Coalescing separation oil filter – 4-stage, water <100 PPM.

1. Product Overview

Aite Coalescing & Separating Oil Filter is a high-performance oil purification 

system that uses advanced coalescing and separation technology to remove 

water and particulate contaminants from hydraulic oil, lubricating oil, 

turbine oil, and other industrial fluids. Aite Coalescing & Separating Oil Filter

 contains two filter elements with different functions – the coalescing filter

 element and the separation filter element. When oil flows through the 

coalescing separator, it goes through four stages of filtration, coalescence,

 sedimentation, and separation to achieve the function of filtering particle 

pollutants and removing water.

As a professional manufacturer specializing in oil purification equipment and

 filtration solutions, we deliver Aite Coalescing & Separating Oil Filter with 

stable performance, reliable construction, and competitive pricing for industrial 

facilities worldwide.

2. Working Principle

Aite Coalescing & Separating Oil Filter operates on the principle that different

 liquids have different surface tensions. When liquid flows through a hole, 

the smaller the surface tension, the faster the rate of passing through.

When different mixed liquids flow into Aite Coalescing & Separating Oil Filter, 

they first enter the coalescing filter element. The coalescing filter element has

 a multi-layer filter medium with pore size increasing layer by layer. Due to the 

difference in surface tension, oil passes through the filter quickly, while water 

passes much slower. Because the coalescing filter element adopts hydrophilic 

material, tiny water droplets are adsorbed on the surface of the filter layer, 

resulting in coalescence of water droplets. Under the action of kinetic energy,

 small droplets race through the opening and gradually converge into large 

droplets, which settle and separate from the oil under the action of gravity.

After oil passes through the coalescing filter element, there are still small water

 droplets moving forward to the separation filter element under the action of

 inertia. The separator element is made of hydrophobic material. When oil 

passes through the separator element, water is kept out of the separator

 element, while oil passes through and is discharged from the outlet.

3. Four-Stage Separation Process

Aite Coalescing & Separating Oil Filter achieves particle filtration and water

 removal through four internal stages:

3.1 Filtration Stage

The oil first flows from inside to outside through the coalescing filter element.

 The coalescing filter element is a suitable combination of glass fiber and other 

synthetic materials, specially prepared for oil dehydration with good

 hydrophilicity. The high-precision filter material in the inner layer first removes 

particle pollutants from the oil.

3.2 Coalescence Stage

The outer layer of demulsification coalesces tiny water droplets in the oil into

 larger droplets. The coalescing filter core has the dual function of filtering 

particulate pollutants and coalescing water.

3.3 Sedimentation Stage

Larger water droplets rely on their own gravity to settle into the sedimentation

 tank. Smaller water droplets that settle too late are carried by the oil flow to 

the separation filter.

3.4 Separation Stage

The separation filter core is made of stainless steel mesh with good

 hydrophobicity. When oil flows through the separation filter element from 

outside to inside, small water beads are intercepted outside the filter 

element – only allowing oil through and not letting water through, further 

separating the water.

4. System Components

Aite Coalescing & Separating Oil Filter incorporates four integrated systems:

Particle Filtration System – Uses imported filter material as filter medium with

 large filter area design, filtering very fine particle impurities to achieve high 

cleanliness.

Coalescence System – Composed of a set of coalescing filter elements adopting 

polar molecular structure. Free water and emulsified water in the oil are 

coalesced into large water droplets, which settle into the water storage tank 

under gravity.

Separation System – The separation filter element is made of hydrophobic

 material. When oil passes through, water droplets are blocked on the outer 

surface and coalesce with each other until settling into the water storage tank.

Drainage System – Separated water is stored in the water storage tank. 

When the interface height reaches the set value, the valve opens to discharge 

water until reaching the lower liquid level, then closes to stop drainage.

5. Technical Characteristics

Aite Coalescing & Separating Oil Filter delivers superior performance through

 the following key characteristics:

· Breaks all oil-water emulsification structures in oil

· Removes free water in oil with water content less than 100 PPM after

 treatment

· Filters solid particles in oil with cleanliness of NAS 6 or higher

· High filtration accuracy, large contaminant capacity, long filter element 

service life, and high dehydration efficiency

· No heating, vacuum, or high-speed centrifugal – low energy consumption 

and low use cost

· Does not change the physical and chemical properties of oil – prolonging 

oil service life

6. Technical Specifications

Parameter Specification

Technology Coalescing and separating dehydration

Water Content After Treatment Less than 100 PPM

Solid Particle Cleanliness NAS 6 or higher

Separation Stages Four-stage: filtration, coalescence, sedimentation, 

separation

Coalescing Element Material Glass fiber and synthetic materials (hydrophilic)

Separation Element Material Stainless steel mesh (hydrophobic)

Energy Consumption Low – no heating, vacuum, or high-speed centrifugal

Oil Properties No change to physical and chemical properties

Drainage Automatic based on interface height

7. Application Fields

Aite Coalescing & Separating Oil Filter is widely used across diverse industrial 

sectors:

Industry Typical Applications

Power Generation Purification of turbine oil and transformer oil

Hydraulic Systems Water removal and impurity removal filtration of hydraulic 

lubricating oil

Lubrication Systems Improving cleanliness of hydraulic lubrication systems

Manufacturing Oil purification for machine tools, presses, and automated

 equipment

Steel & Metallurgy Hydraulic and lubrication oil maintenance in rolling mills

Marine & Offshore Shipboard hydraulic and lubrication oil dehydration

Aite Coalescing & Separating Oil Filter is suitable for hydraulic oil, lubricating oil, 

turbine oil, transformer oil, and various industrial fluids – providing versatile

 filtration solutions across multiple industries and applications.

8. Frequently Asked Questions (FAQ)

Q1: What is the Aite Coalescing & Separating Oil Filter designed for?

A: Aite Coalescing & Separating Oil Filter is designed for dehydration and

 purification of hydraulic oil, lubricating oil, turbine oil, and transformer 

oil – removing particle impurities, emulsified water, and free water from oil.

Q2: How does the Aite Coalescing & Separating Oil Filter work?

A: Aite Coalescing & Separating Oil Filter operates on the principle of different 

surface tensions. Oil passes through the coalescing filter element quickly while 

water passes slowly, causing water droplets to coalesce into large droplets that 

settle by gravity. The separation filter element then keeps remaining water out

 while allowing oil to pass through.

Q3: What water content can the Aite Coalescing & Separating Oil Filter achieve?

A: Aite Coalescing & Separating Oil Filter removes free water in oil with water 

content less than 100 PPM after treatment – effectively breaking all oil-water

 emulsification structures.

Q4: What solid particle cleanliness can the Aite Coalescing & Separating Oil Filter 

achieve?

A: Aite Coalescing & Separating Oil Filter filters solid particles in oil with

 cleanliness of NAS 6 or higher – providing reliable protection for downstream 

equipment.

Q5: What are the four separation stages of the Aite Coalescing & Separating Oil 

Filter?

A: Aite Coalescing & Separating Oil Filter operates through four stages – filtration,

 coalescence, sedimentation, and separation – achieving particle filtration and

 water removal in a single integrated process.

Q6: Does the Aite Coalescing & Separating Oil Filter change the oil's properties?

A: No. Aite Coalescing & Separating Oil Filter does not change the physical and

 chemical properties of oil – preserving valuable additives and prolonging oil 

service life.

Q7: What is the energy consumption of the Aite Coalescing & Separating Oil 

Filter?

A: Aite Coalescing & Separating Oil Filter features low energy consumption and

 low use cost – with no heating, vacuum, or high-speed centrifugal processes

 required.

Q8: How does the drainage system work in the Aite Coalescing & Separating Oil 

Filter?

A: The drainage system in Aite Coalescing & Separating Oil Filter stores separated

 water in a water storage tank. When the interface height reaches the set value, 

the valve opens to discharge water until reaching the lower liquid level, 

then closes to stop drainage.

Q9: What industries use the Aite Coalescing & Separating Oil Filter?

A: Aite Coalescing & Separating Oil Filter is widely used in power generation, 

hydraulic systems, lubrication systems, manufacturing, steel and metallurgy, 

and marine industries.

Q10: What documentation is provided with the Aite Coalescing & Separating Oil 

Filter?

A: Each unit includes a factory test report, operating manual, electrical 

schematics, dimensional drawings, and material certificates – ensuring

 smooth installation and comprehensive operational guidance.

Q11: Can the Aite Coalescing & Separating Oil Filter be customized?

A: Yes. Custom options for Aite Coalescing & Separating Oil Filter include special 

flow rates, filtration precision, power supply voltage, and connector types – 

based on site-specific requirements.

Q12: Can I order a trial unit of the Aite Coalescing & Separating Oil Filter?

A: Yes. We support trial orders with standard delivery lead time of 20–30 

working days. Our technical team can provide custom configuration 

recommendations based on your oil type, flow requirements, 

and site conditions.

Aite Coalescing & Separating Oil Filter – four-stage separation process, 

water content less than 100 PPM, NAS 6 cleanliness, low energy consumption,

 no change to oil properties. Contact us today for a free configuration 

recommendation and competitive factory-direct quotation within 24 hours.

Product characteristics