Coalescing Filters

Part No: 2258290020

Core Technical Specifications

Filtration Grade: DD General Purpose Medium Coalescing Grade

Absolute Filtration Accuracy: Solid particles & liquid oil/water aerosols ≥1 μm

Filter Media Structure

Multi-layer gradient borosilicate microglass composite, outer blue hydrophobic & oleophobic PU drainage foam, extra deep pleated structure for ultra-large dirt holding capacity, built-in anti-re-entrainment backflow barrier.

New element initial pressure drop: ≤0.012 MPa

Mandatory replacement alarm point: ΔP ≥ 0.06 MPa

Seal System: Integral full-circle NBR nitrile rubber flange gasket, zero air bypass, resistant to high-temperature compressor oil and acidic condensate aging

Inner & Outer Support Cage: Double-layer thick perforated 304 stainless steel mesh, heavy-duty anti-collapse reinforcement for large-volume high-speed airflow

Key Product Advantages

Second-stage large-flow medium polishing protection for downstream PD & QD precision filters

Installed after primary pre-filter, this large DD element intercepts massive pipeline rust, bulk condensed water and 1μm large oil mist under factory central heavy air flow. It greatly reduces oil-water impurity load on ultrafine and carbon filters, extends their service life and lowers overall factory spare parts cost.

Ultra-large dirt & liquid holding capacity for heavy-duty continuous production

Extra thick deep-pleated microglass matrix stores massive oil and condensate. Outer blue drainage foam accelerates liquid gravity backflow, slows pressure rise under long-hour full-load operation, reduces costly full-line shutdown caused by frequent filter replacement.

High-temperature stabilized media, no fiber powder pipeline pollution

Heat-cured borosilicate microglass + double heavy stainless steel support mesh prevents glass fiber shedding into large-diameter central air pipes, protecting heavy spray booth manifolds, large-format laser cutting lenses and main process proportional valves from severe blockage failure.

Low permanent differential pressure reduces large compressor power consumption

Uniform wide-gradient pore layout maintains low airflow resistance under maximum rated flow throughout service life. Stable low backpressure lowers running load of large screw/centrifugal compressors, cutting long-term factory electricity expenditure significantly.

Working Principle

High-volume compressed air flows through cartridge outside-in:

Large water droplets and solid impurities are trapped by outer blue hydrophobic foam and drain to large filter bowl by gravity.

1μm oil-water micro-aerosols collide and coalesce into large liquid droplets inside gradient microglass media.

Anti-re-entrainment foam avoids separated oil being re-carried by high-speed large airflow.

Collected oil and water auto-drain via large electronic float drain valve.

Medium-clean air flows downstream to PD ultrafine filter for secondary high-precision purification.

Application Industries

Full automotive plant electrostatic spray lines, heavy industrial large laser cutting production lines, pharmaceutical factory central aseptic air supply, large electronics cleanroom main air source, food & beverage giant sterile packaging plants, multi-station heavy automation production lines, large plastic injection molding factory centralized air station.