Coalescing Filters

Part No: 9.4890.0

Core Technical Specifications

Outlet Residual Oil Vapor Content: ≤0.003 mg/m³, fully meets ISO 8573-1 Class 0 oil-free ultra-pure air standard

Filter Media Structure: High-density granular activated carbon composite core, front built-in borosilicate microglass pre-filter interception layer; fully encapsulated carbon matrix to prevent carbon powder shedding, outer black hydrophobic anti-re-entrainment foam layer

Operating Limits

Max Working Pressure: 1.6 MPa

Inlet air prerequisite: Must pass dryer + FE ultrafine filter, inlet air must be dry and free of liquid oil droplets

Standard Replacement Interval

Reference working life: 1,000–2,000 hours under clean, low-oil load conditions; high oil load/spray workshop shorten to 800–1,200 hours.

End Caps: Reinforced black PA polymer locking head with integrated flow diversion ribs to reduce airflow turbulence

Seal System: Integrated full-circle NBR nitrile rubber gasket, zero air bypass leakage, resistant to compressor oil, acidic condensate and long-term aging

Inner & Outer Support Cage: Double-layer perforated 304 stainless steel mesh, anti-collapse under full rated large airflow

Key Product Advantages

Final-stage terminal adsorption barrier to produce Class 0 oil-free compressed air

Installed downstream of FE high-precision coalescing filter, this KA-grade cartridge adsorbs gaseous oil vapor that glass fiber coalescing media cannot intercept. It completely eliminates oily odor and volatile organic contaminants, protecting high-sensitivity production equipment and finished product quality.

High-capacity activated carbon matrix with long effective service life

Uniform high-porosity coconut shell activated carbon filling provides massive adsorption storage volume, delaying saturation even under continuous operation. Front microglass pre-layer traps residual liquid oil mist before contacting carbon core, avoiding premature carbon poisoning and extending service cycle.

Integrated anti-carbon-shedding sealing structure, no secondary pipeline contamination

Activated carbon core is fully wrapped and fixed by multi-layer support mesh and foam; zero carbon powder shedding under long-term high-flow airflow, preventing micro spray nozzles, laser optical lenses and cleanroom pipelines from blockage and carbon pollution.

KAESER optimized low-loss flow channel design to reduce compressor energy consumption

Smooth graded flow structure minimizes airflow resistance; pressure loss is up to 50% lower than generic aftermarket carbon filters, lowering continuous load and power consumption of main screw compressors, cutting long-term factory electricity costsKaeser

Working Principle

Dry, pre-polished compressed air flows through the cartridge from outside to inside:

Front integrated microglass interception layer traps residual tiny liquid oil droplets and fine solid particles carried over from upstream FE filter;

Clean dry gas penetrates the high-density activated carbon core; gaseous oil vapor, hydrocarbon and odor molecules are permanently adsorbed onto carbon micropores;

Outer stainless steel protective mesh prevents carbon foam abrasion and carbon powder from flowing into downstream piping;

Oil-vapor-free, odorless compressed air exits from the inner stainless steel support tube and supplies terminal high-precision production equipment.

Application Industries

Automotive large electrostatic spray booths, heavy industrial laser cutting equipment, pharmaceutical mass aseptic filling production lines, central cleanroom air supply for electronics assembly, food & beverage sterile packaging factories, medical central medical gas supply, multi-station precision automation production lines requiring ISO 8573-1 Class 0 oil-free compressed air.