High Reliability FAUDI Y.4-467/5 Coalescing Filter Replacement | LEFILTER

LEFILTER offers high-reliability aftermarket coalescing filter element designed to fully replace the FAUDI Y.4-467/5. Manufactured to meet strict EI 1581 aviation filtration standards, this coalescer is engineered for efficient water-oil separation and fine particle removal in low-viscosity hydrocarbon fluids. Every dimension, sealing interface and flow characteristic is precisely matched to the original FAUDI standard, enabling direct drop-in installation without housing modification. It serves as a cost-effective, high-stability alternative to genuine FAUDI filters for industrial and aviation fuel purification systems.

In fuel processing and fluid handling systems, micro water mist, emulsified droplets and tiny solid contaminants are the main causes of fluid quality decline, pipeline corrosion and downstream equipment failure. The FAUDI Y.4-467/5 is a high-performance coalescing element widely used in medium-flow fuel separation scenarios. LEFILTER’s upgraded Y.4-467/5 replacement adopts optimized gradient fiber layout and anti-aging structural design, maintaining stable coalescing efficiency under frequent temperature changes and pressure fluctuations, ensuring long-term safe operation of filtration systems.

Filtration & Coalescence Working Principle

The FAUDI Y.4-467/5 coalescing filter adopts progressive gradient two-stage purification logic. The outer coarse fiber layer performs pre-filtration to intercept large dirt and sediments, protecting the inner precision media from premature clogging and ensuring uniform fluid distribution.

During operation, fine water droplets and oil aerosols are captured by the high-hydrophilic inner glass fiber layer. Under continuous fluid shear force, countless micro-droplets collide, aggregate and grow into large-size liquid droplets. Due to gravity, the enlarged droplets separate from the fluid phase and settle into the filter sump, while clean fuel flows steadily downstream. This stable coalescing mechanism avoids fluid channeling and guarantees consistent purification effect throughout the filter service life.

Product Structure & Performance Advantages

1. Upgraded Aviation-Grade Gradient Fiber Media

Adopting high-purity hydrophilic borosilicate glass fiber, the media features excellent chemical compatibility with jet fuel, diesel, gasoline and light hydrocarbon solvents. The graded density structure achieves balanced dirt holding capacity and coalescing accuracy, effectively removing micro water droplets and fine solid particles without fiber shedding or medium failure.

2. High-Strength Structural End Cap & Stable NBR Sealing

Reinforced composite end caps improve overall structural rigidity and temperature resistance. Equipped with original-standard NBR sealing gaskets, the filter maintains zero-leakage performance under cyclic pressure changes. The fully matched mounting interface ensures seamless assembly with original FAUDI filter vessels.

3. Anti-Collapse Support & Integrated Hot-Melt Process

Built-in rigid support tube effectively prevents media deformation and collapse under high differential pressure. Full hot-melt integral sealing eliminates adhesive aging and dissolution risks, avoiding secondary fluid pollution and adapting to 24-hour continuous industrial operation.

Application Scenarios

LEFILTER FAUDI Y.4-467/5 replacement coalescer is widely used in aviation fuel supply stations, refinery fuel processing systems, bulk fuel storage depots and industrial light hydrocarbon purification. It effectively improves fuel cleanliness, protects downstream compressors, precision instruments and pipeline systems from corrosion and liquid hammer damage, and stabilizes overall system operation efficiency.

Why Choose LEFILTER Y.4-467/5 Filter

All LEFILTER FAUDI replacement filters undergo strict bubble point and pressure resistance testing before delivery to ensure 100% interchangeability and OEM-level performance. Compared with ordinary generic products, our Y.4-467/5 element has higher dirt holding capacity and longer service life, reducing replacement frequency and system maintenance costs. We support sufficient spot inventory and fast global delivery, providing professional technical guidance and after-sales service for all industrial users.

FAQ for FAUDI Y.4-467/5 Coalescing Filter

Q1: Is LEFILTER Y.4-467/5 fully compatible with original FAUDI equipment?

A1: Yes. It completely matches the original size, flow direction and sealing structure, supporting direct drop-in replacement without any equipment modification.

Q2: What is the main function of FAUDI Y.4-467/5?

A2: It focuses on high-efficiency removal of free water, oil mist and fine solid particles in fuel hydrocarbons, meeting aviation-level purification standards.

Q3: What are the operating temperature and pressure limits?

A3: Stable operation ranges from -30℃ to +80℃, with max differential pressure of 5.2 bar. Over-range operation will shorten service life.

Q4: When to replace the Y.4-467/5 filter element?

A4: Replace timely when system differential pressure reaches 1.0 bar to avoid fluid bypass and reduced filtration efficiency.

Q5: What media is this filter suitable for?

A5: Ideal for jet fuel, diesel, gasoline and various light hydrocarbon industrial fluids, widely used in aviation and petrochemical industries.

Q6: Can it run continuously for a long time?

A6: Yes. Reinforced support structure and integrated hot-melt sealing ensure stable mechanical performance for long-cycle continuous operation.

Q7: Do you support sample testing and bulk customization?

A7: Free sample testing is available. We also provide customized marking and packaging services for bulk orders with fast global delivery.

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