Air filter cartridge FAMA V4

for pre-filtrationmetalfor pre-filtration

Overview
The FAMA V4 coalescing pre-filter is a cylindrical pre-filter with a truncated-cone section, designed for insertion along the suction piping of oil-mist extraction systems. It condenses and continuously recovers up to ~95% of the oil contained in oily vapors and returns it to the machine tool, reducing downstream pollutant load.

Main benefits

• Continuous recovery of processing oil directly into the machine tool, including during suction operation
• Reduced maintenance frequency for downstream filter groups due to lower pollutant passage
• Increased extractable air from the machine tool with minimal oil carryover (approx. 4–6 L/hour)
• Lower energy consumption through reduced clogging of the filtering group
• Cost savings on processing oil and spare parts
• Reduced CO2 footprint due to lower oil, transport and packaging needs

Product details
The V4 combines a flow diverter and a high-density metal mesh filter septum with a low pressure drop (approx. 2.5 mmH2O). The septum coalesces aspirated micro-drops; filtering efficiency is typically 60–90% for average particle size ≈ 5 µm. The component supports continuous discharge even during suction, preventing oil deposition in main ducts and extending maintenance intervals for downstream filters.

Operational and environmental impact
Installing the V4 increases the volume of air that can be drawn from the machine tool while avoiding drag effects. This improves oily-vapor extraction efficiency, reduces oil consumption and spare parts usage, and lowers fan load and overall energy consumption of the suction system, contributing to a reduced CO2 footprint.

Case history / Performance example
Field tests on high-pressure machine tools (80–100 bar) using whole oil ~5 cSt show average recovery of about 6 L/day per machine. At an example oil cost of €4.00/L and 285 working days/year, this corresponds to roughly €6,840/year saved per machine tool.

Characteristics / technical specifications

• Denomination: FAMA V4 (coalescing pre-filter)
• Shape: cylindrical pre-filter with truncated cone
• Installation: inserted along suction system piping
• Oil recovery: condenses and recovers up to ~95% of oil in oily vapors
• Filter media: high-density metal mesh filter septum (coalescing)
• Pressure drop: low, approx. 2.5 mmH2O
• Filtering efficiency: ~60–90% (average particle size ≈ 5 µm)
• Continuous discharge: available even during suction phase
• Operational benefits: continuous oil recovery to machine tool, reduced pollutant load to downstream filters, extended maintenance intervals
• Performance example: ~6 L/day recovered on high-pressure machine tools (80–100 bar) with 5 cSt oil
• Environmental/energy impact: reduced oil and spare parts consumption, lower CO2 footprint, reduced system energy consumption due to less filter clogging