What Facet Filtration does

Facet Filtration, founded in 1943 in Tulsa, Oklahoma, designs and manufactures high-performance fuel and fluid filtration and separation systems for mission-critical applications. Its portfolio spans aviation (filter cartridges, housings, refueling systems, microfilters qualified to Energy Institute standards 1581, 1590, and 1588), power generation (TURBO-TOC steam turbine oil conditioning systems and replacement elements), industrial/heavy equipment (diesel filtration cartridges, housings, integrated systems, and TELEFLO flow indicators), marine (cartridges, ASME-coded housings, lube oil conditioners, sewage treatment plants), and water/wastewater treatment (oil-water and bilge water separators powered by MPak coalescing plates). Core proprietary technologies include MPak oleophilic coalescing plates that achieve 5 ppm effluent under EN-858 Class 1, TURBO-TOC systems that remove 100% of free and emulsified water from turbine oil to below 100 ppm, hydrophobic FWB water-barrier cartridges that shut down flow on water detection, and CIF crushable/incinerable filters that reduce disposal volume to 20% of original size. Facet operates US manufacturing in Stilwell, Oklahoma and Greensboro, North Carolina, and engineering/R&D and manufacturing in A Coruña, Spain, with regional sales offices in France, Italy, the Netherlands, the UK, the UAE, and Malaysia.

Facet monetizes through a hybrid equipment-plus-consumables model: one-time sales of filtration cartridges, housings, vessels, and custom-engineered systems, plus a recurring replacement-parts stream that accounts for approximately 70% of revenue and is anchored by long-lived installed bases at airports, refineries, power plants, naval fleets, and industrial sites. Revenue is supplemented by engineering and field services covering process design, vessel evaluation, feed studies, element change-out, on-site training, and troubleshooting. The company sells exclusively through direct enterprise sales via technical sales engineers and in-region offices, targeting commercial and military aviation, defense (NATO PECAL/AQAP 2110 supplier), oil and gas refining, power generation, marine, and heavy equipment operators. Facet was acquired by Donaldson Company (NYSE:DCI) in May 2026 for approximately $829 million in an all-cash transaction, integrating it into Donaldson's Industrial Solutions portfolio.

Name

Facet Filtration

Legal name

Facet Filtration

Website

https://facetfiltration.com

Company type

Private

Founded year

1943

Operating status

Acquired

Headcount range

251–500 employees

Short description

Facet Filtration, founded in 1943 and now a Donaldson subsidiary, manufactures high-performance fuel and fluid filtration systems — including EI-qualified aviation cartridges, TURBO-TOC turbine oil conditioners, and MPak oil-water separators — for airports, defense forces, refineries, power plants, marine operators, and industrial customers worldwide.

Ownership category

akta.pro rank

Headquarters

HQ city

Tulsa

HQ country

United States

HQ region

North America

Offices10 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Technology or R&D, Marketing or Sales, Infrastructure

Revenue model

1. Filtration Equipment and Systems Sales: Primary revenue from sale of filtration cartridges, housings, vessels, and complete filtration systems. Includes standard products and custom-engineered solutions for aviation, marine, industrial, and power generation applications. Products include coalescers, separators, microfilters, water barriers, clay treaters, and integrated filtration systems.
2. Replacement Parts and Consumables: Recurring revenue from replacement filter cartridges and elements. Approximately 70% of revenue comes from recurring replacement part sales, providing predictable recurring revenue stream. Includes TURBO-TOC elements, industrial filter cartridges, and aviation filter cartridges.
3. Engineering and Field Services: Services including process design consultation, existing vessel evaluation, feed studies, new vessel design, element change-out assistance, process observation, on-site training, and troubleshooting support.

Pricing tiers

Go-to-market motion1 record

Distribution channels3 records

Marketing channels5 records

Core offering

Facet Filtration manufactures and sells high-performance fuel and fluid filtration equipment — including filter cartridges, housings, vessels, complete filtration systems, oil-water separators, bilge water separators, and steam turbine oil conditioning systems — for aviation, power generation, marine, industrial, and water/wastewater applications. The product portfolio spans Aviation Filter Cartridges/Housings/Systems, Turbo-TOC Systems and Elements, Industrial Filter Cartridges/Housings/Systems, Flow Indicators, Marine Filter Cartridges/Housings/Systems, and Oil-Water and Bilge Water Separators, with approximately 70% of revenue coming from recurring replacement cartridge sales.

Product overview

Facet Filtration is a global leader in high-performance fuel filtration and separation solutions, offering an integrated portfolio of filtration products across five primary categories: Aviation (filter cartridges, housings, and complete filtration systems), Power (Turbo-TOC steam turbine oil conditioning systems and replacement elements), Industrial (filter cartridges, housings, filter systems, and flow indicators), Marine (filter cartridges, housings, and complete filtration systems), and Water/Wastewater Treatment (oil-water separators and bilge water separators). The portfolio is anchored by proprietary technologies including MPak coalescing plates for oil-water separation achieving 5 ppm effluent, Turbo-TOC systems for turbine oil conditioning with 100% water removal, and a comprehensive range of EI-qualified aviation filter cartridges and housings. Products serve mission-critical applications in aviation fueling, power generation, heavy equipment, marine, and wastewater treatment industries.

Differentiator

Problem solved

Functional benefit

Brands

• TURBO-TOC: Steam turbine oil conditioning systems for power generation applications, providing high-efficiency water removal from turbine oil. Available in KL Series (stationary) and KLP Series (portable) configurations.
• Kaydon Filtration
• MPak
• Fuel-Gard
• SuperFlex
• Go-No-Go
• CIF Series
• TELEFLO

Products and services

• Aviation Filter Cartridges Solids removal, coalescer, separator, water barrier, and clay treater cartridges for aviation fuel filtration, qualified to EI 1581, EI 1590, and EI 1588 standards for commercial and military aviation fueling customers.
• Aviation Filter Housings Filter/water separators, microfilter housings, multi-purpose housings, and bulk treaters engineered to EI 1581, EI 1596, and ASME standards for aviation fuel filtration systems at airports, fueling depots, and military operations.
• Aviation Filtration Systems Complete engineered aviation filtration systems including portable refueling packages, JP-5 fuel treatment systems, refueling containers, and tactical refueling systems for commercial and military aviation applications.
• Turbo-TOC Steam Turbine Oil Conditioning Systems High-efficiency steam turbine oil conditioning systems that remove 100% of damaging water from turbine oil, reduce total water content below 100 ppm, and achieve ISO 15/13/11 cleanliness levels; available in KL Series stationary systems (up to 24,000 gallon reservoirs) and KLP portable carts (variable flow rates up to 125 gpm), serving power generation plants, offshore wind, and refinery operators.
• Turbo-TOC Replacement Elements Replacement filtration elements for Turbo-TOC systems, including particulate filters and coalescer/separator elements for particle and water removal from turbine oil; recurring replacement consumables sold to installed-base power generation customers.
• Industrial Filter Cartridges Heavy-duty coalescer, separator, absorptive, and microfilter cartridges for mining, construction, agriculture, and bulk fluid processes, including CR/CC/CB, SP/SS/ST, Go-No-Go, FIWA, and CIF Series products for industrial and heavy equipment operators.
• Industrial Filter Housings Custom-engineered industrial filter housings including multi-purpose vessels (SuperFlex, VF-21/22SB Series), liquid/liquid separation vessels (VCS, HP Series), liquid filtration housings (M Series, 981 Series), and adsorptive filtration housings (F Series clay treater).
• Industrial Filter Systems Engineered industrial filtration systems including the KP Series, providing integrated solutions for reliable fuel, oil, and water separation in construction, mining, agriculture, and bulk industrial applications.
• Flow Indicators and Lubrication Oilers (TELEFLO) Industrial flow indicators and lubrication oilers including TELEFLO Model 816BC flow switch, Model 4B gravity oilers, Model 902A pressure oilers, and Model 825 overflow sights for lubrication monitoring and flow indication on industrial equipment.
• Marine Filter Cartridges Coalescer, separator, absorptive, and microfilter cartridges designed for onshore, offshore, and onboard marine filtration, including EB Series and Fuel-Gard Monitor cartridges for commercial vessels, offshore platforms, and naval defense customers.
• Marine Filter Housings Custom marine filter vessels and housings engineered to ASME Code Section VIII Div. 1 standards, including multi-purpose housings, liquid/liquid separation vessels, liquid filtration housings, and basket strainers for marine and offshore applications.
• Marine Filtration Systems Complete marine filtration systems including turbo-generator fuel/oil modules, V Series lube oil conditioners, and STP/VTP Series sewage treatment plants for commercial vessels, offshore platforms, and naval applications.
• Oil-Water Separators Oil-water separation systems powered by MPak coalescing plate technology, achieving EN-858 Class 1 certification with effluent as low as 5 ppm, for industrial wastewater, stormwater, and marine applications meeting EU, EPA, and IMO requirements.
• Bilge Water Separators (CPS Series) Compact bilge water separation systems (CPS 3.2E + EMB, CPS 10B MKIII + EMB, CPS B MKIII + EBM) combining MPak coalescing plates with ceramic membranes for <5 ppm effluent, certified to IMO MEPC.107(49) for commercial vessels, offshore platforms, and naval applications.

Quantifiable outcome

• 5 ppm effluent levels achieved with MPak technology meeting EN-858 Class 1 certification
• +4 more outcomes

Named customers6 records

Segments5 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature5 records

Partnerships

One partnership is on record.

• Kaydon FiltrationcoreStrategic or Co-development Partner · 1 January 2021Kaydon Filtration and Facet joined forces in 2021 to provide comprehensive filtration solutions. Kaydon brought steam turbine oil conditioning expertise (TURBO-TOC systems) while Facet contributed aviation and industrial filtration capabilities. Kaydon products are now under the Donaldson Facet brand.

Scale indicators6 records

Recent moves5 records

Expansion highlights5 records

Direct peers

• Velcon Filters: Specializes in aviation and industrial fuel filtration, including EI-qualified products for jet fuel handling. Velcon is one of the few direct competitors to Facet in the highly regulated aviation fuel coalescer/separator market, serving airports, military, and industrial customers with similar cartridge and vessel offerings.
• HYDAC International: Specialist in hydraulic and fluid filtration, condition monitoring, and fluid handling. HYDAC competes with Facet in industrial oil filtration, oil-water separation, and turbine lube oil conditioning, serving similar power generation and heavy industrial customers.
• Kaydon Filtration: Steam turbine oil conditioning specialist whose products (TURBO-TOC) joined Facet in 2021 and now sit under the Donaldson Facet brand. Kaydon was effectively merged into Facet, but its technology and customer relationships remain a directly comparable reference point for power-generation lube oil filtration.

Broad incumbents

• Pall Corporation: Industrial filtration and separation leader (now part of Danaher's Biotech segment legacy). Pall overlaps directly with Facet in aviation fuel filtration, oil/water separation, and industrial fluid purification, with a broader product portfolio spanning bioprocessing, microelectronics, and aerospace.
• Donaldson Company: Acquirer of Facet and a major industrial filtration player across aerospace, defense, and industrial markets. Direct overlap with Facet in aviation and industrial filtration; the acquisition was driven by Donaldson's strategy to expand high-performance fuel and fluid capabilities for aerospace and defense customers.
• Parker Hannifin: Diversified motion and control technologies company with a significant filtration group. Parker competes with Facet in industrial and aerospace fluid filtration, and in oil-water separation and hydraulic/lube oil conditioning, though its portfolio extends well beyond Facet's aviation and power focus.
• MANN+HUMMEL: Global filtration specialist serving automotive, industrial, and life sciences. MANN+HUMMEL competes in industrial fluid filtration and oil-water separation markets adjacent to Facet's product lines, though with a heavier weighting toward automotive OEM filtration.
• Eaton: Power management company with a substantial filtration division serving aerospace, military, and industrial hydraulics. Eaton competes with Facet in aviation and industrial filtration, particularly in hydraulic fluid and lube oil filtration for aerospace and heavy equipment.
• Filtration Group: Privately held global filtration company and former parent of Facet (2018-2026). Filtration Group competes in industrial, life sciences, and process filtration with multiple brands, and was the seller of Facet to Donaldson — providing direct portfolio overlap and competitive context.

Others

• Camfil: Global leader in air filtration and cleanroom solutions. Camfil is adjacent rather than direct: it focuses on air-quality filtration for buildings, life sciences, and cleanrooms rather than aviation fuel and fluid handling, but shares the broader industrial filtration category and customer base.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

• YouTubeyoutube.com/channel/UCjjSqVy8a0DBJXoAyyGbUaA
• LinkedInlinkedin.com/company/facetfiltration

Compliance3 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Facet Filtration