Coalescing Filters

Part No: AU280-35

Core Technical Specifications

Core Function: Remove gaseous oil vapor, hydrocarbon fumes, oily odor, residual trace liquid oil mist; capture solid particles ≥0.01 μm

Composite Media Structure

Front Layer: Micro borosilicate glass fiber depth filter to trap residual submicron oil mist and fine dust

Max Working Pressure: 1.6 MPa

Continuous Operating Temperature: ≤79°C 

Standard Replacement Cycle: 2,000 operating hours or 12 months, whichever comes first

Differential Pressure Thresholds

Initial clean differential pressure: ≤0.015 MPa

Sealing & Support Construction

End Caps: Reinforced impact-resistant polypropylene

Seal: Integrated urethane/NBR rubber gasket, zero air bypass leakage

Key Product Advantages

Final-stage adsorption filter for fully oil-free critical compressed air

Installed as the last purification stage after QU ultra-high efficiency coalescer, this AU-grade carbon element eliminates gaseous oil vapor and persistent oily odor that glass fiber coalescing media cannot remove. Silicon-free formula optional to eliminate paint pinhole/fogging defects for automotive topcoat spraying lines.

High carbon adsorption capacity & stable service life

High-specific-surface-area activated carbon foam delivers strong adsorption performance for mineral oil vapor, maintaining stable purification performance in medium-humidity workshop environments, cutting frequent downtime for filter replacement.

Optimized airflow path to reduce compressor energy consumption

Flow-oriented folded composite media minimizes airflow resistance, avoiding excessive pipeline pressure loss that increases air compressor motor power draw, lowering long-term electricity operating costs.

Corrosion-resistant all-metal support cage

Double-layer stainless steel inner/outer cages prevent media collapse under full-load airflow; durable rubber seal resists aging from lubricant oil and condensed water, ensuring no air bypass leakage.

Bayonet quick-swap installation without housing disassembly

Working Principle

Purified compressed air from QU ultra-high efficiency coalescer flows outside-in through the cartridge:

The front glass fiber layer traps residual tiny oil mist and fine solid contaminants;

Air penetrates the high-density activated carbon foam layer; gaseous oil vapor, volatile organic compounds and odor molecules are fully captured by carbon micropores;

Clean, dry, odorless and oil-free compressed air flows out from the inner support tube to terminal production equipment;

Trace condensed liquid oil captured by the front filter layer drains down to the filter bowl by gravity and automatic drain valve.