Coalescing Filters

Core Technical Specifications

Filtration Grade: Primary submicron high-efficiency coalescing separation for large-flow industrial screw compressors

Absolute Separation Precision: 0.1 μm micro oil mist aerosols

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

Max Continuous Working Pressure: 1.0 MPa

Continuous Operating Temperature Range: -10°C ~ +110°C

Clean low-dust factory workshop: 4,000–6,000 operating hours or 12 months

Heavy dust, high ambient temperature, 24/7 continuous full-load production: Shorten service life to 3,000–4,500 hours

Mandatory Replacement Trigger: Differential pressure ΔP ≥ 0.08 MPa or visible oil carryover in downstream large-diameter air pipelines

Alarm replacement differential pressure: ΔP ≥ 0.08 MPa

Outer perforated galvanized steel mesh jacket: Anti-rust, resists long-term erosion of high-temperature oil vapor & acidic condensate inside oil tank

Thickened perforated central support tube: Anti-collapse deformation under large-volume high-speed airflow surges

Integrated flat steel flange + full-face heat-resistant fiber sealing cushion, zero air/oil bypass leakage

Central built-in micro oil return drain pipe: Collects coalesced liquid oil and refluxes back to tank oil sump to avoid secondary liquid re-entrainment by turbulent high-speed airflow

Key Product Advantages

It limits outlet air residual oil below 3 ppm, fully protects downstream refrigerated dryers, adsorption dryers and inline precision coalescing filters from heavy oil contamination and premature failure.

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

Extra wide pleated filtration area stores massive oil sludge, carbon deposits and liquid contaminants; differential pressure climbs gently throughout 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 dedicated central drain tube directly back to tank bottom oil sump, preventing separated oil from being blown back into clean air stream by large-volume turbulent airflow, sustaining stable low oil carryover performance for full service life.

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

All metal support frames adopt galvanized anti-rust coating, resisting long-term erosion of high-temperature oil vapor and acidic condensate inside oil tank; built-in static conductive structure eliminates hidden static accumulation fire hazard inside the separator element.

Working Principle

High-temperature large-flow oil-air mixed gas discharged from screw rotors enters outer cavity of separator element. Large oil droplets collide with outer steel perforated jacket and drop into oil tank by 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 central built-in oil return tube, and refluxes back to oil sump for circulation reuse.

Clean low-oil compressed air (residual oil ≤3 ppm) passes through inner core support tube and flows out of 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 failure.

Application Scope

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