Coalescing Filters

Part No: LE66004X

Core Technical Specifications

Absolute Separation Precision: 0.1 μm micro oil mist aerosols

Oil Mist Capture Efficiency: 99.999% interception rate for oil particles ≥0.1 μm

Outlet Compressed Air Residual Oil Content: ≤3 ppm, fully complies with ISO 8573-1 Class 3 industrial clean air standard

Filter Media: Imported German multi-layer HV gradient borosilicate glass fiber composite media, anti-hydrolysis, continuous high temperature resistant up to 115°C

Max Continuous Working Pressure: 1.0 MPa

Continuous Operating Temperature Range: -10°C ~ 115°C

Compatible Lubricant: Mineral & fully synthetic screw compressor coolant oil

Clean low-dust factory environment: 4,000–6,000 operating hours / 12 months

Heavy dust, high ambient temperature, 24/7 continuous heavy-load production: Shorten service life to 3,000–4,000 hours

Mandatory replacement trigger: Differential pressure ΔP ≥ 0.08 MPa or visible oil carryover in downstream air pipeline

Initial pressure drop of brand-new separator: ≤0.02 MPa

Alarm replacement differential pressure: ΔP ≥ 0.08 MPa

Outer Support Jacket: Perforated galvanized steel mesh, anti-rust coating to resist long-term erosion of high-temperature oil vapor and acidic condensate inside the oil tank

Inner Central Support Tube: Thickened perforated steel core, anti-collapse deformation under sudden large airflow pressure surges

Mounting Flange & Gasket: Integrated stamped steel flat flange, heat-resistant fiber composite full-face sealing cushion, zero air/oil bypass leakage

Key Product Advantages

Core primary separation component for large-flow compressors to control residual oil content of compressed air

Installed at the gas outlet of the large compressor oil receiver tank, this element captures massive micro oil aerosols generated after rotor compression under high flow volume. It limits outlet air residual oil below 3 ppm, fully protecting downstream refrigerated dryers, desiccant dryers and inline precision coalescing filters from heavy oil contamination and premature failure.

Oversized multi-layer gradient glass fiber media with ultra-large contaminant holding capacity & stable low pressure loss

Extra-large pleat surface area multi-gradient HV glass fiber composite media provides massive oil sludge storage capacity, slowing differential pressure rise throughout the full service cycle even under continuous heavy oil load. Layered coalescing structure aggregates micro oil droplets into continuous liquid film for gravity reflux, maintaining consistent ultra-high separation efficiency without performance decay.

Integrated central oil return pipeline eliminates secondary oil carryover risk

Coalesced liquid oil flows down the dedicated central drain tube directly back to the tank bottom oil sump, preventing separated oil from being blown back into clean air stream by high-speed large-volume turbulent airflow, sustaining stable low oil carryover performance for the entire service life.

Full galvanized anti-corrosion & anti-static metal framework adapts to harsh humid high-temperature tank environment

All metal supporting frames adopt galvanized anti-rust treatment, resisting long-term erosion of high-temperature oil vapor and acidic condensate inside the oil tank; built-in static conductive structure eliminates static accumulation hidden fire hazard inside the filter element for large-flow high-speed air circulation.

Air-Oil Separation Working Principle

High-temperature high-flow oil-air mixed gas discharged from large screw rotors enters the outer cavity of the separator element. Large oil droplets collide with outer steel perforated jacket and drop into the oil tank via gravity for primary coarse separation.

Fine submicron oil mist aerosols penetrate multi-layer gradient glass fiber media; tiny oil particles collide, aggregate and coalesce into continuous liquid oil films on fiber surfaces.

Coalesced liquid oil flows downward along media layers, converges into the central built-in oil return tube, and refluxes back to the oil sump for circulation reuse.

Clean low-oil compressed air (residual oil ≤3 ppm) passes through the inner core support tube and flows out of the oil tank to downstream air treatment equipment and production terminals.

When media is fully saturated with carbon sludge and oil deposits, differential pressure rises sharply; excessive pressure difference may crack glass fiber media and cause massive oil carryover fault.

Application Scope

Automotive large component electrostatic painting workshops, shipbuilding metal cutting & welding factories, large plastic injection molding production lines, large food & beverage sterile packaging pneumatic systems, textile mill central compressed air supply, medium-large pharmaceutical aseptic production gas supply, general heavy machinery processing pneumatic tool stations.