Replacement FAUDI A.3-842 Coalescing Filter Element | LEFILTER

LEFILTER provides fully drop-in replacement coalescing filter element for FAUDI A.3-842. Designed for aviation fuel purification and industrial hydrocarbon separation, this aftermarket coalescer strictly replicates the original FAUDI structural size, sealing interface and flow performance. Manufactured with multi-layer gradient glass fiber media, it efficiently removes fine solid particles, free water and oil mist from various low-viscosity fuels and process fluids. With stable separation efficiency and excellent dirt holding capacity, our A.3-842 replacement filter offers a cost-effective alternative to expensive original FAUDI elements, requiring no vessel modification for quick on-site replacement.

FAUDI A.3-842 is a widely used coalescing cartridge in aviation fuel depots, refineries and chemical fluid processing systems. It is specially optimized for in-to-out flow filtration to achieve reliable liquid-liquid and gas-liquid separation. In actual industrial operation, long OEM lead times and high procurement costs often affect daily maintenance schedules. LEFILTER’s optimized A.3-842 filter solves these pain points through standardized reverse engineering and upgraded media formula, delivering consistent filtration stability under variable flow and temperature conditions.

Filtration & Coalescence Principle

The FAUDI A.3-842 coalescing filter adopts progressive gradient filtration technology to complete two-stage purification. The outer coarse fiber layer intercepts large particles, sediment and scale to protect the inner precision layer and avoid early clogging. The inner high-hydrophilic glass fiber layer captures micron-sized water droplets and oil aerosols that cannot be removed by ordinary filters.

When contaminated fluid passes through the dense fiber network, suspended micro-droplets adhere to the fiber surface. Under fluid shear force and intermolecular tension, tiny droplets collide and polymerize into large-diameter droplets. These enlarged droplets separate from the fluid under gravity and settle into the filter sump, while clean medium flows steadily downstream. This stable coalescing mechanism ensures long-term high-efficiency purification without flow channeling or performance attenuation.

Product Structure & Material Advantages

1. Upgraded Gradient Glass Fiber Media

Adopting high-purity hydrophilic borosilicate glass fiber with graded density layout, the media features excellent chemical inertness. It is compatible with aviation kerosene, diesel, gasoline, turbine oil and various light hydrocarbon solvents. It stably captures 3μm fine impurities with coalescing efficiency up to 99.6%, ensuring long-cycle stable filtration.

2. High-Strength Integrated End Cap & Standard Sealing

The end cap adopts high-strength corrosion-resistant polymer material, fully matching the original FAUDI A.3-842 installation size and sealing standard. Built-in durable NBR gasket provides zero-leakage sealing under fluctuating pressure, effectively preventing fluid bypass and filtration failure.

3. Collapse-Resistant Reinforced Support

Internal rigid perforated support tube enhances overall structural stability, preventing media deformation and collapse under long-term operating pressure. Full hot-melt sealing process eliminates adhesive pollution, adapting to 24-hour continuous industrial operation.

Main Application Fields

LEFILTER FAUDI A.3-842 replacement coalescer is widely used in multi-industry fluid purification. It is ideal for aviation fuel handling stations to guarantee fuel cleanliness and avoid pipeline icing and equipment corrosion. In petrochemical plants, it purifies light hydrocarbon products and organic solvents to improve finished product quality. It also serves for turbine oil filtration and industrial gas dehydration, protecting downstream compressors, precision instruments and delivery pipelines from liquid hammer and abrasion.

Why Choose LEFILTER FAUDI A.3-842 Replacement

All LEFILTER A.3-842 filters are strictly tested by bubble point and pressure resistance inspection before delivery, achieving 100% dimensional and performance interchangeability with original FAUDI products. Compared with generic substitutes, our upgraded fiber material provides higher dirt holding capacity and longer service life, effectively reducing replacement frequency and system downtime. We maintain sufficient stock and fast global delivery, providing professional technical guidance and after-sales support for all industrial users.

FAQ | FAUDI A.3-842 Coalescing Filter

Q1: Is LEFILTER A.3-842 fully interchangeable with original FAUDI filter?

A1: Yes. Our A.3-842 coalescing filter is completely consistent with the original size, installation interface and sealing standard. It supports direct drop-in replacement without any equipment modification.

Q2: What media can FAUDI A.3-842 filter handle?

A2: It applies to aviation kerosene, diesel, gasoline, turbine oil, light hydrocarbons and common organic solvents, removing free water, oil mist and fine solid particles efficiently.

Q3: What is the service life of A.3-842 replacement element?

A3: Under standard working conditions, the service cycle is 3–9 months. Replace timely when system differential pressure reaches 0.15MPa to ensure stable filtration performance.

Q4: What is the filtration precision of FAUDI A.3-842?

A4: It features 3μm filtration precision with ≥99.6% micro water droplet coalescing efficiency, meeting aviation and industrial purification standards.

Q5: What are the operating temperature and pressure limits?

A5: Max working pressure is 1.5MPa, and working temperature ranges from -40℃ to +80℃. Exceeding the limits will accelerate media aging.

Q6: Does this element support continuous 24-hour operation?

A6: Yes. Reinforced support structure and integral hot-melt sealing enable stable long-term continuous operation for industrial systems.

Q7: Do you provide customized service and sample testing?

A7: We support free sample testing and bulk customization including logo marking and special packaging to meet different project demands.

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