Coalescing Filters

Part No: 9.4557.1

Core Technical Specifications

Absolute Filtration Precision: Solid & liquid oil/water aerosols ≥0.1 μm

Outlet Residual Liquid Oil Content: ≤0.1 mg/m³, complies with ISO 8573-1 Class 3 clean compressed air standard

Filtration Efficiency: 99.99% capture efficiency for 0.1 μm oil mist aerosols per ISO 12500 test standard

Filter Media Structure: Multi-layer deep-pleated gradient borosilicate glass fiber composite, outer green oleophobic anti-static hydrophobic drainage foam sleeve to prevent liquid re-entrainment

Overall Dimensions: Total length 240 mm, Outer Diameter 76 mm, Net Weight 0.11 kg

Initial differential pressure of new element: ≤0.012 MPa

Mandatory replacement alarm setpoint: ΔP ≥ 0.06 MPa

Key Product Advantages

Second-stage fine polishing barrier to protect downstream KD ultrafine and KA carbon filter elements

Installed after KB basic particulate prefilter, this KE fine coalescer intercepts bulk condensed water, medium oil droplets and most micron-level oil mist that pass the primary filter. It drastically reduces liquid contamination load on terminal KD ultrafine coalescer and KA activated carbon cartridges, extends their service life and cuts overall system maintenance & spare parts expenditure.

Deep-pleated fiber media with large liquid holding capacity for stable long-cycle operation

Optimized multi-fold borosilicate fiber structure expands effective filtration surface area and oil/water retention volume. It resists rapid pressure rise in high-humidity workshops with underperforming aftercoolers, minimizing unplanned production downtime for filter replacement.

Zero fiber shedding integrated design, eliminates secondary pipeline contamination

Heat-stabilized integrated borosilicate microfiber composite combined with full stainless steel cladding cage prevents fiber detachment under continuous medium-flow airflow impact. No glass fiber debris will contaminate laser cutting machines, general pneumatic automation equipment and small spray stations.

Ultra-low permanent differential pressure to reduce compressor energy consumption

Uniform gradient pore distribution minimizes airflow resistance throughout the full service cycle. Stable low backpressure cuts continuous power draw of medium screw air compressors and reduces long-term factory electricity operating expenses.

Working Principle

Pre-cleaned compressed air flows through the filter cartridge from outside to inside:

Residual large condensed water droplets and fine solid particles are blocked by the outer green hydrophobic drainage foam layer;

Medium oil & water micron aerosols collide, merge and form large separable liquid droplets while passing through multi-layer gradient borosilicate glass fiber media;

The outer anti-re-entrainment foam prevents coalesced liquid droplets from being re-carried into high-speed compressed airflow;

Medium-clean dry compressed air flows downstream to the KD ultrafine coalescer for further ultra-precision polishing treatment.

Application Industries

General metal machining workshops, medium laser marking & cutting equipment, textile printing, packaging automation lines, standalone medium screw compressor stations, pneumatic test benches, plastic injection molding auxiliary air supply, food packaging production lines.