Coalescing Filters

Core Technical Specifications

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

Operating Pressure Range: 0.4 ~ 1.6 MPa

Operating Temperature Range: 2°C ~ +50°C

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

Heavy humidity / high oil-laden painting workshop: 2,500–3,800 hours

Mandatory Replacement Trigger

Differential pressure ΔP ≥ 0.05 MPa or visible oil contamination detected in downstream compressed air pipelines

Differential Pressure Thresholds

Initial pressure drop of new element: ≤0.012 MPa

Blockage alarm differential pressure: ≥0.05 MPa

Key Product Advantages

Patented Nautilus multi-layer wrapped gradient glass fiber media

3D structured coalescing barrier prevents wet band formation and oil re-entrainment, delivering stable ultra-fine filtration

Large dirt holding capacity with slow pressure rise

Deep-folded multi-layer media stores massive oil sludge and fine dust, slowing differential pressure increase during continuous operation and cutting long-term compressor energy consumption.

Double O-ring integrated sealing structure for zero bypass leakage

Epoxy fully sealed end caps with embedded dual O-rings block short-circuit unfiltered airflow, ensuring 100% air passes through ultra-fine coalescing media for consistent clean air output.

Working Principle

Pre-filtered compressed air processed by DD70+ medium filter flows from outside to inside through gradient glass fiber media.

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

Invisible 0.01 μm ultra-fine oil mist and micro solid particles collide with glass fiber filaments, coalesce into large liquid oil droplets and flow down for drainage.

Ultra-clean compressed air flows downstream to QD70+ activated carbon filter for final oil vapor and odor adsorption.

The 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, laser cutting & laser marking machines, food sterile packaging, laboratory gas supply, printing industry, dental medical air systems.