Coalescing Filters

Core Technical Specifications

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

Absolute Filtration Precision: 1 μm

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

Filter Media: Multi-layer deep-pleated borosilicate glass fiber composite + outer oleophobic & hydrophobic polyester drainage fleece, anti-hydrolysis, static conductive, low permanent pressure drop

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

Differential Pressure Threshold

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

Alarm Replacement Differential Pressure: ≥0.07 MPa

Structural Features

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

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

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

Key Product Advantages

Protect downstream high-precision ultra-coalescing and carbon filters to cut total maintenance cost

Traps over 90% of bulk liquid water and oil droplets in compressed air, drastically reduces contaminant load on F2800DH ultra-coalescer, and extends service life of expensive F2800AC activated carbon filters by more than 50%.

Deep-pleated gradient glass fiber media with high dirt holding capacity and gentle pressure rise curve

Extra large pleated surface area holds massive oil sludge, water and dust contaminants; differential pressure climbs slowly throughout full service cycle to reduce extra power consumption of large 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 large-volume airflow into downstream pipelines.

Stainless steel anti-corrosion framework adapts to heavy industrial humid environments

Full stainless steel cages resist rust and condensate corrosion, suitable for long-term continuous operation in large auto painting, heavy laser cutting, mass pharmaceutical and food production 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 large-scale production downtime.

Coalescing Working Principle

Pre-filtered compressed air from F2800AO particulate filter enters outer polyester drainage fleece; 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 F2800DH 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

Large automotive component electrostatic painting lines, heavy-duty metal fiber laser cutting factories, central workshop general machining, large plastic injection molding pneumatic equipment, textile mill central air supply, bulk food sterile packaging production.