Coalescing Filters

Part No: CE0372NB

Core Technical Specifications

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

Residual Liquid Oil Content at Outlet: ≤0.6 mg/m³ (0.6 ppm), compliant with ISO 8573-1 Class 3 general industrial clean air standard

Filtration Efficiency: 99.925% removal efficiency for 1μm oil mist aerosols, certified per ISO 12500-1 test standard

Filter Media Structure

Multi-layer deep-pleated imported borosilicate gradient glass fiber composite media, outer integrated hydrophobic & oleophobic PU drainage foam. Built-in liquid diversion anti-re-entrainment barrier captures separated liquid oil and water to prevent re-entrainment into downstream pipelines by high-speed airflow.

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: 1°C ~ 80°C

Standard Replacement Cycle

4,000 operating hours or 12 months (whichever comes first) under clean workshop environments; shorten to 2,000–3,000 hours for paint spray booths, foundries and high-humidity dusty workshops. Mandatory replacement when differential pressure ΔP ≥ 0.06 MPa.

Differential Pressure Replacement Thresholds

Initial pressure drop of brand-new element: ≤0.012 MPa

Mandatory alarm replacement threshold: ΔP ≥ 0.06 MPa

Sealing & Support Construction

End Cap: Reinforced black PA plastic integrated claw lock cap with internal flow diversion channels

Seal System: One-piece molded NBR nitrile rubber O-ring, zero bypass leakage, resistant to compressor oil aging 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

Mid-stage primary coalescing protection to extend service life of downstream high-precision and carbon filters

Installed after NBNT particulate prefilter and before NC ultrafine filter, it intercepts massive condensed pipeline water, rust scale and large 1μm liquid oil mist. It significantly reduces liquid contamination load on downstream high-precision filter elements, extends overall consumable service cycle and lowers factory maintenance expenditure.

Large dust & oil holding capacity with stable low differential pressure throughout service life

Proprietary deep-pleated glass fiber matrix holds large volume of oil sludge and solid dust without rapid pressure rise, ideal for 24-hour non-stop heavy-duty production lines. Outer hydrophobic foam quickly drains coalesced liquid down to the filter bowl drain port and greatly reduces oil re-entrainment risk.

High-temperature stable glass fiber media with zero fiber shedding to avoid 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 including spray guns, laser optical lenses and proportional solenoid valves.

Low permanent differential pressure energy-saving design to cut 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 slashes long-term workshop electricity operating costs.

Working Principle

Dry medium-flow compressed air passes through the filter cartridge from outside to inside:

Large water droplets and coarse solid impurities are trapped by outer hydrophobic foam and drain down to the filter bowl by gravity.

1μm 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.

Medium-clean air with residual liquid oil ≤0.6 mg/m³ flows downstream to CE0372NC ultrafine coalescing filter for secondary high-precision purification.

Application Industries

Small & medium automotive component electrostatic spray booths, standard laser marking & cutting production lines, small-scale pharmaceutical aseptic filling workshops, general pneumatic pipeline air supply for electronics factories, small sterile packaging lines for food & beverage, general machinery pneumatic equipment requiring ISO 8573-1 Class 3 medium-clean industrial compressed air.