The Moatti 350 series represents the heavy-duty pinnacle of automatic back-flushing filtration. Engineered specifically for the world’s largest propulsion and power generation plants, the 350 series elements provide the high-volume flow and rigorous debris removal required by massive two-stroke and four-stroke engines.
Unmatched Filtration for Industrial Giants
In large engine systems—such as those found in Capesize bulk carriers, VLCCs, and land-based utility plants—the sheer volume of lubricating oil and fuel required is staggering. The Moatti 350 is designed to maintain fluid integrity under these extreme flow rates without compromising on micron-level precision.
- High-Volume Throughput: The 350 series features an expanded disc stack surface area, allowing it to process massive quantities of fluid while maintaining a low pressure differential.
- Heavy-Duty Construction: Built with reinforced stainless steel components, these elements are designed to withstand the intense hydraulic pulses and thermal stresses found in large-bore engine rooms.
- Automated Continuity: The 350 series uses a robust hydraulic or electric drive for back-flushing, ensuring that the cleaning cycle is never interrupted, even when dealing with high concentrations of soot or cat fines.
Primary Applications & Engine Compatibility
The Moatti 350 is the “gold standard” for critical, high-output machinery where any lubrication failure results in catastrophic costs.
1. Low-Speed Two-Stroke Propulsion
These are the primary filters for the largest marine engines on the planet. The 350 series is commonly specified for:
- MAN B&W (G-series and S-series engines)
- WinGD / Wärtsilä (X-series and RT-flex engines)
2. Utility-Scale Power Generation
In stationary power plants using heavy fuel oil (HFO) or crude oil, the Moatti 350 serves as the primary defense for banks of medium-speed engines, ensuring 24/7 grid stability.
3. Centralized Oil Treatment Modules
For large-scale industrial complexes, the 350 can be used in a centralized “kidney-loop” configuration to purify the lubrication oil of multiple secondary machines simultaneously.
Technical Specifications & Performance
| Feature | Performance Detail |
| Filter Media | Multilayered Stainless Steel Disc Stack |
| Available Ratings | 10µm, 15µm, 25µm, 34µm, and 48µm |
| Cleaning Mechanism | Full-flow automatic back-flushing |
| Body Material | High-tensile, corrosion-resistant alloys |
Maintenance for Mission-Critical Systems
To ensure your Moatti 350 elements provide decades of reliable service, adhere to these technical protocols:
- Monitor the Back-Flush Counter: A significant increase in cycles per hour is an early warning sign of deteriorating fuel quality or an impending filter “blinding” event.
- Strategic Ultrasonic Cleaning: Due to the large surface area, these elements should undergo scheduled ultrasonic cleaning to remove “lacquering” effects caused by high-temperature oil oxidation.
- Inspect Diversion Valves: Ensure the internal bypass and diversion mechanisms are sealing correctly to prevent unfiltered “slugs” of oil from reaching the main bearings.
