Coalescing Filters

Part No: A51130374

Core Technical Specifications

Multi-layer gradient borosilicate microglass composite media, outer blue hydrophobic & oleophobic PU drainage foam, deep pleated design for high dirt holding capacity, built-in anti-re-entrainment barrier to prevent liquid oil carryover.

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: 1.5℃ ~ 80℃

Standard Replacement Cycle

4,000 working hours / 12 months under clean intake air; reduce to 2,000–3,000 hours for dusty spray booth, foundry environments. Mandatory replacement when 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 Caps: Reinforced black PA polymer top locking head with flow diversion ribs

Seal System: Integrated full-circle NBR nitrile rubber O-ring, zero air bypass, resistant to compressor oil and acidic condensate aging

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

Key Product Advantages

Second-stage medium polishing protection extends service life of downstream NC and ND precision filters

Installed after GP prefilter, this B-grade element intercepts bulk condensed water, pipeline rust and 1μm large oil mist. It drastically reduces liquid contamination load on ultrafine and carbon filter elements, cuts overall factory spare parts consumption and maintenance frequency.

Compact large dirt & liquid holding capacity ensures stable low differential pressure

Deep-pleated gradient microglass matrix stores abundant oil, condensate and solid dust. Outer blue drainage foam accelerates gravity liquid backflow, slowing pressure rise in small & medium production air systems and reducing unplanned downtime from frequent filter replacement.

Heat-stabilized media prevents fiber shedding and secondary pipeline pollution

Heat-cured borosilicate microglass paired with stainless steel mesh stops glass fiber powder from shedding into air piping, protecting spray guns, laser lenses and miniature proportional solenoid valves from clogging failures.

Low permanent differential pressure design reduces small compressor power loss

Uniform gradient pore layout maintains ultra-low airflow resistance under full rated flow throughout service life. Stable low backpressure lowers continuous running load of small screw compressors, cutting long-term workshop electricity costs.

Working Principle

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

Large water droplets and solid impurities are trapped by outer blue hydrophobic foam and drain into the filter bowl via gravity.

1μm oil-water micro-aerosols collide and coalesce into large separable liquid droplets while passing through multi-layer gradient borosilicate microglass media.

Outer anti-re-entrainment foam prevents separated liquid oil from being re-carried by high-speed compressed airflow.

Collected oil and condensate are automatically discharged via electronic float drain valve.

Medium-clean dry compressed air flows downstream to NC ultrafine coalescing filter for secondary high-precision purification.

Application Industries

Mini laser marking equipment, small automotive spray booths, laboratory analytical instruments, cosmetic filling lines, dental & medical small gas supply, small food aseptic packaging equipment, precision electronic workstation auxiliary air supply.