Atmospheric air contains contaminants such as: dust, various forms of hydrocarbons and water in the form of moisture.
All components of the contaminants are drawn into the compressor and are also present in the compressed air, including even the oil particles that get into the air thanks to the lubrication of the compressor. All the parts interact with one another and create an abrasive and corrosive emulsion, which can cause damage in the piping, to pneumatic systems and to the products themselves. Professional filters from the MARK brand, intended directly for screw compressors, remove all these contaminants. In addition, you can conveniently monitor the state of clogging of the filter element in these professional filters and thus order a replacement filter element in good time.
MARK brand filters are the answer to more advanced requirements for the quality of air from compressors and ensure high efficiency and reliability even for sophisticated compressed air equipment.
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Coalescing filter FMO series Filtration 0,1 um - residual oil 0,1 mg/m³ green identification colour Specific use as a pre-filter for refrigeration dryers, further as an oil-removing filter, a preventive filter protecting the piping, etc. |
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High-efficiency coalescing filter of the FMM series filtration 0,01 um - residual oil 0,01 mg/m³ red identification colour Specific use as a filter after the dryer, a pre-filter before FCA and ADS, for pneumatic systems, paint shops, pneumatic conveying, laser cutting and the like. |
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Pre-filter FPRO series filtration 3 um yellow identification colour Ideal protection of the piping and a pre-filter in cases of considerable contamination of the air by liquids or dust |
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Activated carbon filter FCA series residual oil 0,005 mg/m³ silver identification colour The activated carbon filter serves to remove vapour, oil and residual hydrocarbons. Use in pharmacy, the food industry and the chemical industry, photographic laboratories, packaging technology, galvanic plants, high-quality painting, etc.... |
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Dust filter FPRE series filtration 1 um green identification colour Use in systems with a high dust content, for example the outlet on ADS adsorption dryers. It is declared as an additional filter after the FPRO stage and as a pre-filter of the FMM series. |
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| The presence of contaminants leads in particular to: | - Leaks in the piping - Higher costs for machine maintenance - A reduction in product quality and company image |
The growing share of automation and the application of more sophisticated products place ever greater demands on the quality of compressed air.
Filters from the MARK company can be the solution to preventing all the damage potentially caused by contaminants contained in compressed air.
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Definition and use |
| Dry air - industrial systems - measuring systems - high-quality painting |
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| Oil-free air - pharmacy, the food industry, the chemical industry, packaging technology - galvanic applications - photographic laboratories |
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| Oil-free air - pneumatic conveying - industrial painting - control systems - laser cutting |
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| Service air - air tools - blasting - construction |
| Air purity classes | |||||
| ISO 8573-1 | Dust | Water | Oil | ||
| class according to | Size | Concentration | Dew point | Water content | Concentration |
| 1 | 0,1 um | 0,1 mg/m³ | -70°C | 0,003 g/m³ | 0,01 mg/m³ |
| 2 | 1 um | 1 mg/m³ | -40°C | 0,11 g/m³ | 0,1 mg/m³ |
| 3 | 5 um | 5 mg/m³ | -20°C | 0,88 g/m³ | 1,0 mg/m³ |
| 4 | 15 um | 8 mg/m³ | +3°C | 6,0 g/m³ | 5 mg/m³ |
| 5 | 40 | 10 mg/m³ | +7°C | 7,8 g/m³ | 25 mg/m³ |
| 6 | - | - | +10°C | 9,4 g/m³ | - |
| Filtration capability | |||||||
| Series | Filtration (1) | Efficiency | Residual oil (1) | Pressure drop | Class according to ISO 8573 (2) | ||
| um | % | mg/m³ | mbar | psi | Dust | Oil | |
| FMO | 0,1 | 99,9 | 0,1 | 80 | 1,16 | 1 | 2 |
| FMM | 0,01 | 99,9999 | 0,01 | 90 | 1,30 | -1 | 1 |
| FCA | - | - | 0,005 | 120 | 1,74 | - | -1 |
| FPRO | 3 | 99,9 | - | 40 | 0,58 | 3 | - |
| FPRE | 1 | 99,9 | - | 80 | 1,16 | 2 | - |
| Technical data | ||||||||||||
| Type | Air flow | Pressure | Connection | Size | Weight | |||||||
| l/min | m³/h | cfm | bar | psi | thread | A | B | C | D | kg | ||
| 10 | 1 000 | 60 | 35 | 16 | 232 | 3/8" | 187 | 88 | 20 | 60 | 0,7 | |
| 13 | 1 300 | 78 | 46 | 16 | 232 | 1/2" | 187 | 88 | 20 | 60 | 0,7 | |
| 20 | 2 000 | 120 | 71 | 16 | 232 | 3/4" | 257 | 88 | 20 | 80 | 0,8 | |
| 33 | 3 300 | 198 | 117 | 16 | 232 | 1" | 263 | 125 | 32 | 100 | 1,8 | |
| 60 | 5 580 | 335 | 197 | 16 | 232 | 1" | 363 | 125 | 32 | 120 | 2,5 | |
| 85 | 8 500 | 510 | 300 | 16 | 232 | 1 1/2" | 461 | 125 | 32 | 140 | 2,5 | |
| 130 | 13 000 | 780 | 459 | 16 | 232 | 1 1/2" | 640 | 125 | 32 | 160 | 3,2 | |
| 170 | 16 600 | 996 | 586 | 16 | 232 | 2" | 684 | 163 | 42 | 520 | 5,1 | |
| 250 | 25 000 | 1 500 | 883 | 16 | 232 | 2" | 935 | 163 | 42 | 770 | 7,1 | |
| 400 | 40 000 | 2 400 | 1 413 | 16 | 174 | 3" | 1 000 | 240 | 58 | 780 | 14 | |
1 ) Reference conditions: pressure 7 bar (102psi), temperature +20°C
2 ) The ISO classes related to water content do not apply to filters
Max. working temperature: +66°C for the FMO-FMM-FPRO-FPRE series, +35°C for the FCA series
Min. working temperature: +1°C
| Flow correction factors at a pressure other than the reference pressure | ||||||||||||||||
| Working pressure (bar) | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | |
| Working pressure (psi) | 29 | 44 | 58 | 73 | 87 | 102 | 116 | 131 | 145 | 160 | 174 | 189 | 203 | 218 | 232 | |
| Correction factor | 0,38 | 0,52 | 0,63 | 0,75 | 0,88 | 1,00 | 1,13 | 1,26 | 1,38 | 1,52 | 1,65 | 1,76 | 1,87 | 2,0 | 2,14 | |
The new flow value is calculated by multiplying the correction factor for the real pressure value by the flow at the reference pressure of the filters.
| Standard parts |  |
| Fixed body For connection to the piping, with high flow and low performance losses. |
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| Movable part of the body for replacing the element, simply removable, with a pressure-relief device for greater safety and for draining condensate. |
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| Filter element with double stainless steel support, with a pressure connection and for easy replacement. |
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| Automatic draining with a float for draining the separated liquids. |
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| Manual draining for the FCA, FPRE series. |
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| Anti-corrosion surface painted surface of the body for its long service life. |
| Accessories | |
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Aluminium pressure gauge for mounting on the filter body for direct reading of the state of the filter element |
| Pressure indicator for mounting on the filter body, 360° visibility, provides a visual signal that the filter element needs to be replaced. |
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Wall mounting kit for easy fastening of the filters to the wall Small: for F10 to F20 Medium: for F33 to F130 |
| Connection kit Small: for F10 to F20 Medium: for F33 to F130 for the modular installation of a filter battery |
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