In industrial processes—from petrochemical refining to power generation—emulsified liquids (e.g., water in oil, oil in water) cause equipment corrosion, reduced oil lubricity, and product quality failures. As a listed filtration specialist (Stock Code: 837936), LEFILTER’s Coalescing Filter Cartridge solves this pain point. Engineered with multi-layer media and precision structure, it separates sub-micron droplets (down to 0.1μm) with 99.9% efficiency, meeting ISO 18797 standards while cutting separation costs by 35%.
Outer Pre-Filter Layer: 304 stainless steel mesh (30μm pore) traps solid contaminants (rust, debris) to protect inner media, avoiding clogging and extending service life by 30%.
Middle Coalescing Layer: Proprietary glass-polyester composite media—hydrophobic coating for water-in-oil separation, hydrophilic for oil-in-water. The media’s micro-porous structure captures tiny droplets, merging them into larger ones via surface tension.
Inner Separation Layer: High-density polyester fabric guides coalesced droplets (≥500μm) to the filter housing bottom, ensuring no re-emulsification.
Housing & Core: Electrostatically coated carbon steel (corrosion-resistant) or 316L stainless steel (for offshore/high-corrosion environments). 304 stainless steel inner core resists 1.0MPa pressure, preventing collapse.
Seal Design: FKM O-rings (high temp/chemical resistance) + double-lip polyurethane gasket—0% bypass leakage, tested to hold pressure with no drop >0.01MPa in 30 minutes.
Tailor to your needs: non-standard lengths (10–40 inch), media types (glass fiber for 0.1μm precision, polyester for high flow), or food-grade materials (NSF H1 compliant for F&B use)—delivered in 5–7 days.
| Parameter | Standard Details | Custom Options |
|---|
| Separation Precision | 0.1μm, 0.5μm, 1μm, 5μm (droplet size) | 0.05μm (ultra-precision for pharma) |
| Operating Pressure | ≤1.0MPa (static), ≤0.8MPa (dynamic) | ≤1.5MPa (reinforced core) |
| Temp Range | -20℃~120℃ (FKM seals) | -40℃~150℃ (silicone seals + ceramic media) |
| Media Material | Glass-polyester composite, 304 mesh | Food-grade PP media, PTFE (acid-resistant) |
| Flow Rate | 15–50 L/min (10-inch); 40–120 L/min (30-inch) | Up to 150 L/min (large-diameter models) |
| Droplet Removal Efficiency | ≥99.9% (for target droplet size) | ≥99.99% (ultra-high efficiency models) |
| Compatibility | Mineral oil, diesel, hydraulic oil, solvents | Aviation fuel, food-grade oils |
Pre-Filtration & Droplet Capture: Contaminated liquid enters the outer mesh, where solids are trapped. Tiny droplets (0.1–5μm) stick to the middle coalescing media via inertial impaction and Brownian diffusion.
Coalescence: Media’s surface tension merges small droplets into larger ones (≥500μm)—hydrophobic coating repels water droplets in oil, accelerating merging.
Gravity Separation: Large droplets slide down the inner layer to the housing bottom, where they’re drained. Clean liquid exits through the core, with no re-emulsification.
Case: Shandong refinery used 1μm cartridges to remove water from diesel.
Result: Water content dropped from 500ppm to <10ppm, meeting GB 252 standard; diesel storage life extended by 6 months.
Case: Henan thermal power plant installed 0.5μm cartridges in turbine oil systems.
Result: Water in oil reduced from 200ppm to <20ppm; turbine bearing wear decreased by 70%, maintenance intervals doubled.
Case: Singapore shipping company used 5μm cartridges for ship diesel tanks.
Result: Water separation efficiency 99.9%, fuel injector clogging eliminated; fuel consumption reduced by 5%.
Case: Zhejiang soy sauce factory used food-grade cartridges to separate oil from wastewater.
Result: Oil content in wastewater <5ppm, meeting discharge standards; oil recovered for reuse, saving ¥20k/year.
A1: Yes—we offer media for water-in-oil (hydrophobic) and oil-in-water (hydrophilic) separation. Send us your liquid type (e.g., diesel, hydraulic oil) and emulsion type—we’ll recommend the right media.
A2: Replace when: ① Pressure drop exceeds 0.2MPa; ② Separation efficiency drops (test via oil/water content meter); ③ Service life reaches 3–6 months (varies by contamination level).
A3: Yes—we offer low-resistance media for high-viscosity oils (e.g., ISO VG 680 gear oil) to maintain flow rate (no more than 10% flow reduction).
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