CAA22-5SB Replacement for coalescing filter element

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%.

1. Product Introduction: Core Design for Reliable Separation

① Multi-Layer Coalescing Media

• 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.

② Durable Construction

• 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.

③ Customization Options

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.

2. Technical Specifications

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

3. Working Principle: 3-Step Droplet Separation

1. 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.

2. Coalescence: Media’s surface tension merges small droplets into larger ones (≥500μm)—hydrophobic coating repels water droplets in oil, accelerating merging.

3. 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.

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4. Application Fields: Real-World Results

① Petrochemical Refining

• 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.

② Power Plant Lubrication

• 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.

③ Marine Fuel Systems

• 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%.

④ Food & Beverage

• 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.

5. Q&A: Key Customer Concerns

Q1: Will it work for my liquid type?

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.

Q2: How to check if the cartridge needs replacement?

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).

Q3: Is it compatible with high-viscosity liquids?

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).