Filtermart™ Coalescer Filters : Air

This is exactly the problem air coalescer filters are built to solve. Coalescing technology captures fine liquid droplets and merges them into larger drops that drain safely out of the system, so contaminants are removed before they reach downstream equipment.

FilterMart stocks a full range of compressed air coalescers and replacement elements across multiple media types, along with tools to search by OEM brand, OEM part number, or FMC part number, making it straightforward to find a compatible filter for almost any installed system.

How Do Our Air Coalescer Filters Work?

Filtermart air coalescer elements use a multi-layered construction that combines high-capacity particulate trapping with a dedicated coalescing matrix and an outer drainage sleeve. As air moves through the layers, aerosols and moisture are pulled out of the flow and channeled toward the drainage sleeve, where they collect and drain away instead of re-entering the airstream. This layered design helps keep differential pressure stable while maintaining strong filtration performance across the element's service life.

• Multi-layer coalescing matrix for fine aerosol and oil mist capture
• Outer drainage sleeve that reduces the risk of re-entrainment
• Corrosion-resistant end caps built for long-term durability
• Reinforced inner support cores that resist collapse under sudden pressure surges
• Stable differential pressure across the filter's rated service life

Why Compressed Air Systems Need Filtermart Coalescing Filtration?

Untreated compressed air is one of the most damaging inputs a plant can run through its equipment. Suspended oil and moisture attack pneumatic cylinders, interfere with control valves, and can affect finished products in industries like food processing, pharmaceuticals, and precision manufacturing.

Installing the right compressed air filtration solution helps reduce oil aerosols, captures fine liquid droplets, and improves compressed air cleanliness. This protects downstream equipment and can lower energy costs by minimizing unnecessary pressure drop across the system.

Types of Air Coalescer Filters We Offer

FilterMart's Air Coalescer category is organized into four main filter types, each suited to a different combination of flow rate, contamination load, and particulate sensitivity:

Borosilicate Glass Coalescer Filters

Borosilicate glass coalescer filters are designed for capturing fine aerosols and oil mist in compressed air and gas systems. The fine-fiber glass media offers high efficiency for demanding oil-mist removal applications.

Borosilicate Particulate Filters

Borosilicate particulate filters combine particulate control with liquid coalescing and are suitable for applications requiring high-temperature performance alongside fine particulate control.

Paper Particulate Filters

Paper particulate filters are typically constructed with pleated cellulose media, offering a cost-effective option for general-duty particulate filtration applications.

Liquid Coalescing Filters

Liquid coalescing filters are used where liquid contaminants need to be separated from process streams, extending coalescing technology beyond compressed air into liquid-in-liquid separation applications.

Find the Right Replacement Air Coalescer Filter

When replacing an existing filter element, the OEM part number is often the fastest way to identify a compatible replacement. FilterMart allows customers to search by OEM brand name, OEM part number, or FMC part number to simplify replacement filter sourcing across hundreds of available listings in this category.

Finding the correct replacement filter starts with the existing part number, whenever possible. Customers should also verify dimensions, media type, micron rating, flow direction, and operating requirements before ordering. A visually similar filter may not provide the same fit or filtration performance. FilterMart's cross-reference database covers over 1,137,727 verified part numbers, so a compatible element can usually be identified even when the original brand isn't in stock.

Why Buy Air Coalescer Filters from FilterMart?

FilterMart maintains one of the industry's largest cross-reference databases, covering thousands of filtration products across major OEM brands. That means you're not limited to a single manufacturer's catalog; you can find a compatible, quality-tested element regardless of what was originally installed.

Combined with available volume discounts on bulk orders and a catalog spanning every major category of industrial filters, including industrial air filters, separator filters, and bag filters, FilterMart is built to be a single, dependable source for plant maintenance teams and distributors alike. You can also apply to become a filter distributor if you're sourcing at scale.

Frequently Asked Questions

What is the difference between an air coalescer filter and a standard air filter?

A standard air filter traps solid particulate, dust, rust, and scale from an airstream. An air coalescer filter targets liquid contamination instead: it merges microscopic oil and water droplets into larger drops so they can drain out of the system, rather than blocking solid particles.

How often should I replace my air coalescer element?

Replacement intervals depend on contamination load, duty cycle, and manufacturer recommendations. Most plants monitor differential pressure and replace the element once the pressure drop rises noticeably above the baseline reading or once it reaches the recommended changeout point.

Can I search for a replacement filter using my existing part number?

Yes. You can search by OEM brand name, OEM part number, or FMC part number to find a compatible replacement element without needing to know every technical specification in advance.

Which coalescer media should I choose: borosilicate glass or paper particulate?

Borosilicate glass media generally offers finer filtration for demanding oil-mist removal, while paper particulate media is a more economical option for general-duty compressed air lines with lower contamination loads. Confirming your application's micron rating and flow requirements will help narrow the choice.

What specifications should I check before ordering a replacement element?

Confirm the micron rating, media type, flow direction, outer and inner diameter, length, end-cap configuration, seal material, and maximum operating temperature. Matching these to your existing housing helps ensure proper fit and performance.

Where can I buy air coalescer filters online?

You can browse and order Filtermart air coalescer filters and replacement elements directly through this page, search by OEM or FMC part number, or contact the FilterMart team for help identifying the right replacement for your system.