Removing dispersed liquids from gas streams, separating emulsified oil from water, or pulling fine contaminants out of chemical process fluids, these are the problems a coalescer filter cartridge is built to solve. At Brother Filtration, we engineer coalescer and separator cartridges for exactly these applications, covering everything from natural gas processing and refinery operations to pharmaceutical filtration and specialty chemical production.
Brother Filtration coalescer & separator cartridge series is built around surface-treated glass fiber and polyester coalescing media, designed at a structural level to promote droplet growth and efficient phase separation. Filtration precision reaches 0.1μm, and the five cartridge models we manufacture cover both liquid/liquid and liquid/gas separation across a wide range of process conditions.
Wide range of applications
High filtration accuracy
High dirt-holding capacity
Longer service life
Coalescer & Separator Cartridge
Five models, each built for a specific separation challenge. Here is what each one does and where it gets used.
SP1.0 Separator Filter Cartridge
The SP1.0 is a one-micron separator element designed for high-efficiency gas-phase applications where solid particle removal runs alongside liquid separation. Its multi-layer construction controls differential pressure buildup even at high gas velocities, making it suitable for continuous-duty inlet gas separation, ethylene processing streams, desiccant bed protection, and instrument gas clean-up. The SP1.0 is the more robust of the two separator models and covers applications requiring tighter contamination control.
SP2.0 Separator Filter Cartridge
Where API certification is not a process requirement, the SP2.0 delivers reliable water separation across a wide range of fluid process streams at a more economical operating cost. It handles fuels, light hydrocarbons, and process gas where the separation goal is dewatering rather than multi-contaminant removal. Maintenance is straightforward, and the SP2.0 is compatible with standard filter housings used across most industrial filtration setups.
CLL1.0 Coalescer Filter Cartridge-Liquid and Liquid
Liquid/liquid separation is a different engineering problem from gas filtration. The CLL1.0 is built for it. Glass fiber coalescing media captures and merges emulsified oil droplets from amine, alkali, acid, and urea solutions, handles lemon oil separation from alcohol-based mixtures, and removes organic compound contamination from alkaline pharmaceutical process fluids. Biotechnology and flavor/fragrance production facilities use this model regularly, as do chemical plants running amine scrubbing systems, where carryover control is critical for downstream equipment protection.
CLG1.0 Coalescer Filter Cartridge-Liquid from Gas
Natural gas often carries a fine mist of water droplets, hydrocarbon condensate, and compressor lube oil. The CLG1.0 is designed specifically to pull these submicron liquid particles out of the gas stream before they reach meters, regulators, or combustion equipment. Its coalescing media promotes droplet growth from submicron sizes to drainable droplets, and the element structure is optimized for the inside-out flow typical of gas-phase filter vessels. Feed coalescer applications in gas conditioning trains are a primary use case.
CLG2.0 Coalescer Filter Cartridge-Liquid from Gas
The CLG2.0 runs inside-out flow like the CLG1.0 but is engineered for higher-duty gas applications where both liquid and solid contaminant removal are required simultaneously. Compressor outlet protection is the most common application; it stops carryover oil and condensate from damaging downstream turbines or control systems. It is also used in fuel gas purification ahead of low-NOx burners, where clean gas directly affects emissions performance. The CLG2.0 handles heavier contamination loads and offers extended service intervals compared to standard coalescing elements.
What makes Brother Filtration so reliable
We can provide you with not only high-quality Coalescer & Separator Cartridge but also professional technical support, fast shipping time, and complete after-sales service. Our goal is to make the whole process worry-free for our customers.
Learn MoreFeatures of a Coalescer & Separator Cartridge
Brother Filtration Coalescer & Separator Cartridge series is competitive and useful. They can fulfill all kinds of needs in oil, water and other fluids.
- Filtration accuracy down to 0.1μm with multi-layer glass fiber and polyester coalescing media
- Specially treated fiber surfaces engineered for superior droplet affinity and coalescence efficiency
- High dirt-holding capacity supports extended service intervals in contaminated process streams
- Inside-to-outside flow path reduces inlet face plugging and maintains consistent differential pressure
- Compatible with chemical, flavor, fragrance, pharmaceutical, oil & gas, and petrochemical applications
- High flux density allows compact housing designs without sacrificing separation performance
- Customizable end-cap configurations and outside diameters for OEM and retrofit applications
- Stainless steel support structure provides dimensional stability across a wide temperature and pressure range
About our filtration technology
The liquid industry is never where we stop. Additionally, we are seeking for solutions for oil and air.
Learn MoreThe working principle of Coalescer & Separator Cartridge
Breaking emulsion to beat cell - interception - impact - affinity - coalescence - --Absorption
Floating Affinity: the inner surface of the oil droplets affinity together, under the action of specific gravity directly floating separation.
Coalescence: Small particles of suspended oil, coalesce into large oil beads under the action of oleophilic filter material.
Adsorption: The large oil beads are constantly trapped by the adsorption layer designed in the outer layer of the filter element to prevent secondary taking away.
Uplifting: Under the action of liquid same-sex mutual affinity, the oil with increased specific gravity quickly floats up to realize liquid-liquid separation.
Cartridge structure: The cartridge is designed to go in and out, and is composed of emulsion-breaking layer, agglomeration layer and adsorption and affinity layer.
The Coalescer & Separator cartridge is made of specially treated glass fiber and other coalesce materials as medium, which can agglomerate the tiny water droplets dispersed in the turbine oil into larger water droplets, and the agglomerated water droplets are sunk to the lower water accumulation tank under the action of gravity and the flowing impact of oil, and released by the water release valve.
The separator cartridge is composed of special chemically treated stainless steel mesh, which has good hydrophilic and hydrophobic properties, allowing oil to pass smoothly while effectively preventing water droplets from passing through to achieve effective dewatering effect.
If the Coalescer & Separator cartridge does not suffer serious physical or chemical damage, it can be used for a long time without replacement, thus greatly reducing operating costs.
Our Liquid Capabilities
Brother Filtration has provided quality liquid filtration products to process industries around the world. From pre-filtration to final – and from low capacity to high – when you think purity, think Brother Filtration.
Talk to usDifference Between Coalescer and Separator Filters
These two filter types are often installed together in the same vessel, which causes some confusion about where one ends and the other begins. They perform distinct jobs. A coalescer filter handles the collection phase. It captures dispersed microdroplets from a fluid stream and merges them into droplets large enough to separate under gravity. The coalescer element sits upstream and takes the initial contamination load.
A separator filter handles the rejection phase. Once the liquid droplets have been grown to a sufficient size by the coalescer upstream, the separator’s hydrophobic or oleophobic media prevents them from re-entering the clean stream. Separator cartridges are typically installed downstream and rely on surface chemistry rather than mechanical filtration to do their job.
In a complete filter-separator system, both types work in sequence. The coalescer grows the droplets; the separator stops them from passing through. Running just a coalescer without a downstream separator is common in lower-duty applications. Running a separator without a coalescer upstream is not recommended, as the separator media becomes saturated quickly if it’s receiving raw, finely dispersed contamination.
| Property | Coalescer Filter | Separator Filter |
| Primary Function | Merges small droplets into larger ones | Blocks coalesced droplets from re-entering the stream |
| Position in System | Upstream (first stage) | Downstream (second stage) |
| Media Type | Oleophilic or hydrophilic glass fiber/polyester | Hydrophobic or oleophobic-treated mesh/fiber |
| Flow Direction | Inside-out (typical) | Outside-in (typical) |
| Typical Application | Gas dehydration, oil-water pre-separation | Final water/oil rejection in fuel & gas systems |
| Replacement Frequency | Higher (primary contamination load) | Lower (cleaner service conditions) |
Industry Application
Coalescer & Separator Cartridge: The Ultimate FAQ Guide
The following are common frequently asked questions (FAQ) about Coalescer and Separator Cartridge, along with their brief answers.
How do Coalescer Filters handle emulsions in industrial applications?
Coalescer Filters are effective in breaking down emulsions by promoting the aggregation of dispersed liquids into larger droplets, which facilitates easier separation from the continuous phase.
What are the considerations for integrating coalescer and separator filters into existing filtration systems?
Integrating coalescer and separator filters into existing systems requires evaluating compatibility with flow rates, pressure conditions, and filtration requirements. Proper installation and system adaptation ensure seamless operation, optimal performance, and minimal downtime.
How do Coalescer Filters compare to other types of liquid-liquid separation methods?
Coalescer Filters are often compared with methods like centrifuges or settling tanks. They excel in applications where continuous separation is required without the need for chemical additives or significant energy consumption.
How does the design of Separator Filters differ based on the specific application?
Designs may vary based on whether the application involves removing solids, liquids, or both from gas or vapor streams. Factors such as filter media type, pore size, and filtration mechanism are tailored to meet these specific needs.
How do operating conditions such as temperature and pressure affect the performance of Coalescer Filters?
Operating conditions can influence the efficiency and effectiveness of Coalescer Filters. Higher temperatures might affect the viscosity of liquids, while varying pressures can impact the flow rate and the ability of the filter to separate liquids effectively.
What is a coalescer and separator cartridge?
A coalescer and separator cartridge is a filtration device used in various industrial processes to separate immiscible liquids, such as oil and water, by promoting the coalescence of small droplets into larger ones and then separating them from the main stream.
How does a coalescer filter work?
A coalescer filter cartridge typically contains a media that encourages the merging of fine liquid droplets into larger ones. As the mixture passes through the cartridge, the smaller droplets combine to form larger ones, which are then easier to separate from the bulk liquid.
What is the difference between cartridge filter and coalescing filter?
Cartridge filters eliminate solid particulates from gas or liquid streams, while coalescing filters target liquid aerosol particles in gas or air streams. Additionally, coalescing and separator cartridges address the removal of trace water from a liquid hydrocarbon process stream.
What are the different types of media used in coalescer filter and separator filter?
Coalescer filter and separator filter can use various types of media such as cellulose, fiberglass, polymeric materials, and specialty coatings, each offering different properties suited to specific applications.
Do coalescer and separator cartridges require pre-filtration?
Pre-filtration may be necessary in some cases to remove large particulate contaminants before the liquid enters the coalescer and separator cartridge. This helps prevent fouling and extends the lifespan of the cartridge.
How often should coalescing filter and separator filter be replaced?
The replacement frequency depends on various factors such as the operating conditions, contaminant levels, and cartridge specifications. It is recommended to follow the manufacturer’s guidelines or carry out regular maintenance inspections to determine the replacement intervals.
Are there any limitations to the use of coalescing filter element and separator filter element?
While coalescer and separator elements offer effective liquid separation, they may have limitations in handling extremely high flow rates, viscous liquids, or certain types of contaminants. Consulting with filtration experts can help in determining any limitations specific to your application.
Are there different types of water coalescer filter and water separator filter available?
Yes, there are different types of Coalescer and Separator filters available to suit specific applications. Brother Filtration provides you with five types, including SP1.0 separator filter, SP2.0 separator filter, CLL1.0 coalescer filter, CLG1.0 coalescer filter, and CLG2.0 coalescer filter.
Can coalescing filters handle high-pressure gas streams?
Yes, there are coalescing filters specifically designed to withstand high-pressure gas streams commonly found in industrial applications. These filters are constructed using robust materials and are engineered to withstand the pressure without compromising performance.
Can separator filters be used in conjunction with other filtration technologies?
Yes, separator filters can be integrated into multi-stage filtration systems alongside other filtration technologies such as coalescing filters, particulate filters, and adsorption filters to achieve higher levels of contaminant removal and purification.
