Coalescing Filters

Part No: 2258293605 

Core Technical Specifications

Filter Media Structure: Multi-layer gradient borosilicate microglass composite, outer white hydrophobic & oleophobic drainage foam to eliminate liquid re-entrainment, compact deep pleated design for high dirt holding capacity

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: 1.5℃ ~ 80℃

Standard Replacement Cycle

4,000 working hours / 12 months under clean industrial air conditions; shorten to 2,000–3,000 hours in dusty, high-humidity spray workshops. Replace 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 Caps: Reinforced red PA polymer plug-in locking cap with integrated flow diversion ribs

Seal System: Integral built-in NBR nitrile rubber O-ring gasket, zero air bypass, resistant to aging caused by compressor oil and acidic condensate

Key Product Advantages

Second-stage compact medium polishing barrier to protect downstream ultrafine filter and activated carbon filter

Installed after primary coarse pre-filter, this FG-grade element intercepts bulk condensed water, large oil droplets and 1μm oil mist. It drastically reduces liquid contamination load on downstream high-precision filter elements, extends their service life and cuts spare parts costs for small pneumatic systems.

Compact high dirt and liquid holding capacity for limited-space equipment

Miniature deep-pleated microglass matrix holds sufficient volumes of oil and condensate within small dimensions. The outer white drainage foam accelerates liquid separation and gravity discharge, slowing pressure rise in small workshop air loops and reducing unplanned downtime caused by frequent filter replacements.

Heat-stabilized media, zero fiber shedding to avoid secondary pipeline contamination

Heat-cured borosilicate microglass composite paired with stainless steel support mesh prevents glass fiber powder from shedding into small-bore air pipelines, protecting micro spray nozzles, tiny laser optical lenses and miniature solenoid valves from clogging failures.

Optimized low permanent differential pressure to reduce small compressor power consumption

Uniform gradient pore layout minimizes airflow resistance throughout the entire service cycle. Stable low backpressure lowers continuous power consumption of mini screw compressors and portable air pumps, cutting long-term factory electricity expenses.

Working Principle

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

Residual large water droplets and fine solid contaminants are trapped by the outer white hydrophobic foam and drain into the mini 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.

The outer anti-re-entrainment foam prevents separated liquid droplets from being re-carried by high-speed compact compressed airflow.

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

Medium-clean dry compressed air flows downstream to the FG ultrafine coalescing filter for further precision purification.

Application Industries

Portable small spray guns, mini laser marking equipment, laboratory analytical instruments, cosmetic micro-filling production lines, medical & dental small gas supply, miniature automation test benches, small food sample packaging equipment, precision electronic workstation auxiliary air supply.