Coalescing Filters

Model: 2906700400

Core Technical Specifications

Filter Grade: PD High-efficiency coalescing polishing stage

Filtration Precision: 0.01 μm ultra-fine submicron oil mist & micro solid particles

Residual Oil Content at Outlet: ≤0.01 ppm under nominal rated airflow

Filter Media: Multi-layer gradient imported borosilicate micro glass fiber with hydrophobic & oleophobic coating

Rated Airflow Capacity: 520 m³/h

Max Working Pressure: 16 bar / 232 PSIG

Max Continuous Operating Temperature: ≤80℃

Key Product Features

Ultra-fine Oil Mist Deep Polishing Filtration

After primary DD coarse filtration, this element intercepts trace invisible submicron oil aerosol and residual tiny water droplets that coarse filters cannot fully capture. It produces nearly oil-free compressed air and protects downstream UD activated carbon filter from rapid saturation, greatly extending carbon element service life.

Low Pressure Drop Energy-saving Design

Optimized deep pleated glass fiber media expands effective filtration area significantly. It maintains stable low airflow resistance under long-term 24-hour full-load continuous operation, cuts extra power consumption of air compressors and reduces overall factory air supply operation costs.

Extra Large Dirt & Oil Holding Capacity

Multi-gradient layered depth filtration structure stores massive separated lubricating oil and micro solid contaminants, prolongs maintenance intervals and minimizes production downtime for filter replacement.

Perforated Stainless Steel Inner Support Cage

Resists impact of high-speed airflow, prevents filter media collapse, deformation and fiber shedding, and eliminates secondary fiber contamination of clean compressed air, suitable for heavy-duty continuous industrial working conditions.

Working Principle

Compressed air pre-treated by DD520 coarse filter flows into the cartridge from the outer mesh layer. The multi-layer ultra-fine glass fiber medium captures 0.01 μm submicron oil mist particles, which collide and coalesce into large liquid droplets. Liquid droplets sink to the housing bottom drain port and discharge automatically by gravity. Ultra-clean low-oil compressed air flows to activated carbon filters or high-standard precision production equipment.

Application & Industries

Serves as the core ultra-precision polishing filter in large-flow compressed air purification systems, installed between DD coarse filters and UD activated carbon filters.

Widely used in automotive manufacturing lines, precision electronic assembly, pharmaceutical production, food packaging, medical equipment, optical coating, laboratory analytical instruments, automotive topcoat spraying, heavy-duty laser cutting and large factory centralized high-flow compressed air supply systems requiring Class 1 ultra-clean compressed air.