Replacement Facet ST609FF-5 Fuel Separator Filter Element

Facet ST609FF-5 belongs to the professional ST-series FF high-temperature heavy-duty separator category, different from conventional FA/FB/FD types. The FF suffix represents full-enhanced hydrophobic structure and high-temperature resistant formula, specially optimized for harsh working conditions with elevated operating temperature and complex impurity components.

Equipped with Facet exclusive Velocigard balanced flow technology, ST609FF-5 uniformly distributes fluid flow inside the element, avoiding local over-flow and early media failure. The permanent hydrophobic fiber layer will never absorb water or fail after long-term high-temperature fuel scouring, maintaining stable zero-penetration water blocking effect. Compared with ordinary separators, this model has stronger chemical stability, wider pH adaptability and longer service life, making it the preferred separator for high-standard aviation fuel and industrial high-temperature fuel purification systems.

Working Principle

ST609FF-5 follows the classic hydrophobic repulsion separation principle of Facet two-stage fuel purification system:

1. The fuel mixed with coalesced large water droplets flows evenly through the separator media from inside to outside.

2. The special full-hydrophobic fiber structure produces strong repulsion to all free water droplets, blocking water penetration completely.

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

4. Blocked water droplets gather on the outer surface of the element, merge into large water masses, and settle in the bottom sump by gravity, realizing thorough fuel-water separation and high-purity fuel output.

Product Features

- FF high-temperature heavy-duty grade: Adaptable to max 115℃ high-temperature fuel working conditions

- Permanent full hydrophobic performance: Zero water penetration, anti-emulsification, stable long-term separation effect

- Velocigard balanced flow design: Uniform fluid distribution, avoiding local clogging and pressure surge

- Wide chemical adaptability: Stable performance in pH 5-9 medium environment

- High dirt holding capacity: Multi-layer gradient fiber structure, extending replacement cycle

- Integral epoxy sealing & reinforced support core: Anti-deformation, zero bypass leakage

- Full OEM compatibility: 100% interchangeable with original Facet ST609FF-5

Full Complete Facet Separator Filter 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

Applications

High-temperature fuel processing lines of petrochemical refineries, large airport central fuel depots, bulk fuel storage and transfer terminals, marine high-temperature fuel bunkering systems, industrial skid-mounted fuel separator equipment and aviation fuel supply systems requiring high cleanliness standards. Effectively protects downstream fuel pumps, flow meters, control valves and precision fueling equipment from water corrosion and particle wear.

Product Advantages

1. Professional FF high-temperature resistant formula, stable separation performance under 115℃ extreme working conditions

2. Balanced flow velocity design avoids local media overload, greatly prolonging service life

3. Excellent hydrophobic stability, no water penetration or performance attenuation after long-term operation

4. Strictly manufactured in accordance with API and aviation industry standards, high safety and reliability

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

FAQ

Q: What is the difference between ST609FF-5 and ordinary FB/FD separators?

A: ST609FF-5 is an FF high-temperature enhanced version, with higher temperature resistance, more stable hydrophobic performance and balanced flow structure, suitable for high-temperature and high-standard fuel purification scenarios that ordinary models cannot adapt to.

Q: What is the maximum working temperature of ST609FF-5?

A: The maximum allowable working temperature reaches 115℃, which is significantly higher than conventional separator elements.

Q: Is LEFILTER ST609FF-5 fully interchangeable with original Facet?

A: Yes, all dimensions, structural interface and separation performance fully meet OEM standards, plug and play without any modification.