Coalescing Filters

Part No: 2901200306

Core Technical Specifications

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

Operating Limits

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 black PA polymer threaded locking head with integrated flow diversion ribs

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

Inner & Outer Support Cage: Double-layer perforated 304 stainless steel mesh, structural reinforcement to avoid media collapse under full rated airflow

Key Product Advantages

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

Installed after primary coarse pre-filter, this DD-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.

High dirt and liquid holding capacity for long stable continuous operation

Thick deep-pleated microglass matrix holds large volumes of oil and condensate. The outer blue drainage foam accelerates liquid separation and gravity discharge, slowing pressure rise in humid workshop environments 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 air pipelines, protecting industrial spray guns, laser optical lenses and precision miniature solenoid valves from clogging failures.

Optimized low permanent differential pressure to reduce compressor power consumption

Uniform gradient pore layout minimizes airflow resistance throughout the entire service cycle. Stable low backpressure lowers continuous power consumption of medium screw compressors, 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 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.

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

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

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

Application Industries

Medium automotive spray booths, medium laser marking & cutting equipment, general manufacturing workshop central air supply, plastic injection molding auxiliary air supply, laboratory analytical instrument air source, food and beverage processing auxiliary gas supply, medium electronic component assembly production lines.