Facet ST656FB-5 Heavy-Duty Fuel Water Separator Replacement Filter

LEFILTER provides high-performance interchangeable Facet ST656FB-5 separator filter, a heavy-duty FB-grade hydrophobic separation cartridge designed for large-flow industrial and aviation fuel separator systems. Built to comply with API-1581 5th edition fuel filtration standards, the ST656FB-5 features thickened gradient hydrophobic fiber media, superior dirt holding capacity and stable low pressure drop performance. As a secondary stage separation element, it efficiently blocks free water, dispersed micro-droplets and fine solid contaminants after coalescence treatment, eliminating fuel turbidity and re-emulsification risks. With heavy-duty structural design, this cartridge is ideal for high-flow, high-impurity continuous fuel processing environments and offers 100% plug-and-play replacement for genuine Facet filter assemblies.

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Facet ST656FB-5 Heavy-Duty Fuel Water Separator Replacement Filter

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Facet ST656FB-5 Heavy-Duty Fuel Water Separator Replacement Filter

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Oil Purification

Gas Filtration

Filter Element

Product Introduction

Product Highlights & Design Features

The Facet ST656FB-5 belongs to the ST-series FB heavy-duty separator category, specially optimized for large-diameter, long-length high-flow fuel purification requirements. Compared with medium and small-size separator models, ST656FB-5 adopts enhanced fiber compaction and multi-layer gradient filtration structure, greatly improving overall contaminant retention capacity and operational stability.

The entire filter media is permanently hydrophobic treated, ensuring absolute water repellency without water absorption or performance degradation during long-term fuel flushing. The full epoxy sealing process eliminates fluid bypass and short-circuit filtration, while the reinforced metal inner support tube prevents media expansion and deformation under high differential pressure. It is a reliable long-service-life solution for large fuel terminals and refinery fuel transfer systems.

Separation Working Principle

ST656FB-5 adopts standard Facet hydrophobic rejection separation technology for two-stage fuel purification:

1. Fuel containing coalesced large water droplets flows radially from inside to outside through the separator media.

2. FB-grade heavy-duty hydrophobic fiber layer fully rejects all water droplets, preventing water penetration.

3. Only clean, dry jet fuel, diesel and light hydrocarbon fuel pass through the filter smoothly.

4. Blocked water accumulates on the outer surface, merges into large water masses, and settles to the vessel bottom by gravity, achieving complete fuel-water separation.

Full Facet ST/SS/SM Complete Separator Model List

ST Series

ST318FA-5, ST324FA-5, ST412FC-5, ST415FB-5, ST417FB-5, ST422FC-5, ST424FB-5, ST430FB-5, ST432FC-5, ST436FB-5, ST609FB-5, ST609FF-5, ST611FD-5, ST612FB-5, ST614FD-5, ST616FD-5, ST618FB-5, ST622FD-5, ST624FB-5, ST624FE-5, ST624FF-5, ST629FD-5, ST630FB-5, ST630FD-5, ST630FE-5, ST630FF-5, ST633FB-5, ST633FD-5, ST636FB-5, ST636FD-5, ST636FE-5, ST636FF-5, ST638FD-5, ST640FD-5, ST640FE-5, ST640FF-5, ST643FD-5, ST644FB-5, ST644FD-5, ST644FE-5, ST644FF-5, ST648FD-5, ST648FE-5, ST648FF-5, ST656FB-5, ST656FF-5

SS Series

SS318FA-5, SS324FA-5, SS412FC-5, SS415FB-5, SS417FB-5, SS422FC-5, SS424FB-5, SS430FB-5, SS432FC-5, SS436FB-5, SS609FB-5, SS609FF-5, SS611FD-5, SS612FB-5, SS614FD-5, SS616FD-5, SS618FB-5, SS622FD-5, SS624FB-5, SS624FE-5, SS624FF-5, SS629FD-5, SS630FB-5, SS630FD-5, SS630FE-5, SS630FF-5, SS633FB-5, SS633FD-5, SS636FB-5, SS636FD-5, SS636FE-5, SS636FF-5, SS638FD-5, SS640FD-5, SS640FE-5, SS640FF-5, SS643FD-5, SS644FB-5, SS644FD-5, SS644FE-5, SS644FF-5, SS648FD-5, SS648FE-5, SS648FF-5, SS656FB-5, SS656FF-5

SM Series

SM-318FA-5, SM-324FA-5, SM-412FC-5, SM-415FB-5, SM-417FB-5, SM-422FC-5, SM-424FB-5, SM-430FB-5, SM-432FC-5, SM-436FB-5, SM-09FB-5, SM-09FF-5, SM-11FD-5, SM-12FB-5, SM-14FD-5, SM-16FD-5, SM-18FB-5, SM-22FD-5, SM-24FB-5, SM-24FE-5, SM-24FF-5, SM-29FD-5, SM-30FB-5, SM-30FD-5, SM-30FE-5, SM-33FB-5, SM-33FD-5, SM-36FB-5, SM-36FD-5, SM-36FE-5, SM-36FF-5, SM-38FD-5, SM-40FD-5, SM-40FE-5, SM-40FF-5, SM-43FB-5, SM-43FD-5, SM-44FB-5, SM-44FD-5, SM-44FE-5, SM-44FF-5, SM-48FD-5, SM-48FF-5, SM-56FB-5, SM-56FF-5

Industrial Applications

Mainly used for large-flow fuel purification systems including bulk oil storage terminals, port fuel bunkering stations, petrochemical refinery finished fuel pipelines and large airport fuel depots. ST656FB-5 effectively removes coalesced free water and fine particulate impurities, protecting downstream fuel pumps, flow meters and control valves from water corrosion and abrasive wear.

Core Product Advantages

1. FB heavy-duty enhanced structure, excellent adaptability for large-flow and high-load fuel working conditions

2. Super high dirt holding capacity, greatly extending service cycle and reducing maintenance frequency

3. Stable low pressure drop performance, saving long-term system operating energy consumption

4. Strict OEM dimensional standard, fully interchangeable with original Facet equipment

5. Full series ST/SS/SM Facet separator filters in stock for one-stop procurement

FAQ

Q: What is the main application of ST656FB-5?

A: ST656FB-5 is a heavy-duty large-flow FB-grade separator, mainly used for large oil terminals and refinery fuel lines requiring high flow rate and long service life.

Q: Why choose FB-type separator for large-flow systems?

A: FB series adopts thicker fiber layer and enhanced structural stability, which is more resistant to high flow impact and dirt clogging than FA/FC types.

Q: Is this replacement filter completely compatible?

A: Yes, 100% size, structure and performance consistent with original Facet ST656FB-5, plug and play.

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