Coalescing Filters

Part No: EA290U

Core Technical Specifications

Multi-layer gradient borosilicate glass fiber composite media, outer blue hydrophobic & oleophobic PU drainage foam. Extra deep pleated design maximizes dirt holding capacity with built-in anti-re-entrainment barrier to prevent separated liquid oil from being re-carried by high-speed airflow.

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: -10°C ~ 80°C

6,000 working hours / 12 months under clean intake air; shorten to 3,000 hours for dusty spray booth and foundry environments. Mandatory replacement when differential pressure ΔP ≥ 0.06 MPa.

Differential Pressure Replacement Thresholds

Initial pressure drop of new element: ≤0.012 MPa

Mandatory replacement alarm threshold: ΔP ≥ 0.06 MPa

Sealing & Support Construction

End Cap: All stainless steel metal end cap with integrated positioning boss and flow diversion slots

Seal System: Built-in full-circle NBR nitrile rubber O-ring, zero air bypass, resistant to aging caused by high-temperature compressor oil and acidic condensate

Inner & Outer Support Cage: Double-layer perforated 304 stainless steel mesh, heavy-duty anti-collapse reinforcement for stable medium airflow operation

Key Product Advantages

Front-stage pre-protection to greatly extend service life of downstream high-precision filters

Installed after P-grade coarse prefilter, this U-grade element intercepts pipeline rust, massive condensed water and large 1μm oil mist. It drastically reduces liquid contamination load on H ultrafine coalescer and C carbon adsorber, cutting overall factory spare parts consumption and maintenance frequency.

Ultra-large dirt & oil holding capacity with stable low differential pressure during long full-load production

Deep-pleated gradient glass fiber matrix stores massive oil sludge, condensate and solid dust without rapid pressure rise, suitable for non-stop heavy-duty continuous production. The outer blue foam layer accelerates gravity liquid backflow to reduce liquid residue inside filter bowl.

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

High-temperature cured borosilicate glass fiber will not soften or pulverize under 80°C oil-gas mixing conditions. No glass fiber debris enters air piping to clog spray guns, laser optical lenses and proportional solenoid valves.

Low permanent differential pressure design cuts compressor power consumption

Uniform gradient pore layout maintains minimal airflow resistance throughout the full service cycle. Stable low backpressure reduces continuous load on screw air compressors and lowers long-term workshop electricity costs.

Working Principle

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

Large water droplets and coarse solid impurities are trapped by outer blue hydrophobic foam and drain into 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 prevents separated liquid oil from being re-carried by high-speed medium-volume compressed airflow.

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

Medium-clean air with residual liquid oil ≤0.1 mg/m³ flows downstream to EA290H ultrafine coalescing filter for secondary high-precision purification.

Application Industries

Small-medium automotive component electrostatic spray booths, desktop laser marking & cutting production lines, small-scale pharmaceutical aseptic filling workshops, electronics factory general air supply, small food sterile packaging lines, multi-station small automation equipment, general pneumatic tool pipelines requiring medium-clean industrial compressed air.