Coalescing Filters

Part No: H500E

Core Technical Specifications

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 avoid re-entrainment into downstream pipelines by high-speed airflow.

Operating Limits

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: 1.5°C ~ 80°C

4,000 operating hours or 12 months (whichever comes first) under clean low-dust 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.

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

Mandatory alarm replacement threshold: ΔP ≥ 0.06 MPa

End Cap: Reinforced black PA plastic integrated bayonet lock cap with built-in 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 H500B particulate prefilter and before H500D 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 cuts 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 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 such as 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 lowers long-term workshop electricity consumption.

Working Principle

Dry large-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 large-volume compressed airflow.

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

Medium-clean air with residual liquid oil ≤0.1 mg/m³ flows downstream to H500D ultrafine coalescing filter for secondary high-precision purification.

Application Industries

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