Coalescing Filters

Model: 250034-143

Product Type: Built-in Flange Air Oil Separator Cartridge for Rotary Screw Air Compressor

Core Technical Specifications

Filter Media: Imported multi-layer gradient HV/Lydall borosilicate micro glass fiber composite

Filtration Precision: 0.1 μm submicron lubricant oil mist aerosol

Separation Efficiency: ≥99.99%

Residual Oil Content in Outlet Air: ≤3 ppm

Physical Dimensions

Outer Diameter: 200 mm

Inner Diameter: 108 mm

Overall Height: 172 mm

Max Working Pressure: 1.3 MPa / 13 bar

Max Continuous Operating Temperature: ≤104℃ 

Initial Differential Pressure: ≤0.02 MPa

Service Life: 4000–8000 working hours or 12 months 

Mounting Structure: Round single-layer galvanized steel flange with integrated high-temperature nitrile rubber sealing gasket

Key Product Features

High-efficiency oil-gas coalescing separation

Gradient micro glass fiber fully captures ultra-fine submicron oil mist particles, aggregates tiny aerosol into large liquid oil droplets that flow back to the lubricating tank via built-in oil return tube. Effectively cuts compressor oil consumption and prevents oil carryover into downstream pipelines.

Low pressure drop energy-saving design

Optimized dense pleated structure expands effective filtration area, maintains stable low airflow resistance under long-term full-load continuous operation, and reduces air compressor power loss and operation cost.

Super-large oil & dirt holding capacity

Multi-layer deep-depth filter structure stores massive separated lubricant and pipeline contaminants, extends maintenance intervals and lowers filter replacement frequency.

Full stainless steel perforated inner support cage

Prevents filter layer collapse, deformation and damage under long-term high-temperature, high-flow industrial working conditions.

Working Principle

Oil-gas mixture discharged from compressor airend flows into the separator tank. Large oil droplets are separated by gravity at first; residual micro oil mist penetrates the glass fiber coalescing layer and is fully trapped, then condensed into liquid oil to flow back to the lubrication system. Clean low-oil compressed air flows out for post-processing purification.

Application & Industries

Widely applied in auto repair shops, machinery manufacturing, metal processing, packaging, textile, small spray booths, pneumatic tools and small factory centralized air supply systems.