Fine Demulsification FAUDI K.4-279 Coalescing Filter | Low-Emulsion Fuel Filtration Solution
LEFILTER FAUDI K.4-279 fine demulsification coalescing filter features exclusive micro-emulsion removal design, compliant with EI 1581 aviation standards. It provides high-precision fuel purification for mobile refueling and high-standard industrial fuel systems.
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Product Introduction
LEFILTER's aftermarket FAUDI K.4-279 coalescing filter delivers professional fine demulsification and precision impurity removal for aviation and industrial fuel treatment systems. Engineered to comply with strict EI 1581 aviation filtration criteria, this K-type element stands out for its exceptional micro-emulsion breaking capability, tailored for fuel media with stable tiny water droplets that conventional filters struggle to separate. As a fully interchangeable replacement for the original FAUDI K.4-279 cartridge, it features identical installation dimensions, in-to-out flow configuration and reliable NBR sealing performance, enabling hassle-free plug-and-play installation without any system modification or operational downtime.
Different from conventional high-flow coalescing models, the FAUDI K.4-279 is optimized for low-emulsion, high-precision purification scenarios. It targets ultra-fine suspended particles and tightly bound emulsified water in jet fuel, diesel and light hydrocarbon fluids, which are the primary causes of fuel opacity, injector clogging and premature wear of downstream precision fluid equipment. Adopting custom composite gradient hydrophilic media, our upgraded K.4-279 filter achieves balanced filtration efficiency and dirt holding capacity, maintaining stable demulsification performance under long-term variable-flow operation and mild temperature fluctuations. It serves as a core consumable for high-standard fuel quality control in mobile refueling and fixed purification systems.
Unique Demulsification & Filtration Mechanism
The K.4-279 coalescing element adopts a three-stage composite filtration structure exclusive to FAUDI K-series fine-grade filters, realizing layered purification from large impurities to micro-emulsified water. The outer composite fiber protective layer intercepts rust, scale and macroscopic sediment, preventing surface blockage and ensuring uniform fluid inflow across the entire filter media.
The middle gradient transition layer disperses fluid flow velocity to avoid local flow concentration, creating stable conditions for micro-droplet polymerization. The inner high-hydrophilic glass fiber core layer captures invisible micron-level emulsified water molecules. Through continuous fluid scouring and molecular interfacial tension changes, scattered tiny water droplets collide, merge and grow into large-gauge water beads. These separated water droplets settle rapidly via gravity, while fully purified hydrocarbon fluid flows downstream, completing high-efficiency low-emulsion purification.
Customized Structural & Material Advantages
1. Special Composite Hydrophilic Demulsification Media
Unlike single-layer glass fiber materials, K.4-279 adopts multi-composite graded fiber media with enhanced hydrophilic modification. It features excellent chemical inertness against various light hydrocarbon media, outstanding micro-emulsion breaking ability and stable particle interception performance. No fiber shedding, media deformation or efficiency attenuation occurs during long-cycle operation.
2. Anti-Aging Reinforced End Cap & Full Sealing Configuration
High-strength glass-filled polyamide end caps improve structural toughness and low-temperature adaptability, suitable for complex outdoor and mobile working conditions. Matched with original-equipment-grade NBR sealing gaskets, the filter achieves complete leak-proof sealing under cyclic pressure changes, perfectly fitting standard FAUDI filter housings.
3. Pressure-Resistant Support Frame & Integrated Hot-Melt Sealing
Equipped with epoxy-coated steel internal support tube, the filter effectively resists radial pressure impact and media collapse under differential pressure. Full automatic hot-melt integral bonding process eliminates gaps and adhesive aging risks, ensuring structural integrity and stable filtration output during 24-hour continuous operation.
Full Spectrum of Compatible FAUDI Filter Models
A Series: A.1-559、A.1-842、A.3-842、A.4-727、A.4-842、A.6-467、A.6-842
Y Series: Y.1-842/5、Y.4-467/5、Y.4-559/5、Y.4-842/5、Y.6-362/5、Y.6-559/5、Y.6-842/5、Y.7-362/5、Y.7-842/5、Y.7-1422/5
MIL Series: MIL.6-362、MIL.6-559、MIL.6-842、MIL.1-842、MIL.3-467、MIL.3-559、MIL.3-842、MIL.3-965、MIL.4-279、MIL.4-362、MIL.4-559、MIL.4-727、MIL.4-842、MIL.4-965、MIL.4-1093、MIL.4-1422、MIL.7-362、MIL.7-559、MIL.7-727、MIL.7-842、MIL.7-965、MIL.7-1093、MIL.7-1422
K Series: K.1-842、K.3-467、K.3-559、K.3-842、K.3-965、K.4-279、K.4-362、K.4-559、K.4-727、K.4-842、K.4-965、K.4-1093、K.4-1422、K.7-362、K.7-559、K.7-727、K.7-842、K.7-965、K.7-1093、K.7-1422
P Series: P.1-842、P.3-467、P.3-559、P.3-842、P.3-965、P.4-279、P.4-362、P.4-559、P.4-727、P.4-842、P.4-965、P.4-1093、P.4-1422、P.7-362、P.7-559、P.7-727、P.7-842、P.7-965、P.7-1093、P.7-1422
D & DC Series: D.1-362、D.1-842、D.6-467、DC.1-842-xx、DC.4-279-xx、DC.4-362-xx、DC.4-559-xx、DC.4-727-xx、DC.4-842-xx、DC.4-1093-xx、DC.4-1422-xx、DC.7-362-xx、DC.7-559-xx、DC.7-727-xx、DC.7-842-xx、DC.7-1093-xx、DC.7-1422-xx
Core Application Scenarios
Tailored for fine fuel purification requirements, the LEFILTER FAUDI K.4-279 coalescing filter is widely deployed in precision mobile refueling equipment, aviation hydrant dispensing systems, high-standard petrochemical fuel finishing lines and laboratory-grade hydrocarbon purification units. It effectively solves the problem of difficult separation of trace emulsified water in fuel, stabilizes finished fuel cleanliness, and protects downstream precision valves, flow meters and fuel injection systems from micro-particle abrasion and water-induced corrosion.
Product Core Competitiveness
Every FAUDI K.4-279 filter element undergoes strict bubble point detection and differential pressure resistance testing before delivery to ensure fully consistent performance and interchangeability with original parts. The customized composite demulsification media delivers superior trace water removal efficiency compared with ordinary generic filters, effectively reducing fuel emulsification risks and extending service life of downstream equipment. We support full-series FAUDI filter one-stop supply, sufficient spot inventory and customized bulk delivery solutions for global industrial and aviation projects.
Professional FAQ
Q1: What is the core advantage of FAUDI K.4-279 compared with other K-series filters?
A1: K.4-279 features exclusive fine demulsification design, specially optimized for removing trace emulsified water that is hard to separate by conventional filters, ideal for high-precision fuel purification scenarios.
Q2: Is this replacement element fully compatible with original FAUDI systems?
A2: Yes. It matches the original in-to-out flow path, installation size and sealing interface completely, requiring no modification for direct replacement.
Q3: What working environments is K.4-279 suitable for?
A3: It adapts to -30℃ to +80℃ working temperature and 5.2 bar maximum differential pressure, perfect for mobile refueling and precision fixed fuel purification systems.
Q4: What pollutants can this filter effectively remove?
A4: It efficiently eliminates fine solid suspended particles, trace free water and stable emulsified water mist in aviation and industrial fuel media.
Q5: Can it operate stably for a long time?
A5: Yes. The reinforced pressure-resistant structure and integrated hot-melt sealing design prevent deformation and leakage, supporting 24-hour stable continuous operation.
Q6: Are full FAUDI series filter replacements available?
A6: We supply complete A/Y/MIL/K/P/D/DC series FAUDI coalescing filters, covering all mainstream models for one-stop procurement.
Q7: Do you support sample testing and customized services?
A7: Free sample verification is available. We also provide customized logo, packaging and bulk order solutions for global clients.
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Product Technical Parameters
Technical Parameter Overview
- Matching Model: FAUDI K.4-279
- Product Type: K-series fine demulsification aviation coalescing filter
- Implementation Standard: EI 1581 Aviation Filtration Specification
- Fluid Flow Direction: In-to-out
- Adaptable Temperature Range: -30℃ ~ +80℃
- Maximum Tolerable Differential Pressure: 5.2 bar
- Standard Replacement Differential Pressure: 1.0 bar
- Sealing Material: NBR (Buna-N)
- Support Structure: Epoxy-coated anti-corrosion steel frame
- Applicable Media: Aviation jet fuel, diesel, gasoline, various light hydrocarbon fluids
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