INDUSTRY COMPONENT

Coalescing Filter Element

Coalescing filter element for separating oil from compressed air in industrial systems

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Component Specifications

Definition
A specialized filtration component designed to remove oil aerosols and liquid oil droplets from compressed air streams through coalescence, typically used downstream of compressors in oil-lubricated systems. It consists of multiple layers of fine fibers that capture microscopic oil particles and coalesce them into larger droplets that drain by gravity.
Working Principle
Operates on the principle of coalescence where microscopic oil aerosols (0.01-1.0 μm) are captured by fine fiber media through diffusion, interception, and impaction mechanisms. The captured particles coalesce into larger droplets on the fiber surfaces, which then migrate through the media and drain by gravity when they reach sufficient size.
Materials
Multi-layer construction with borosilicate glass microfibers, synthetic polymer fibers (polypropylene, polyester), or stainless steel mesh. Outer protective layers typically made of polyester or polypropylene. End caps usually constructed from polycarbonate, aluminum, or stainless steel.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Service Life4000-8000 operating hours
Temperature Range-20°C to 80°C
Oil Removal CapacityUp to 500 g/m³
Filtration Efficiency99.99% at 0.01 μm
Initial Pressure Drop0.1-0.3 bar
Maximum Operating Pressure16 bar (232 psi)

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards
ISO 8573-1:2010, ISO 12500-1:2007, DIN 3188, DIN ISO 8573-4

Parent Products

This component is used in the following industrial products

Oil Separator

A component in vacuum pump systems that separates oil from the gas stream to maintain pump efficiency and prevent oil contamination.

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Air Filter/Dryer

A component that removes contaminants and moisture from compressed air in purge systems.

View Product Details

Oil-Water Separator

An oil-water separator is a component used in compressed air systems to remove oil aerosols, water vapor, and liquid contaminants from the compressed air flow.

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Engineering Analysis

Risks & Mitigation
  • Media collapse under high differential pressure
  • Oil carryover due to improper installation
  • Reduced efficiency from media contamination
  • Pressure drop increase over time
  • Incompatibility with certain lubricants
FMEA Triads
Trigger: Excessive oil loading beyond design capacity
Failure: Media saturation leading to oil carryover
Mitigation: Install pre-filters, monitor pressure differential, implement regular maintenance schedule
Trigger: Improper installation or orientation
Failure: Reduced drainage efficiency and premature clogging
Mitigation: Follow manufacturer installation guidelines, ensure proper vertical orientation, verify drainage connections
Trigger: Chemical incompatibility with lubricants
Failure: Media degradation and loss of filtration efficiency
Mitigation: Verify lubricant compatibility, use appropriate media materials, conduct compatibility testing

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
±5% filtration efficiency, ±0.05 bar pressure drop tolerance
Test Method
ISO 12500-1 for oil removal efficiency, ISO 8573-1 for air quality classes, gravimetric analysis for oil loading capacity

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation
Request current drawings, revision history, and a signed specification sheet.
Manufacturing capability
Verify equipment lists, process limits, capacity, and representative production evidence.
Inspection readiness
Confirm test methods, calibrated equipment, sampling plans, and traceable reports.
Supplier transparency
Check the legal entity, factory address, ownership, certifications, and direct contacts.

CNFX does not score or rank suppliers. Buyers must verify all claims and documents with the legal manufacturer before ordering.

Manufacturers of Coalescing Filter Element

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Filson Filter
Henan, CN
Also makes: Filtration System, Oil-Water Separator, Hydraulic Filter and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
View profile Send enquiry

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

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Frequently Asked Questions

What is the difference between coalescing filters and particulate filters?

Coalescing filters are specifically designed to remove liquid aerosols (oil, water) by coalescing them into larger droplets, while particulate filters remove solid particles. Coalescing filters typically have finer fiber structures and different media treatments.

How often should coalescing filter elements be replaced?

Replacement intervals depend on operating conditions, typically 4000-8000 hours or when pressure drop reaches 0.7-1.0 bar. Regular monitoring of pressure differential is recommended for optimal performance.

Can coalescing filters remove water vapor?

Coalescing filters primarily remove liquid aerosols and droplets. For water vapor removal, a desiccant dryer or refrigerated dryer should be used downstream of the coalescing filter.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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