute filters into 3 different groups as E, H and U. E - EPA filters efficient air filters H - HEPA filters high efficiency air filters U - ULPA filters ultra-low penetration air filters EN 1822 Standard, provides a detailed classification system based on their filtration efficiency and ability to capture particles of various sizes. It outlines testing methods such as the leak test, the efficiency test, and the scanning test to ensure the filters meet their specified performance criteria....

Pocket Filters The most frequently used filtering element in ventilation systems Filter pockets are produced in a metal or synthetic frame. The number of pockets depends on the technical aspects of ventilation systems. The raw materials used in the production process, filter medium and production technology guarantee proper filtration properties and feature a long service life (as desired by customers). STANDARDS Pocket filters are manufactured to standards: ¢ ¢ The arrangement of polyester or polypropylene fibres with a progressive structure guarantees a minimum ratio between filter efficiency...

STANDARD DIMENSIONSFrame sizes in pocket filters are fully standardized. The most popular are: o 592 x 592 mm o 490 x 592 mm o 287 x 592 mm o 287 x 287 mm BWF Envirotec produces non-standard dimensions upon request or according to a sent format. o G2, G3, G4 - in ventilation and air-conditioning installations of rooms with average air purity requirements, e.g. hotels, office buildings, shopping centres, etc. o M5, M6, F7, F8, F9 - in ventilation and air-conditioning installations of rooms with high air purity requirements, e.g. hospitals, food and electronics industries, etc. FILTRATION EFFECTIVENESS...

Cassette Filters Commonly used filters for pre-treatment Cassette filters are most frequently used as the first filtration level in air conditioning and ventilation units. Our technical potential enables us to produce filters using a minipleat filter medium (to increase filter surface) or lying flat. Depending on the dimensions of the filter, additional bars are installed. The unit is branded with a dimension label to help to identify the product properly. STANDARDS Cassette filters are manufactured to standards: ¢ ¢ MATERIALS Arrangement of polyester or polypropylene fibres with a progressive...

Frame made from galvanized sheet metal, plastic or cardboard:o 592 x 592 mm o 287 x 592 mm o 625 x 500 mmFrame thickness:o 20 mm, 25 mm, o 50 mm, 96 mm, 100 mmAPPLICATIONS o G2, G3, G4, M5 - used in air-conditioning and ventilation units in rooms with average requirements of air purity e.g.: hotels, office buildings, shopping centres etc. BWF Envirotec manufactures non-standard dimensions upon request or according to drawings and specifications of our customers CLASSIFICATION ACCORDING TO THE STANDARDS OF PN EN 779 : 2012 FILTRATION EFFECTIVENESS % Initial pressure drop Pa Recommended final pressure...

Cassette Filters Cassette filters with thermosetting pleat – without steel mesh In response to the market needs, we introduce a new technical solution for cassette filters to our catalogue – the innovation based on the elimination of the steel mesh from the filter structure. TECHNICAL DATA Cassette filters are the most frequently used filters of the first stage filtration in air conditioning and ventilation units. The new technical solution enables non-woven filter fabric to be pleated with the use of thermal treatment, which results in a stiff pleat placed in the filter frame. This design enables...

Plastic frame Optional 3V - 3 humps or 2V - 2 humps The filter medium is made from fibreglass, waterproof paper characterised by high efficiency, formed of micro-fibreglass warp and a mixture of synthetic fibres. Filters available in our offer fall within classes M6 - H13, therefore they can be used in clean rooms in which air purity requirements are high. Filters are available in versions to operate in high temperatures (HT) or carbon fibre. Frame is injection moulded, made from polystyrene. Used as final stage filters in air-conditioning and ventilation systems or as pre-filters before absolute...

STANDARDS APPLICATION Filter classification: Used in air-conditioning and ventilation units in rooms with average requirements for air purity e.g.: hotels, office buildings, shopping centres etc. Fire rating: DIMENSIONS Available in rolls or to exact specifications. Arrangement of polyester or polypropylene fibres with a progressive structure, thermally or mechanically hardened, or by binding measures. TECHNICAL DATA FILTER MAT FILTRATION CLASS G2 G3 G3 G4 G4 G4 M5 M5 M5 Carbon mat Material 100 % PET Activated carbon- coated polyester operating temperature White White White- White- White White...