Coalescing Filters

Part No: 901524

Core Technical Specifications

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

Max Working Pressure: 1.6 MPa

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

Mandatory alarm replacement threshold: ΔP ≥ 0.07 MPa

Sealing & Support Construction

End Cap & Base: Reinforced integrated black PA polymer bayonet lock base 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

Core high-precision polishing stage to drastically extend downstream carbon filter service life

Installed after 901523 medium coalescer, GR4 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 901525 activated carbon elements, extends carbon service cycle and cuts overall factory spare parts expenditure and maintenance frequency.

Compact 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, matching non-stop continuous production for small-medium air consumption workshops. Outer white 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 including mini spray guns, desktop laser optical lenses and miniature 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 small screw air compressors and slashes long-term workshop electricity operating costs.

Working Principle

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

Residual tiny water droplets and fine solid impurities are trapped by outer 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 small-volume compressed airflow.

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

Ultra-clean air with residual liquid oil ≤0.008 mg/m³ flows downstream to 901525 activated carbon filter for secondary oil vapor removal.

Application Industries

Small automotive component electrostatic spray booths, desktop laser marking & cutting equipment, small-scale pharmaceutical aseptic filling stations, laboratory precision pneumatic instruments, electronics factory small cleanroom gas supply, food & beverage mini sterile packaging lines requiring strict ISO 8573-1 Class 1 ultra-clean compressed air.