INDUSTRY COMPONENT

Air Filter

Industrial air filter for pneumatic systems that removes contaminants from compressed air to protect equipment and ensure operational efficiency.

Component Specifications

Definition
An air filter is a critical component in pneumatic systems designed to remove particulate matter, moisture, oil aerosols, and other contaminants from compressed air. It typically consists of a housing, filter element, and drainage mechanism, ensuring clean air supply to pneumatic tools, cylinders, valves, and other downstream equipment. Proper filtration extends equipment lifespan, reduces maintenance costs, and prevents system failures caused by contamination.
Working Principle
Air filters operate through mechanical filtration and coalescence. Contaminated air enters the filter housing and passes through a porous filter medium (often made of sintered metal, cellulose, or synthetic fibers). Larger particles are trapped via sieving, while finer aerosols coalesce into larger droplets that drain away. Some filters include moisture separators that use centrifugal force or baffles to remove liquid contaminants. Automatic or manual drains expel accumulated liquids.
Materials
Housing: Aluminum alloy, stainless steel (e.g., AISI 304/316), or engineered plastics (e.g., polycarbonate). Filter Element: Sintered bronze, cellulose fibers, polyester, or PTFE membranes. Seals: Nitrile rubber (NBR), ethylene propylene diene monomer (EPDM), or fluorocarbon (FKM). Drain Valve: Brass or stainless steel with elastomer seals.
Technical Parameters
ParameterTypical rangeNotes & selection driver
Flow Capacity100 L/min to 10,000 L/min (Cv value: 0.5 to 15)
Connection Size1/8" NPT to 2" NPT, G1/8 to G2
Filtration Rating5 μm, 1 μm, 0.01 μm (varies by grade)
Temperature Range-20°C to 80°C (-4°F to 176°F)
Filter Element Life6-12 months (depends on contaminant load)
Maximum Operating Pressure10 bar (145 psi) to 16 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 ISO 8573-1, DIN 24376

Parent Products

This component is used in the following industrial products

Engineering Analysis

Risks & Mitigation
  • Filter clogging leading to pressure drop
  • Inadequate filtration causing equipment damage
  • Material incompatibility with compressed air additives
  • Improper installation causing leaks
FMEA Triads
Trigger: Filter element clogged with contaminants
Failure: Reduced airflow, increased pressure drop, system inefficiency
Mitigation: Regular maintenance, install differential pressure indicators, use pre-filters for heavy contamination
Trigger: Seal degradation due to incompatible fluids or temperature
Failure: Air leaks, loss of filtration efficiency
Mitigation: Use appropriate seal materials (e.g., FKM for synthetic oils), monitor operating conditions
Trigger: Incorrect filtration grade selected
Failure: Contaminants bypass filter, damaging downstream equipment
Mitigation: Select filter based on ISO 8573-1 purity classes, analyze contaminant types

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance
Filtration efficiency ≥99.9% for specified particle size per ISO 12500-1, pressure drop ≤0.1 bar at rated flow
Test Method
ISO 8573-1 for air purity classes, ISO 12500-1 for filter performance testing, pressure decay test for leak detection

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 Air Filter

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

Zhejiang FONHO Automotive Co., Ltd.
Taizhou, Zhejiang, CN
Founded 2009200+ staff17,000 m²
IATF 16949:2016
Also makes: Air Dryer, Fuel Filter, Hydraulic Filter and 4 more
Managed by the manufacturer
Listed on the company's own website
Denair Energy Saving Technology (Shanghai) PLC
Shanghai, Shanghai, CN
over 500 staff
Also makes: Air Compressor, Air Receiver Tank, Storage Tank and 3 more
Listed on the company's own website · profile compiled by CNFX from public sources
FILONG (China) Automotive Group Limited
Ningbo, Zhejiang, CN
Founded 1998
Also makes: Air Filter, Fuel Filter, Hydraulic Filter and 1 more
Listed on the company's own website · profile compiled by CNFX from public sources
HENGKO
Shenzhen, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Jiangxi Ruiqian Auto Parts Co., Ltd.
Shangrao, Jiangxi, CN
Founded 1988300+ staff10,000+ Square Meters
ISO-TS16949:2009 ISO9001:2008 IATF 16964:2016
Also makes: Fuel Filter, Air Filter, Integrated Filter and 6 more
Listed on the company's own website · profile compiled by CNFX from public sources
Shandong Huaquan Power Co., Ltd.
Weifang, Shandong, CN
42,000 m²
ISO CE
Also makes: Water Pump, Diesel Engine, High-Pressure Pump and 9 more
Listed on the company's own website · profile compiled by CNFX from public sources
Skysorter
Anhui, CN
CE
Also makes: Air Compressor, Filter Assembly, Solenoid Valve and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources
Weixian Huachang Auto Parts Manufacturing Co., Ltd.
Wei County, Hebei, CN
Founded 2008more than 120 employees staff20,000 square meters
GB/T19001-2022 ISO9001:2022 ISO/TS16949:2022
Also makes: Air Filter, Fuel Filter
Listed on the company's own website · profile compiled by CNFX from public sources
Zhejiang Universe Filter Co., Ltd.
Wenzhou, Zhejiang, CN
Founded 19931000 staff80,000 square meters
ISO9001 QS9000 VDA6.1 ISO/TS16949
Listed on the company's own website · profile compiled by CNFX from public sources
CY Spraying and Purification
Dongguan, Guangdong, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Deiiang
Henan, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Eawayfilter
Hunan, CN
Also makes: Fan Filter Unit (FFU), Filter Unit, HEPA Filter and 2 more
Listed on the company's own website · profile compiled by CNFX from public sources

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

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Frequently Asked Questions

How often should I replace the filter element in a pneumatic air filter?

Replace the filter element every 6-12 months, or when the pressure drop across the filter exceeds 0.5 bar (7 psi). Monitor differential pressure gauges and inspect for visible contamination.

What is the difference between a particulate filter and a coalescing filter?

Particulate filters remove solid particles (e.g., dust, rust) down to 1-5 μm. Coalescing filters remove liquid aerosols (oil, water) and fine particles down to 0.01 μm by merging droplets into larger ones that drain away.

Can I use the same air filter for different pneumatic systems?

Yes, if specifications match (pressure rating, flow capacity, filtration grade). Ensure compatibility with system pressure, temperature, and contaminant type. Always follow manufacturer guidelines.

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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