Coalescing Filters

Part No: 02250153-301

Core Technical Specifications

Filter Media Structure: Multi-layer gradient borosilicate microglass composite, outer white hydrophobic & oleophobic drainage foam to eliminate liquid re-entrainment, deep pleated design for high dirt holding capacity

Flow & Dimension Parameters

Compatible Vessel: Sullair SCH65 threaded inline filter housing

Overall Dimension: Height 136 mm, Outer Diameter 42 mm

Mounting Method: Central bayonet plug-in quick twist lock, exclusive Sullair internal locking mandrel

Operating Limits

Max Working Pressure: 1.6 MPa

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: ≤0.014 MPa

Mandatory replacement alarm threshold: ΔP ≥ 0.07 MPa

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

Key Product Advantages

Third-stage ultra-fine polishing barrier to protect downstream GR5 activated carbon filter and miniature precision equipment

Installed after GR3 medium-fine coalescing filter, this GR4-grade element intercepts invisible trace submicron oil mist and micro water droplets that medium filters cannot separate. It drastically reduces liquid contamination load on terminal activated carbon filter elements, extends carbon service life and cuts spare parts costs.

Compact high dirt and liquid holding capacity for stable continuous operation

Thick deep-pleated microglass matrix holds large volumes of oil and condensate. The outer white drainage foam accelerates liquid separation and gravity discharge, slowing pressure rise in medium-size workshop air loops 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.

Optimized low permanent differential pressure 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 small & 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 white 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 ≤0.01mg/m³ flows downstream to the GR5 activated carbon filter for final oil vapor purification.

Application Industries

Small & medium automotive spray booths, mini laser marking & cutting equipment, laboratory analytical instrument air source, cosmetic micro-filling production lines, medical & dental small gas supply, miniature automation test benches, small food aseptic packaging equipment, precision electronic component assembly workstations.