Coalescing Filters

Core Technical Specifications

Absolute Filtration Precision: 3 μm solid particles & bulk liquid water droplets

Solid Contaminant Removal Efficiency: ≥99.9% for all pollutants ≥3 μm

Oil Retention: Only separate free liquid water and large oil droplets, not designed for submicron oil aerosol removal

Operating Pressure Range: 0.4 ~ 1.6 MPa

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

Heavy dust / high humidity workshop: 2,200–3,500 hours

Mandatory Replacement Trigger

Differential pressure ΔP ≥ 0.05 MPa or obvious airflow reduction at terminal equipment

Differential Pressure Thresholds

Initial pressure drop of new element: ≤0.009 MPa

Blockage alarm differential pressure: ≥0.05 MPa

Key Product Advantages

Large dirt holding capacity extends downstream filter service life

Deep pleated synthetic fiber media stores massive pipeline rust, metal wear debris and water sludge, effectively lowering contaminant intake to medium & ultra-fine filters and cutting overall filter replacement costs.

Ultra-low initial pressure drop for energy saving

Open gradient fiber layout delivers minimal airflow resistance; differential pressure rises slowly during continuous operation to reduce long-term compressor power consumption.

Double metal mesh anti-collapse protective structure

Internal & external perforated metal support mesh prevents fiber media deformation under long-term high airflow negative pressure, maintaining stable filtration efficiency throughout the service cycle.

Tool-free rapid maintenance design

A single operator can complete cartridge disassembly and replacement within 3 minutes, minimizing industrial production downtime.

Working Principle

Raw compressed air discharged from screw compressor flows from outside to inside through gradient synthetic fiber media.

Large solid contaminants including pipeline rust, metal dust and sand particles are trapped by outer fiber layers.

Bulk condensed water droplets and free liquid oil collide with hydrophobic fibers, coalesce into large droplets and drain downwards to filter bowl via gravity.

Pre-cleaned compressed air flows downstream to medium coalescing filter for submicron oil mist removal.

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

Application Scope

General machinery processing workshops, plastic injection molding lines, textile machinery, laser cutting equipment, pre-protection filtration before automotive painting air pipelines, food packaging pneumatic systems, construction engineering air stations.