STS 6003 | 7003 Fuel Polishing System – 3 GPM Automated Fuel Maintenance

The STS 6003 and STS 7003 are purpose-engineered for facilities requiring autonomous diesel polishing with a reliable 3 GPM flow rate. The combination of a TSC70 touchscreen controller, continuous-duty 1/3 HP spur gear pump, two-stage filtration, and LG-X 1500 magnetic conditioner delivers robust fuel maintenance. Programmable automation reduces manual oversight while integrated alarms alert operators to leaks, clogs, or water accumulation.

• Smart Filtration Controller with Programmable Scheduling: The STS 6003 is equipped with an intuitive touchscreen controller that allows operators to establish a fuel polishing schedule with up to three start and stop times for each day of the week. This fully autonomous operation ensures fuel is routinely filtered without requiring manual oversight. The controller also displays system status, alarm conditions, and service reminders, enabling proactive maintenance and minimizing unexpected downtime.
• Continuous-Duty Spur Gear Pump with Viton Seals: A robust 1/3 HP spur gear pump provides reliable fuel circulation at 3 GPM across a viscosity range of 1–10 cSt. The pump features Viton seals for superior chemical compatibility with diesel and bio-fuels, ensuring long-term durability. Designed for extended runtimes, this continuous-duty pump operates quietly and efficiently, reducing wear and tear on system components.
• Two-Stage Filtration for Comprehensive Contaminant Removal: The primary filtration stage combines a centrifugal water separator with a hydrophobic filter element. Incoming fuel is spun inside the vessel, forcing free water droplets to coalesce and drop into a collection sump. The hydrophobic media repels entrained water, preventing it from reaching downstream components. The secondary stage utilizes a spin-on fine filter (available in 3μ, 10μ, or 25μ ratings) to capture microscopic solid particulates, delivering clean, polished fuel ready for engine use.
• LG-X 1500 Inline Magnetic Fuel Conditioner: Fuel passes through a powerful magnetic field generated by the LG-X 1500 inline conditioner. This passive process helps break down and de-cluster paraffin, asphaltene, and other naturally occurring compounds that contribute to fuel degradation. By stabilizing diesel and bio-fuels, the conditioner improves filterability, enhances combustion efficiency, and extends fuel storage life.
• Integrated Safety and Alarm Suite: The system incorporates multiple sensors to protect against damage and alert operators to potential issues. A vacuum switch (factory-set at 16 in-Hg) monitors suction-side restriction, preventing the pump from running dry. A pressure switch (22 PSI) detects excessive discharge-side pressure. A leak detection sensor in the containment basin triggers an immediate shutdown in the event of a spill. A water detection probe in the primary separator alerts when accumulated water needs draining. An adjustable flow switch verifies adequate flow rate, shutting down the pump under low flow conditions.
• Durable NEMA-Rated Enclosure: The system is housed in a powder-coated NEMA 3R-rated enclosure (with optional NEMA 4 or 4X upgrades). This rugged construction protects internal components from falling rain, sleet, snow, and external ice formation, allowing confident installation outdoors, in mechanical rooms, or within generator enclosures without risk of weather-related damage.
• Flexible Upgrade Options: The STS 7003 series supports a range of optional upgrades, including automatic water drain (AWD) for reduced maintenance frequency, multi-tank polishing/transfer using motor-operated valves (MOVs), multi-point flow paths for improved tank cleaning coverage, enclosure heaters to prevent condensation, manual additive injection ports, and pressure/flow transmitters for detailed system monitoring.