Coalescing Filters

Part No: 9.4582.1

Core Technical Specifications

Filtration Precision: Solid particles ≥1 μm, liquid oil & water aerosols ≥1 μm

Residual Oil Content Downstream: ≤0.3 mg/m³, compliant with ISO 8573-1 Class 3 clean compressed air standard

Filtration Efficiency: 99.99% removal efficiency for 1 μm liquid aerosols

Filter Media: Multi-layer gradient hydrophobic borosilicate glass fiber composite, outer green oleophobic anti-re-entrainment foam sleeve with anti-static treatment

Max Working Pressure: 1.6 MPa 

Continuous Operating Temperature: -20°C ~ 80°C

Standard Replacement Cycle: Replace after 4,000 operating hours or 12 months, whichever comes first

Differential Pressure Thresholds

Initial clean differential pressure: ≤0.013 MPa

Mandatory replacement alarm: ΔP ≥ 0.06 MPa

Sealing & Support Construction

End caps: Reinforced high-impact PA polypropylene

Seal: Integrated single NBR nitrile rubber full-circle gasket, zero air bypass leakage

Inner & outer support cage: Double-layer perforated 304 stainless steel mesh, anti-deformation under full rated airflow

It greatly reduces liquid contamination load on F ultrafine coalescer and A activated carbon cartridges, extends their service life and cuts overall system maintenance cost.

Large liquid holding capacity for high-humidity workshop environments

Thick deep-pleated gradient glass fiber matrix holds massive volumes of condensed oil and condensate, avoiding rapid saturation in facilities with underperforming aftercoolers or refrigerated dryers.

Low airflow resistance to save long-term compressor energy cost

Optimized deep-fold glass fiber maximizes effective filtration area, maintaining stable low pressure drop under 24/7 full-load continuous operation, lowering extra power consumption of Kaeser screw air compressor units.

Hydrolysis & abrasion resistant media with no fiber shedding

Oleophobic borosilicate glass fiber combined with stainless steel support cage prevents fiber detachment under long-term humid compressed air impact, eliminating secondary pipeline contamination to downstream pneumatic valves and general processing equipment.

Kaeser standard bayonet quick swap design without housing modification

Working Principle

Pre-cleaned compressed air from P particulate prefilter flows outside-in through the filter cartridge:

Bulk condensed water and large solid particles are blocked by outer green hydrophobic foam layer;

Medium-sized oil & water aerosols collide and coalesce into large liquid droplets through multi-layer gradient borosilicate glass fiber media;

Outer anti-re-entrainment foam prevents coalesced liquid droplets from being blown back into high-speed airflow;

Separated oil and condensate drain down to the filter bowl by gravity and automatic drain valve;

Medium-clean dry compressed air flows downstream to F ultrafine coalescer for advanced precision polishing treatment.

Application Industries

General metal machining workshops, small metal forging plants, textile printing factories, packaging printing equipment, auto repair spray booths, small standalone Kaeser air compressor stations, construction machinery air supply systems, ordinary small automatic pneumatic automation production lines, low-demand food packaging equipment.