COALESCING AND CARTRIDGE FILTERS
Coalescing and cartridge filters are designed to treat air contaminated with oil mist and submicron particles in industrial processes. Through a combination of filtration stages, they effectively separate fine liquid particles and ensure clean, safe air, even in confined spaces or on individual machine tools.
TECHNOLOGY
The typical multistage system includes a metallic prefilter for coarse separation, followed by an oleophobic fiberglass coalescing filter and a final absolute HEPA or cartridge filter to capture submicron particles.
The modular design allows the filtration surface to be adapted to the required flow rates, while the air velocity (0.8–1.0 m/s) is optimized to ensure high efficiency and low pressure drop. Oil mist condensate is automatically collected in a dedicated tank.
ADVANTAGES
These filters provide effective separation of oil mist and fine particles, protecting machinery, operators, and the quality of production processes.
The cartridge configuration allows installation even in compact spaces, while modularity enables integration into centralized systems or single machines.
Differential pressure sensors ensure continuous monitoring of filter condition and stable performance over time.
SECURITY
Coalescing and cartridge filters reduce the risks associated with inhaling oil mist and maintain clean air in work environments.
The multistage system and automatic condensate collection prevent hazardous buildup, while robust construction and integrated sensors ensure safe operation and compliance with industry regulations.
EFFICIENCY
Coalescing and cartridge filters deliver high performance thanks to the multistage system: the prefilter captures coarse particles, the coalescing filter separates oil droplets, and the final filter traps submicron particles.
Tested according to EN 1822, they achieve ≥ 99.97% efficiency on 0.3 µm particles, with emissions ≤ 0.005 mg/Nm³.
Optimized sizing, controlled airflow velocity, and automatic condensate collection ensure consistent efficiency, low pressure loss, and continuous operation even under intensive workloads.
RESULTS
Thanks to modular design and optimized sizing, these filters ensure clean, safe air even during intensive work cycles.
The system guarantees continuous operation, protection of machinery and operators, and compliance with environmental regulations, minimizing emissions of oil mist and submicron particles in the workplace.
TRA I NOSTRI CLIENTI
HOW COALESCING AND CARTRIDGE FILTERS WORK
Coalescing and cartridge filters are designed to effectively remove oil mist and submicron particles generated by industrial processes such as CNC machining with coolant emulsions.
Contaminated air passes through multiple filtration stages: a metallic prefilter traps coarse particles, an oleophobic fiberglass coalescing filter aggregates oil droplets, and the final absolute or cartridge filter captures the finest particles.
The purified air can then be released into the environment or reused in the production cycle, while the separated fluids collect in the condensate tank.
The system is engineered for continuous operation thanks to optimized air velocity and modular filter design.
Automatic condensate collection and differential pressure sensors allow constant monitoring of filter condition, ensuring high and stable performance over time with minimal emissions and controlled pressure drop.
APPLICATIONS OF COALESCING AND CARTRIDGE FILTERS
Coalescing and cartridge filters are used in all industrial processes that generate oil mist or liquid aerosols.
They are particularly suitable for mechanical machining — such as lathes and CNC centers using coolants — as well as welding, grinding, and thermal cutting operations.
They are also used in chemical, pharmaceutical, food, and metallurgical plants, providing purified air and protection for both operators and machinery.
The cartridge configuration makes them suitable even for installations in limited spaces, ensuring high filtration efficiency and continuous operation.
