Filtermart™ Separator Filters

Separator Cartridges for Industrial Applications

A separator cartridge is the replaceable element inside a separator housing. As it loads with separated oil, water, or solids, differential pressure across the element rises; once it reaches the manufacturer's recommended limit, the cartridge must be replaced to maintain separation efficiency.

• How it works: Fluid or gas enters the housing and passes through layered, often hydrophobic-coated media. Fine fibers encourage small droplets to coalesce into larger ones, which then drain away or get thrown outward by centrifugal force, leaving a clean, dry stream on the outlet side.
• Replacement considerations: Match the cartridge to your housing's exact dimensions, thread or flange configuration, micron rating, and maximum operating pressure and temperature. Using an ill-fitting or incorrectly rated separator cartridge is one of the most common causes of premature separator failure and liquid re-entrainment.
• OEM and cross-reference numbers: Most separator cartridges can be matched to an OEM or aftermarket equivalent using the part number stamped on the old element. See the cross-reference section below for commonly searched numbers.
• Applications: Separator cartridges are used in compressed air systems, natural gas processing, fuel systems, oil and gas manufacturing, and water treatment loops, anywhere two phases need to be reliably separated under continuous operating conditions.

Types of Separator Filters We Stock

Separator filters are built for specific phase-separation jobs. Common types include:

• Air/oil separator filters: Remove oil aerosol and mist from compressed air lines and rotary screw compressor systems.
• Fuel/water separator filters: Strip entrained water from diesel and other fuels before it reaches injectors or engines.
• Gas/liquid separator filters: Remove liquid droplets and condensate from natural gas and process gas streams.
• Coalescing separator filters: Use fine fiber media to merge small droplets into larger ones for efficient drainage.
• Centrifugal separators: Use spin-induced force to throw heavier liquid or solid particles outward from the gas core.
• Horizontal filter separators: Housing-style separators typically used on higher-flow gas and liquid lines where a horizontal vessel orientation fits the process layout.

Browse Filtermart's full separator filter collection to see air/oil, liquid, and other separator types available to order.

Durable Separator Filter Performance & Benefits

A properly maintained separator filter does more than remove contamination; it protects your whole operation. Key benefits include:

• Protecting downstream equipment: Keeps oil, water, and solids out of compressors, pumps, valves, and turbines.
• Reducing contamination: Maintains process and product purity across air, gas, fuel, and liquid systems.
• Maintaining system efficiency: Clean separation keeps flow rates, pressure drop, and heat transfer within spec.
• Reducing unplanned maintenance: Catching contamination at the separator prevents costlier failures further downstream.
• Extending component life: Less wear on pumps, valves, and compressors means longer service intervals and lower long-term cost.

Choose the Right Separator Filter Replacement

Not every separator cartridge is interchangeable, even when two elements look similar. Before ordering a separator filter replacement, it helps to confirm:

• The OEM part number stamped on your current element or housing
• Micron rating required for your application (fine coalescing vs. bulk mechanical separation)
• Operating pressure and temperature range of your system
• Whether the housing is a spin-on, cartridge-style, or bag-style configuration

Overlapping part-numbering conventions across manufacturers make it easy to order the wrong element. As an industrial separator filter supplier, FilterMart's industrial filters catalog and cross-reference database confirm the correct match before you buy. Send your old part number through the FilterMart contact and quote page for a quote on replacement separator cartridges.

Separator Filter Cross-Reference

With an existing element in hand, the fastest way to find the correct replacement is by cross-reference. Search using any of the following:

• The OEM part number stamped on the housing or cartridge
• Your existing filter number, even if it's a competitor's part
• The original equipment manufacturer or brand name
• The filter type, mechanical, coalescing, or centrifugal
• Your application, compressed air, fuel, gas processing, or water treatment

Part number not listed? Search directly using the FilterMart search tool. Most OEM and aftermarket separator numbers, including Moeller, Messer, Separmatic Systems, and Matrix Separations equivalents, can be matched to an in-stock replacement from our database of over a million cross-references.

Why Buy Separator Filters From FilterMart?

Have an OEM part number? Search it directly on our cross-reference search tool to find your exact replacement in seconds.

Don't know the replacement? Send FilterMart your old filter number through the contact and quote page, and our team will confirm the correct replacement separator cartridge for your application fast.

• OEM-standard construction: Multi-stage media, hydrophobic coatings, and heavy-duty cages built to original specifications.
• Extensive cross-reference support: Find the right replacement even if you only have an old or partial part number.
• Wide brand coverage: From Donaldson filters and Hydac filters to Parker filters, browse our full filter brands directory for more.
• Housings and accessories: Pair your element with the correct filter housing for a complete, leak-free install.
• Separator filter wholesale pricing: Volume discounts available on request for distributors and high-volume plants.

Explore the full separator filters collection, shop air-oil separator filters or liquid separator filters, or browse the wider industrial filters range. Learn more about FilterMart, an industrial separator filter supplier serving the gas, oil, and power generation sectors.

Frequently Asked Questions

What is a separator filter used for?

A separator filter removes one phase of material from another, such as oil droplets from compressed air, water from fuel, or solids from liquid, protecting downstream equipment from contamination, corrosion, and premature wear.

How is a separator cartridge different from a standard filter?

A standard filter is built to trap particulate matter. A separator cartridge is engineered specifically for phase separation, using coalescing media, hydrophobic coatings, and rigid support structures to keep separated liquid from re-entraining into the stream.

How do I find the right replacement separator filter for my equipment?

Match the OEM part number on your old element against our cross-reference database. Search by part number, existing filter number, manufacturer, filter type, or application on theFilterMart search page, or contact our team with your old number for confirmation.

Do you supply aluminum separator filters and other industrial-grade materials?

Yes! FilterMart stocks separator elements across a range of housing and media types, including aluminum body separator filters, to match the pressure, temperature, and flow requirements of your specific application.

Are Filtermart separator filters compatible with major OEM brands?

Yes. Our catalog covers cross-references for major manufacturers and OEM brands, so most existing housings and systems can be matched to an equivalent or direct-fit separator element without modifying your equipment. Browse our fullbrands directory to see supported manufacturers.

How often should a separator filter element be replaced?

Replacement intervals depend on system load, contamination levels, and operating pressure, but most industrial separator elements are inspected on a scheduled maintenance cycle and replaced as soon as differential pressure rises or separation efficiency starts to drop, rather than waiting for a failure.

Do you offer separator filters at wholesale pricing?

Yes. Distributors and high-volume plants can request separator filter wholesale pricing directly through ourvolume discountspage or by contacting our sales team.

Can I order separator filters online?

Yes. The full separator filter range is available to browse and order directly through theBuy Separator Filters Online page, with volume pricing available for distributors and larger plants on request.