Coalescing Filters

Model: 2901207209

Core Technical Specifications

Filtration Grade: UD Ultra High-Efficiency Coalescing Grade

Filtration Precision: Captures ≥0.003μm micro liquid oil mist, condensed water aerosol and ultra-fine solid particles

Outlet Residual Oil Content: ≤0.003 ppm

Filtration Efficiency: 99.999% removal efficiency for 0.003μm liquid aerosols

Filter Media: Multi-layer gradient hydrophobic borosilicate microglass fiber composite with outer hydrophobic foam buffer sleeve, anti-static & oleophobic treatment

Continuous Operating Temperature: 1.5℃ ~ 66℃

Standard Service Life: Replace after 4,000 operating hours or 12 months, whichever comes first

Replacement Trigger: Warning alert when differential pressure ＞0.045 MPa; mandatory shutdown replacement when differential pressure ≥0.07 MPa

Initial Differential Pressure: ≤0.016 MPa

Sealing Structure: Integrated plastic end caps with double fluorine rubber O-rings, zero air bypass leakage

Key Product Advantages

Ultra-fine coalescing for laboratory & high-end manufacturing ultra-pure air

This UD grade can trap invisible ultra-submicron oil mist that standard DD filters cannot intercept. Aggregated liquid droplets drain fully to filter bowl, delivering ultra-low residual oil compressed air for strict cleanliness production processes.

Optimized pleated media for low energy loss

Large deep-pleated filtration area smooths internal airflow channels, maintains stable low pressure drop under 24/7 full-load continuous operation, effectively reducing long-term air compressor power consumption.

Super large liquid holding capacity extends maintenance interval

Thick multi-gradient hydrophobic glass fiber matrix stores massive condensed oil and water, resisting rapid saturation in high-humidity workshop environments and lowering replacement frequency.

Oil & hydrolysis resistant reinforced construction

Hydrolysis-proof, oil-repellent glass fiber matched with stainless steel mesh avoids fiber shedding, preventing secondary contamination of downstream precision instruments and pneumatic components.

Working Principle

Pre-cleaned compressed air from PD particulate filter flows outside-in through multi-layer hydrophobic microglass fiber media. Tiny oil & water aerosols collide and agglomerate into large liquid droplets, then flow down fiber surface to the filter bottom drain port by gravity. Ultra-dry, ultra-low-oil compressed air flows to subsequent activated carbon filter for terminal odor removal.

Application Industries

widely applied in:

Automotive high-gloss electrostatic painting, laser cutting equipment, pharmaceutical sterile cleanrooms, food aseptic packaging, electronic chip & semiconductor assembly, laboratory precision analytical instruments, inkjet printing, centralized high-purity gas stations.