Coalescing Filters

Core Technical Specifications

Contaminant Removal Efficiency: ≥99.925% for all pollutants ≥1 μm

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

High humidity / heavy oil-laden workshop: 2,500–3,800 hours

Mandatory Replacement Trigger

Differential pressure ΔP ≥ 0.05 MPa or obvious oil mist visible downstream

Differential Pressure Thresholds

Initial pressure drop of new element: ≤0.007 MPa

Blockage alarm differential pressure: ≥0.05 MPa

Key Product Advantages

Medium 1μm coalescing performance to protect downstream high-precision filters

Captures bulk condensed water, large oil droplets and medium-sized dust particles, cutting pollutant intake to AA/AX filters and doubling their service cycle to reduce overall maintenance costs.

Low initial pressure drop for energy saving

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

Dual-end integrated full-perimeter sealing design

Epoxy-molded green nylon end caps with embedded nitrile O-rings block unfiltered bypass airflow, maintaining stable medium coalescing efficiency throughout the service life.

Working Principle

Raw compressed air pre-treated by PF coarse filter flows from outside to inside through gradient glass fiber media.

Large condensed water droplets, pipeline rust and coarse dust are trapped by the outer pre-layer and drain downward to the filter bowl via gravity.

1 μm oil aerosols and medium solid particles collide with glass fiber filaments, coalesce into large liquid oil droplets and flow down for drainage.

Medium-clean compressed air flows downstream to AA high-efficiency coalescing filter for deep submicron oil mist removal.

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