Coalescing Filters

Core Technical Specifications

Filtration Grade: Medium coalescing pre-stage, removes solid dust, bulk condensed water droplets and medium-size compressor lubricant aerosols

Absolute Filtration Precision: 1 μm

Capture Efficiency: ≥99.9% for all solid & liquid contaminants ≥1 μm

Max Continuous Working Pressure: 1.6 MPa

Operating Temperature Range: 3°C ~ +66°C

Max Inlet Relative Humidity: ≤75% RH

Standard Replacement Cycle

Clean & low-humidity workshop: 6,000–8,000 operating hours or 12 months

Paint shop, high humidity, heavy dust & oil load, 24/7 continuous operation: 3,000–5,000 hours

Mandatory Replacement Trigger: Differential pressure ΔP ≥ 0.07 MPa or visible water/oil carryover downstream pipelines

Initial Pressure Drop of Brand-New Element: ≤0.018 MPa

Alarm Replacement Differential Pressure: ≥0.07 MPa

Perforated stainless steel inner & outer support cages, anti-corrosion and anti-deformation under variable airflow surges

Outer integrated drainage fleece gathers condensed water & oil and guides liquid downward to housing automatic drain valve by gravity

Integrated oil-resistant EPDM full-circle top seal, zero bypass air leakage

Static conductive fiber structure eliminates static ignition risk in oil-air mixed working environments

Key Product Advantages

Protect downstream high-precision ultra-coalescing and carbon filters to reduce overall maintenance expenditure

Traps most bulk liquid water and oil droplets inside compressed air, greatly reduces contaminant load on F2378DH ultra-coalescer, and extends service life of expensive F2378AC activated carbon filters by over 50%.

Deep-pleated gradient glass fiber media with large dirt holding capacity & gentle pressure rise curve

Large pleated surface area holds massive oil sludge, dust and liquid contaminants; differential pressure climbs slowly throughout full service cycle to cut extra power consumption of upstream air compressors.

Integrated hydrophobic drainage fleece prevents secondary liquid re-entrainment

Outer polyester fleece rapidly coalesces large liquid droplets and drains by gravity, avoiding re-atomization of liquid carried by high-speed airflow into downstream production pipelines.

Stainless steel anti-corrosion framework adapts to humid industrial workshop conditions

Full stainless steel support cages resist rust and condensate corrosion, suitable for long-term continuous operation in general machining, plastic molding, sandblasting and light painting workshops.

Bayonet tool-free quick-install design for single-person fast maintenance

Isolate and vent housing internal pressure, twist open bayonet cap, pull out old cartridge and install new unit within 5 minutes without special tools, minimizing unplanned production downtime.

Coalescing Working Principle

Pre-filtered compressed air from F2378AO particulate filter enters outer polyester drainage fleece layer; large water and oil droplets are intercepted and flow downwards to drain port by gravity.

Remaining 1 μm oil mist and fine dust penetrate multi-layer gradient glass fiber; tiny liquid particles collide, aggregate and coalesce into continuous liquid film that flows back down to drain.

Processed compressed air with residual liquid oil ≤0.6 ppm flows downstream to F2378DH for 0.01 μm ultra-fine polishing filtration.

The element cannot be cleaned or regenerated on-site. Once saturated with oil sludge and dust, differential pressure surges and separation efficiency fails, requiring full cartridge replacement.

Application Scope

General mechanical machining, metal welding, injection molding pneumatic equipment, light-duty painting lines, textile factory central air supply, packaging machinery, small mining pneumatic tools.