For engineers and fleet managers, the name Moatti is synonymous with high-efficiency, self-cleaning filtration. But what exactly makes up the “Filter Element” in these systems, and why is it different from a standard cartridge?
As a specialist manufacturer of these components, we’ve put together this guide to explain the core technology that protects your engine’s most critical systems.
The Core Design: Disc-Type Surface Filtration
Unlike traditional filters that use disposable paper or “depth” media, a Moatti filter element is a permanent, disc-shaped component made for surface filtration.
- Structure: Each element consists of a robust aluminum or stainless steel frame (armature) supporting a fine stainless steel wire mesh.
- The “Stack”: These individual discs are stacked on top of each other to form “columns.” This modular design allows the filter to provide a massive surface area within a very compact housing.
- Surface vs. Depth: In a Moatti element, contaminants are trapped on the surface of the mesh. This is what allows the system to clean itself through backflushing—something paper filters cannot do.
The Two Primary Types of Moatti Elements
In most Moatti automatic backflushing systems, there are two distinct types of elements working together:
1. Full-Flow Filter Elements
These are the “front-line” defenders. 100% of the oil or fuel passing to the engine goes through these elements. They are designed for a low and constant pressure drop, ensuring the engine always receives a steady supply of clean lubricant or fuel.
2. Diversion Filter Elements
The diversion elements handle the “dirty work.” When the system backflushes, the concentrated sludge is sent to a secondary chamber containing these elements. They further concentrate the impurities, allowing clean oil to be recovered and returned to the system while trapping the waste for periodic draining.
Key Technical Advantages
| Feature | Benefit |
| No Paper/Cellulose | Elements are made of metal; they don’t soak up oil or collapse under pressure. |
| High Micron Precision | Available in ratings as fine as 6µm (for hydraulic control oil) and 10µm (for fuel). |
| Hydraulic Drive | The elements are cleaned by a distributor driven by the oil’s own pressure—no electricity needed. |
| Sustainability | Since elements are cleaned rather than replaced, they eliminate the waste of thousands of filter cartridges. |
Why Quality Matters in Manufacturing
As a manufacturer, we emphasize that not all “compatible” elements are created equal. The performance of a Moatti filter depends on two critical factors:
- Mesh Integrity: The stainless steel mesh must be perfectly tensioned. If it “flutters” during the backflush pulse, it will eventually crack (metal fatigue), leading to engine contamination.
- Frame Precision: The ribbed frames must align perfectly to create sealed filtration columns. Even a 1mm gap can allow unfiltered oil to bypass the element.
Summary
A Moatti filter element is more than just a strainer; it is a precision-engineered part of a self-sustaining cleaning cycle. By choosing high-quality, factory-direct elements, you ensure that your automatic filter continues to provide OEM-level protection for the life of your engine.
