Replacement Facet ST318FA-5 Separator Filter Element

Product Overview

Manufactured with high-performance hydrophobic treated glass fiber media, ST318FA-5 completely repels residual water droplets separated by the front-stage coalescer. It avoids secondary water emulsification, effectively solving problems like fuel turbidity, residual moisture and pipeline corrosion caused by incomplete water removal in fuel systems. Our upgraded replacement separator optimizes fiber layer density and full epoxy integral bonding craft, maintaining consistent low pressure drop during 24/7 continuous fuel transfer and extending maintenance intervals compared to generic low-cost substitutes.

Separation Working Principle

1. Fuel mixed with separated tiny water droplets flows into the inner core and permeates outward to the hydrophobic filter media.

2. The special water-repellent fiber surface repels all water beads, preventing water from penetrating through the filter layer.

3. Only clean, water-free jet fuel, diesel or light hydrocarbon liquid passes through the separator media and flows out from the housing outlet.

4. Blocked water droplets gather and merge into large water masses on the outer surface of the separator element, sliding down by gravity and settling into the water storage sump at the bottom of filter vessels for regular drainage.

Core Structural & Material Advantages

1. Professional Hydrophobic Treated Glass Fiber Media

   Specially modified water-repellent fiber maintains permanent hydrophobic performance after long-term fuel immersion, reliably intercepting all residual free water droplets without water penetration. Outstanding chemical compatibility with jet fuel, diesel and gasoline, no fiber shedding or performance attenuation after thousands of working hours.

2. Standard ST-FA Series Integrated End Cap Structure

   Precision rolled metal end caps fully replicate original Facet dimensional parameters, stable positioning inside filter vessels without shifting under fluctuating fluid pressure.

3. Full-Perimeter High-Strength Epoxy Integral Sealing

   End caps, separator media and internal perforated steel support tube are fully bonded with anti-corrosion epoxy resin, eliminating bypass leakage channels that cause water short-circuit and failed separation effect.

4. Epoxy-Coated Anti-Collapse Central Support Tube

   Internal rust-proof perforated steel core provides powerful radial support, preventing media shrinkage and deformation under elevated differential pressure during heavy-load continuous fuel operation.

Full List of Equivalent Facet Separator Filter Models

Group 1 ST FA Series

Group 2 ST FB / FD / FE Series

Group 3 SS FA Series

Group 4 SS FB / FD / FE Series

Group 5 SM FA Series

Group 6 SM FD / FB / FE Series

Main Application Scenarios

Unique Product Competitive Strengths

1. 100% dimensional and performance matching genuine Facet separator filters, direct drop-in replacement without housing modification

2. Permanent hydrophobic media ensures zero water penetration, completely eliminating secondary fuel emulsification risks

3. Optimized fiber layer layout delivers stable low pressure drop, reducing system energy consumption during long-term continuous operation

4. Complete full-series model inventory for one-stop bulk procurement, no need to source different suppliers for varied length specifications

5. Rigorous factory pre-delivery testing including water repellency test and differential pressure endurance inspection to guarantee consistent separation performance

6. Flexible supply solutions for sample verification, small batch trial orders and large-scale long-term energy project contracts, supporting global fast delivery.

Targeted FAQ

Q: What is the core function of Facet ST318FA-5 separator filter?

A: Different from coalescing filters that gather tiny water droplets, ST318FA-5 hydrophobic separator repels all separated water beads, only allowing dry clean fuel to pass through, realizing final fuel-water separation.

Q: What is the difference between ST, SS and SM series separator elements?

A: ST series is standard long-body separator, SS series is reinforced high-pressure resistant type, SM series is compact short-size separator; all three series adopt the same hydrophobic separation principle, only varying in overall length and housing matching size.

Q: Can LEFILTER ST318FA-5 fully replace original Facet separator cartridges?

A: Yes, all outer diameter, inner diameter, end cap size, media layout and epoxy sealing structure strictly replicate OEM standards, plug-and-play without any equipment adjustment.

Q: Do you produce all Facet equivalent separator models listed in the specification table?

A: We supply every model code shown in the chart, covering full ST FA/FB/FD/FE/FF, SS FA/FB/FD/FE/FF and SM FA/FB/FD/FE/FF separator replacement cartridges.

Q: What working media can this separator filter be applied to?

A: It is compatible with aviation jet fuel, diesel, gasoline and various light industrial hydrocarbon fluids, widely used in all kinds of fuel separator purification systems.

Equivalent Original Model: Facet ST318FA-5

• Product Series: Facet ST-FA Standard Hydrophobic Separator Filter

• Flow Direction: Inside to Outside

• Media Characteristic: Permanent hydrophobic water repellent

• Working Temperature Range: -30℃ ~ +80℃

• Maximum Allowable Differential Pressure: 5.0 bar

• Recommended Replacement Differential Pressure: 0.9 bar

• Filter Media: Hydrophobic treated borosilicate glass fiber

• Bonding Material: Industrial anti-corrosion epoxy resin

• Applicable Process Media: Aviation jet fuel, diesel, gasoline, light industrial hydrocarbon fluids