Coalescing Filters

Core Technical Specifications

Filtration Grade: Medium coalescing pre-filter stage, intercepts solid particulate dust, bulk condensed water droplets and medium-sized compressor lubricant aerosols

Absolute Filtration Precision: 1 μm

Capture Efficiency: ≥99.925% for all solid & liquid contaminants ≥1 μm

Residual Liquid Oil at Outlet: ≤0.6 mg/m³, fully compliant with ISO 8573-1 Class 3 industrial compressed air standard

Filter Media: Multi-layer deep-pleated gradient borosilicate glass fiber composite, oleophobic coated, hydrolysis resistant, low permanent pressure drop

Max Continuous Working Pressure: 1.6 MPa

Operating Temperature Range: 1.5°C ~ +66°C

Max Inlet Relative Humidity: ≤75% RH

Standard Replacement Cycle

Clean low-humidity general workshop: 4,000–8,000 operating hours or 12 months

Paint shop, high humidity, heavy dust & oil load, 24/7 full-load 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 304 stainless steel inner & outer support cages, anti-rust and anti-deformation under large-volume airflow fluctuations

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

Single full-circle FKM fluororubber top sealing ring, compatible with all mineral/synthetic compressor oils, zero bypass air leakage

Static conductive fiber framework eliminates static accumulation fire hazard in oil-air mixed industrial environments

Key Product Advantages

Critical front-stage protection to extend service life of downstream high-cost precision filters

Traps over 90% of bulk liquid water and oil droplets inside compressed air, greatly reduces contaminant load on E250AA ultra-coalescer, and extends service life of expensive E250ACS activated carbon filters by more than 60%, cutting overall workshop maintenance expenditure.

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

Extra large pleated filtration area stores massive oil sludge, water and solid dust contaminants; differential pressure rises slowly throughout full service cycle even under continuous heavy oil load, reducing 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 large-volume airflow into downstream precision production pipelines.

304 stainless steel anti-corrosion framework adapts to harsh humid industrial workshop conditions

Full stainless steel cages resist rust and acidic condensate erosion, stable performance in general machining, plastic molding, sandblasting and light-duty painting workshops.

Dual-port 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.

Working Principle

Raw compressed air from E250PF particle filter enters outer polyester drainage fleece layer; large water and oil droplets are intercepted and flow downwards to drain port by gravity.

Remaining 1μm oil mist and fine dust penetrate multi-layer gradient glass fiber media; 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 E250AA 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 heavy mechanical machining, metal cutting & welding, medium-large injection molding pneumatic equipment, light manual painting lines, textile factory central air supply, packaging heavy machinery, laboratory large instrument gas supply, small pharmaceutical auxiliary gas pretreatment.