Replacement Facet ST648FF-5 High Temperature Resistant Fuel Separator Cartridge

Product Overview

LEFILTER high-performance replacement Facet ST648FF-5 fuel separator filter is a premium FF-grade second-stage separation cartridge designed for heavy-duty Facet fuel filter separator systems. Manufactured to meet API-1581 5th edition aviation filtration standards, this element features full hydrophobic glass fiber media and Velocigard balanced flow technology. Engineered for high-temperature and high-flow fuel working conditions, ST648FF-5 delivers superior water repellency, ultra-fine contaminant interception and stable low-pressure-drop operation. It effectively eliminates residual free water, micro-droplets and fine solid particles after primary coalescence, preventing fuel re-emulsification and downstream equipment corrosion. Fully interchangeable with original Facet components, it serves as a reliable long-cycle replacement for aviation fuel depots, refinery process lines and large-scale fuel terminal facilities.

Unique Product Characteristics

The Facet ST648FF-5 belongs to the top-tier ST-series FF high-temperature resistant separator class, differing significantly from standard FB, FD and FE models. The FF configuration adopts full-enhanced hydrophobic treatment and high-temperature tolerant fiber formulation, supporting continuous operation at up to 115°C (240°F). Its optimized multi-layer gradient structure provides larger filtration area and stronger dirt holding capacity, solving common pain points such as high-temperature water failure, media aging and short service life of ordinary separators.

Equipped with uniform flow distribution design, ST648FF-5 avoids local flow concentration and early clogging. The full epoxy integral sealing structure completely eliminates bypass leakage, while the reinforced anti-collapse inner core ensures structural stability under long-term pressure fluctuation and high-temperature fuel scouring. It is the preferred separation element for harsh and high-standard fuel purification projects.

Working Principle

ST648FF-5 operates on the professional hydrophobic repulsion separation mechanism of two-stage fuel purification systems:

1. Fuel fluid containing coalesced large water droplets uniformly penetrates the separator media from inside to outside.

2. The high-temperature resistant full-hydrophobic fiber layer strongly repels all water molecules and droplets, achieving 100% water blocking without penetration.

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

4. Blocked water droplets accumulate on the outer surface, merge into large water masses, and settle into the bottom sump by gravity, realizing high-purity dry fuel output.

Full Facet ST/SS/SM Separator Filter Complete 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-48FE-5, SM-48FF-5, SM-56FB-5, SM-56FF-5

Application Fields

Suitable for high-temperature fuel processing systems of petrochemical refineries, large airport central fuel depots, bulk fuel storage and transfer terminals, port fuel bunkering equipment and high-standard industrial fuel skids. ST648FF-5 is widely used as secondary separation filter to remove residual water and fine impurities, effectively protecting fuel pumps, precision flow meters and fueling systems from water-induced corrosion and particle abrasion.

Product Advantages

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

2. Balanced flow technology avoids local overload, greatly prolonging filter service life

3. Permanent hydrophobic media ensures zero water penetration, completely preventing fuel secondary emulsification

4. High dirt holding capacity adapts to large-flow and long-cycle continuous operation

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

FAQ

Q: What is the advantage of ST648FF-5 over ordinary separators?

A: ST648FF-5 is an FF high-temperature resistant upgraded model, with excellent thermal stability and micro-water interception capability, perfectly adapting to high-temperature fuel working conditions that ordinary FD/FB separators cannot handle.

Q: What is the maximum temperature resistance of ST648FF-5?

A: It can operate stably for a long time at 115℃ (240°F), suitable for high-temperature fuel production and transmission lines.

Q: Is this replacement element fully compatible with original Facet equipment?

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

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- Series: ST Series FF High-Temperature Heavy-Duty Separator

- Compliance Standard: API-1581 5th Edition / EI 1581 Aviation Standard

- Flow Direction: Inside to Outside

- Max Working Temperature: 115℃ (240°F)

- Working pH Range: 5 - 9

- Max Differential Pressure: 5.0 bar

- Recommended Replacement DP: 0.9 bar

- Filter Media: High-temperature resistant hydrophobic borosilicate glass fiber

- Sealing Options: NBR / Viton optional

- Applicable Media: Aviation jet fuel, diesel, gasoline, high-temperature light hydrocarbon fluids