Coalescing Filters

Core Technical Specifications

Absolute Filtration Precision: 0.01 μm submicron solid particles & oil aerosols

Filter Media: Multi-layer wrapped hydrophobic & oleophobic borosilicate glass fiber composite, hydrolysis-resistant, compatible with all mineral and synthetic compressor coolants

Silicone-Free Construction: Suitable for automotive electrostatic painting lines to avoid paint pinhole defects

Standard Replacement Interval

Clean indoor workshop: 4,000–6,000 operating hours or 12 months

High humidity / heavy oil-laden painting workshop: 2,500–3,800 hours

Mandatory Replacement Trigger

Differential pressure ΔP ≥ 0.05 MPa or visible oily odor/contamination detected in downstream pipelines

Differential Pressure Thresholds

Initial pressure drop of new element: ≤0.012 MPa

Blockage alarm differential pressure: ≥0.05 MPa

Key Product Advantages

Ultra-fine 0.01μm coalescing performance for Class 1 clean air

Captures invisible micro oil mist and fine dust, meeting strict air purity requirements for painting, precision electronics and pharmaceutical manufacturing.

Built-in anti re-entrainment barrier avoids secondary oil contamination

Unique internal barrier structure stops coalesced liquid oil from mixing back into high-speed airflow, maintaining stable low oil emission during long continuous operation.

Large dirt holding capacity with slow pressure rise

Deep folded gradient glass fiber media stores massive oil sludge and dust, slowing differential pressure growth and reducing long-term compressor power consumption.

Full perimeter dual-end sealing design for zero bypass leakage

Epoxy-molded green nylon end caps with embedded nitrile O-rings block unfiltered bypass airflow, maintaining stable ultra-fine filtration efficiency throughout the service life.

Working Principle

Raw compressed air pre-treated by PF coarse filter & AO medium filter flows from outside to inside through gradient glass fiber media.

Coarse liquid water droplets and large solid dust are trapped by the outer pre-layer and drain downwards to the filter bowl via gravity.

Invisible 0.01μm ultra-fine oil aerosols collide with glass fiber filaments, coalesce into large liquid oil droplets and flow down for drainage, blocked by anti re-entrainment barrier.

Ultra-clean Class 1 compressed air flows downstream to ACS activated carbon filter for final oil vapor and odor adsorption.

Filter media cannot be cleaned, washed or regenerated; full element replacement is required once saturated by oil sludge and dust contaminants.

Application Scope

Automotive electrostatic painting workshops, precision electronic component assembly, pharmaceutical sterile production, medical dental air supply, food sterile packaging, laboratory analytical instruments, laser cutting & laser marking equipment.