High-Efficiency Coalescing Filter Elements-Liquid and Liquid

Product Overview

AALfilter’s Coalescing filter elements are precision-engineered components designed for oil/water separation systems. Utilizing advanced composite materials (e.g., glass fiber, PTFE membrane), they perform dual functions:

Coalescing: Aggregates micron-sized water droplets (0.1–25μm) into larger droplets via multilayer fiber media.

Separation: Hydrophobic layers block coalesced water while allowing clean oil flow.

Widely used in aviation fuel, lubricants, and natural gas processing to extend equipment lifespan.

Key Features

✅ Dual Filtration Mechanism

Coalescing Layer: Multi-layer composite fiber structure captures tiny liquid droplets and coalesces them into larger droplets (precision: 0.1–25 μm).

Separation Layer: PTFE (Teflon) hydrophobic material blocks water droplets, allowing only oil to pass through.

✅ High-Performance Materials

Glass fiber/polyester fiber media, resistant to high temperatures (≤120°C) and corrosion (pH 2–12).

Stainless steel frame for strong structural support (operating pressure ≤0.3MPa).

✅ Long Lifespan & Low Maintenance

High dirt-holding capacity, extended replacement intervals (replace when pressure differential ≥0.15MPa).

Technical Specifications

Applications

✅ Aviation & Energy: Aviation fuel dehydration, natural gas droplet separation.

✅ Industrial Lubricants: Turbine and hydraulic system oil purification.

✅ Chemical & Petrochemical: Benzene-based compounds, liquefied petroleum gas (LPG) filtration.

✅ Environmental Water Treatment: Oil-water separation in catering wastewater .

❓Frequently Asked Questions (FAQ)

1. What is a coalescing filter element used for?
Coalescing filter elements are used to separate immiscible liquids, such as removing water or oil aerosols from another fluid. They are especially effective in polishing and final filtration stages in liquid-liquid separation.

2. What efficiency can AAL Filter’s coalescing elements achieve?
Our coalescing filters can remove 99.99% of liquid aerosols down to 0.1 micron, ensuring clean output and protecting downstream systems.

3. How does the coalescing process work in your filter?
The fluid flows from the inside to the outside of the element. Micro-droplets are captured by the fine fiber media and gradually merge into larger drops, which then settle and drain by gravity.

4. Can your filters be used to replace other brands?
Yes. We manufacture replacement coalescing elements compatible with major brands like Pall, PECO, Parker, and Ingersoll Rand, among others.

5. What materials are used in your coalescing filters?
Our standard options include borosilicate glass fiber, polyester, or polypropylene media, with stainless steel or plastic end caps, depending on your application.

6. Do I need a pre-filter before using a coalescing filter?
Yes, a pre-filter is recommended to remove larger particles and extend the service life of the coalescing element.

7. Can you provide custom sizes or specifications?
Absolutely. We support custom sizes, materials, and configurations to suit your specific system or equipment.

8. What industries are these filters typically used in?
While commonly used in oil & gas, petrochemical, and industrial liquid processes, these filters can be adapted to various clean fluid separation needs.

At AAL Filter, we manufacture high-efficiency coalescing filter elements designed for the separation of immiscible liquids, such as oil and water. Our filters are widely used where clean, efficient liquid-liquid separation is essential.

We also supply replacement elements compatible with major brands, including Pall, Parker, PECO, and Ingersoll Rand.

The wet fluid enters the coalescing filter element and flows from the inside to the outside. As the mixture passes through the multi-layer microfiber media, fine liquid aerosols (such as oil or water) are captured and gradually merged into larger droplets. These larger droplets then coalesce and drain downward by gravity to the bottom of the housing for removal. The result is a clean, separated fluid stream exiting the vessel.

AAL Filter coalescing elements help ensure reliable operation, extended equipment life, and cleaner fluid systems.

📩 Contact us for data sheets, quotations, or replacement assistance — we’re here to support your needs.