Aftermarket FAUDI A.4-727 Coalescing Filter Cartridge | LEFILTER Replacement

LEFILTER aftermarket FAUDI A.4-727 coalescing filter offers OEM-equivalent performance for aviation fuel and hydrocarbon purification. Fully drop-in compatible, it features 10μm precision and stable pressure resistance for reliable industrial fluid filtration.

P/N:FAUDI A.4-727 TYPE:Industrial & Aviation Grade Coalescing Element

Aftermarket FAUDI A.4-727 Coalescing Filter Cartridge | LEFILTER Replacement

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Aftermarket FAUDI A.4-727 Coalescing Filter Cartridge | LEFILTER Replacement

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Oil Purification

Gas Filtration

Filter Element

Product Introduction

LEFILTER supplies high-compatibility aftermarket coalescing filter cartridge designed to fully replace the original FAUDI A.4-727. Specially engineered for aviation fuel handling and petrochemical hydrocarbon purification, this coalescer element follows strict EI 1581 industry standards and matches the original FAUDI dimensional tolerance, in-to-out flow structure and sealing performance perfectly. It serves as a reliable drop-in solution to solve the high pricing and long lead-time issues of genuine FAUDI filters, delivering stable solid-liquid-gas three-phase purification performance for industrial fluid systems.

The FAUDI A.4-727 is a mainstream high-stability coalescing filter widely used in fuel terminal tank farms, refinery fluid processing and low-viscosity oil purification. In daily operation, micro water droplets, oil mist and fine particulate contaminants easily cause fuel turbidity, pipeline blockage, instrument corrosion and liquid hammer failure. LEFILTER’s optimized A.4-727 replacement adopts upgraded gradient glass fiber media and pressure-resistant structural design, maintaining consistent filtration efficiency under frequent flow fluctuation and temperature variation, ensuring long-term stable operation of purification systems.

Unique Coalescing Filtration Mechanism

Different from conventional single-layer filter cartridges, the FAUDI A.4-727 coalescer adopts progressive layered interception and droplet polymerization technology. The outer open fiber layer undertakes pre-filtration to trap large sediment and scale, protecting the inner precision fiber layer from premature clogging.

When fluid flows inward through the hydrophilic glass fiber medium, invisible micro water droplets and oil aerosols are captured by the dense fiber network. With continuous fluid scouring, scattered tiny droplets collide, aggregate and grow into large-size droplets. Relying on gravity difference, the enlarged liquid droplets separate from the main fluid and settle in the filter housing sump, while clean fuel or process gas flows downstream to complete high-precision purification.

Core Structural & Material Strength

1. High-performance Gradient Fiber Media

Adopting high-hydrophilic borosilicate glass fiber with graded density structure, the media features excellent chemical inertness against aviation fuel, diesel, gasoline, turbine oil and various light hydrocarbon solvents. It achieves stable 10μm precision filtration and high-efficiency droplet coalescence, effectively improving dirt holding capacity and anti-blockage performance for long-cycle industrial operation.

2. NBR Sealing System & Standard Installation Structure

Equipped with original-standard NBR (Buna-N) rubber seals, the A.4-727 replacement filter provides reliable tight sealing under pressure cycling. The end cap structure and overall installation size are 100% compatible with original FAUDI filter vessels, supporting plug-and-play replacement without on-site modification.

3. Pressure-resistant Reinforced Support Frame

Built-in rigid perforated inner tube effectively prevents media shrinkage, deformation and collapse under high differential pressure. Full automatic hot-melt bonding process eliminates adhesive dissolution risks, avoiding secondary pollution and ensuring 24-hour continuous stable operation.

Industrial Application Scope

LEFILTER FAUDI A.4-727 coalescing replacement filter is widely applicable for tank farm fuel purification, aviation fuel depots, petrochemical light hydrocarbon processing and turbine oil filtration. It effectively removes free water, oil mist and fine solid impurities, protecting downstream compressors, precision meters and conveying pipelines from corrosion and liquid hammer damage, stabilizing finished fluid quality and system operating efficiency.

Product Advantages of LEFILTER A.4-727

All LEFILTER FAUDI A.4-727 coalescing filters undergo strict factory performance testing to ensure full interchangeability with original FAUDI products. Upgraded fiber formula provides stronger contaminant tolerance and longer service life than ordinary generic alternatives. With stable spot inventory and cost-effective pricing, our aftermarket elements help industrial users reduce procurement costs and shorten maintenance cycles while maintaining OEM-level filtration reliability.

FAQ for FAUDI A.4-727 Coalescing Filter

Q1: Is LEFILTER A.4-727 fully compatible with original FAUDI equipment?

A1: Yes. It strictly replicates original size, flow direction and NBR sealing structure. Direct drop-in replacement, no equipment adjustment or modification required.

Q2: What is the filtration precision of FAUDI A.4-727?

A2: This coalescer features 10μm nominal filtration precision, specially designed for high-flow fuel and hydrocarbon fluid purification scenarios.

Q3: What are the temperature and pressure working limits?

A3: Max differential pressure is 5.2 bar, and working temperature ranges from -30℃ to +80℃. Operating within standard parameters ensures long service life.

Q4: What kinds of media can A.4-727 filter process?

A4: It suits aviation fuel, diesel, gasoline, turbine oil, LPG, benzene, toluene and most low-viscosity light hydrocarbon industrial fluids.

Q5: When should I replace the A.4-727 filter element?

A5: Timely replacement is required when system differential pressure reaches 1.0 bar, to avoid fluid bypass and decreased purification efficiency.

Q6: Does this filter support long-term continuous operation?

A6: Yes. Reinforced support structure and integrated hot-melt sealing adapt 24-hour continuous industrial operation with stable structural performance.

Q7: Can you provide sample test and bulk order customization?

A7: We support free sample verification, batch customization and global fast delivery to meet different project and maintenance needs.