Coalescing Filters

Part No: 2901200406

Core Technical Specifications

Absolute Filtration Accuracy: Solid particles & liquid oil/water aerosols ≥0.01 μm

Filter Media Structure: Multi-layer gradient borosilicate microglass composite, outer red hydrophobic & oleophobic drainage foam to prevent liquid re-entrainment, deep pleated optimized media for larger dirt holding capacity and lower initial pressure drop

Mounting Method: Central male thread bayonet quick twist lock, exclusive Atlas internal threaded locking mandrel

Overall Dimension: Length 336 mm, Outer Diameter 86 mm

Operating Limits

Max Working Pressure: 1.6 MPa (16 bar)

Continuous Operating Temperature: 1.5℃ ~ 80℃

Standard Replacement Cycle

4,000 working hours / 12 months under clean industrial air conditions; shorten to 2,000–3,000 hours in dusty, high-humidity spray workshops. Replace when differential pressure ΔP ≥ 0.07 MPa.

Differential Pressure Replacement Thresholds

Initial pressure drop of new element: ≤0.013 MPa

Mandatory replacement alarm threshold: ΔP ≥ 0.07 MPa

Sealing & Support Construction

End Caps: Reinforced black PA polymer threaded locking head with integrated flow diversion ribs

Seal System: Integral built-in NBR nitrile rubber full-circle gasket, zero air bypass, resistant to aging caused by compressor oil and acidic condensate

Inner & Outer Support Cage: Double-layer perforated 304 stainless steel mesh, structural reinforcement to avoid media collapse under full rated continuous airflow

Key Product Advantages

Third-stage upgraded ultra-fine polishing barrier to protect downstream QD activated carbon filter

Installed after DD medium coalescing filter, this PD+-grade upgraded element intercepts invisible trace submicron oil mist and micro water droplets that medium filters cannot separate. Optimized media structure reduces oil load on terminal carbon filters, extends carbon service life and cuts long-term spare parts costs.

High dirt and liquid holding capacity with lower permanent pressure loss

Thick deep-pleated gradient microglass matrix holds large volumes of oil and condensate. Outer red drainage foam accelerates liquid separation and gravity discharge, slowing pressure rise in humid workshop environments and reducing unplanned downtime caused by frequent filter replacements.

Heat-stabilized media, zero fiber shedding to avoid secondary pipeline contamination

Heat-cured borosilicate microglass composite paired with stainless steel support mesh prevents glass fiber powder from shedding into air pipelines, protecting micro spray nozzles, tiny laser optical lenses and miniature solenoid valves from clogging failures.

Energy-saving low differential pressure design to reduce compressor power consumption

Uniform gradient pore layout minimizes airflow resistance throughout the entire service cycle. Stable low backpressure lowers continuous power consumption of medium screw compressors, cutting long-term factory electricity expenses.

Working Principle

Pre-filtered compressed air flows through the filter cartridge from outside to inside:

Residual small water droplets and fine solid contaminants are trapped by the outer red hydrophobic foam and drain into the filter bowl via gravity.

0.01μm ultra-fine oil-water micro-aerosols collide and coalesce into large separable liquid droplets while passing through multi-layer gradient borosilicate microglass media.

The outer anti-re-entrainment foam prevents separated liquid droplets from being re-carried by high-speed compressed airflow.

Collected oil and condensate are discharged automatically via electronic float drain valve.

Ultra-dry air with residual liquid oil ≤0.008mg/m³ flows downstream to the QD activated carbon filter for final oil vapor purification.

Application Industries

Medium automotive electrostatic spray booths, medium heavy-duty laser cutting equipment, pharmaceutical mass aseptic filling production lines, central cleanroom air supply for electronics assembly, food & beverage sterile packaging factories, medical central medical gas supply, multi-station precision automation production lines requiring ISO 8573-1 Class 1 ultra-pure compressed air.