Coalescing Filters

Part No: E142KD

Core Technical Specifications

Filtration Grade: KD High Efficiency Submicron Ultrafine Coalescing Grade

Absolute Filtration Accuracy: Solid particles & liquid oil/water aerosols ≥0.01 μm

Multi-layer deep-pleated imported HV UK borosilicate gradient glass fiber composite media, outer thick red hydrophobic & oleophobic PU drainage foam. Integrated liquid diversion anti-re-entrainment barrier prevents separated liquid oil from being re-carried by continuous medium-speed airflow.

Operating Limits

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: 1.5°C ~ 80°C

4,000 operating hours / 12 months (whichever comes first) under clean low-dust environments; shorten to 2,000–3,000 hours for paint spray booths, foundries and high-humidity dusty workshops. Mandatory replacement when differential pressure ΔP ≥ 0.07 MPa.

Differential Pressure Replacement Thresholds

Initial pressure drop of brand-new element: ≤0.013 MPa

Max saturated allowable differential pressure: ≤0.125 MPa

Mandatory alarm replacement threshold: ΔP ≥ 0.07 MPa

Sealing & Support Construction

End Cap: Reinforced black PA polymer integrated bayonet lock cap with internal flow diversion channels

Seal System: One-piece molded NBR nitrile rubber O-ring, zero bypass leakage, resistant to aging caused by compressor oil and acidic condensate corrosion

Inner & Outer Support Cage: Single-layer perforated 304 stainless steel mesh, lightweight anti-collapse reinforcement for stable full-flow operation

Key Product Advantages

Core high-precision polishing stage to extend service life of downstream carbon filters

Installed after E142KE medium coalescer, KD grade captures invisible trace submicron oil mist and micro water droplets that 1μm medium filters cannot separate. It significantly reduces liquid contamination load on terminal E142KA activated carbon elements, extends carbon service cycle and cuts overall factory spare parts expenditure and maintenance frequency.

Large dust & oil holding capacity with stable low differential pressure

Proprietary deep-fold glass fiber matrix stores massive oil sludge, condensate and solid dust without rapid pressure rise, suitable for 24-hour non-stop continuous production for medium air consumption workshops. Outer red hydrophobic foam rapidly drains liquid to filter bowl, minimizing oil re-entrainment risk.

Heat-stabilized glass fiber media eliminates fiber shedding and secondary pipeline contamination

High-temperature cured borosilicate glass fiber maintains stable structural integrity under long-term 80°C operating temperature without softening, pulverization or fiber shedding, preventing blockage of downstream precision equipment such as spray guns, laser optical lenses and proportional solenoid valves.

Low permanent differential pressure energy-saving design to reduce air compressor power consumption

Uniform gradient pleat layout delivers minimal airflow resistance over the full service cycle. Stable low backpressure reduces continuous motor loading of screw air compressors and lowers long-term workshop electricity operating costs.

Working Principle

Pre-dried medium-volume compressed air passes through the filter cartridge from outside to inside:

Residual tiny water droplets and fine solid impurities are trapped by outer red hydrophobic foam and drain down to the filter bowl by gravity.

0.01μm oil-water micro-aerosols collide and coalesce into large separable liquid droplets while passing through multi-layer gradient borosilicate glass fiber media.

Outer anti-re-entrainment foam barrier prevents separated liquid oil and water from being re-carried by high-speed medium-volume compressed airflow.

Collected oil and condensate are automatically discharged via external electronic zero-loss drain valve.

Ultra-clean air with residual liquid oil ≤0.008 mg/m³ flows downstream to E142KA activated carbon filter for secondary oil vapor removal.

Application Industries

Small & medium automotive component electrostatic spray booths, desktop laser marking & cutting equipment, small-scale pharmaceutical aseptic filling stations, general pneumatic pipeline air supply for electronics factories, small sterile packaging lines for food & beverage, precision instrument pneumatic equipment requiring strict ISO 8573-1 Class 1 ultra-clean compressed air.