What Clark-Reliance does

Clark-Reliance Corporation is a privately held, multidivisional industrial instrumentation manufacturer headquartered in Strongsville, Ohio. Founded in 1884, the company designs, manufactures, and distributes level indication and control products (boiler level gages, magnetic level indicators, level switches, magnetostrictive transmitters, sight flow indicators) and filtration and separation equipment (mechanical separators, coalescing filter vessels, oil and gas purification systems, transformer oil and SF6 service equipment). The portfolio is marketed through eleven retained sub-brands including Reliance, Jerguson, Jacoby-Tarbox, Anderson (Filter Elements, Separators, HYCOA transfer valves), Oil Filtration Systems, Enervac International ULC, Ernst Instruments, GPImeters, and ICON Management Systems, with products sold into power generation, oil & gas production and midstream, refining, chemical processing, pulp and paper, pharmaceutical and biotech, food and beverage, mining/metals, and power distribution customers across more than 120 countries.

The underlying technology base spans ASME B31.1/B31.3-rated tempered borosilicate sight glass assemblies, proprietary FlashProof oversized magnetic chambers for boiling/flashing services, bi-color LED-illuminated boiler water gages (Simpliport 180) with 180-degree visibility, hygienic USP Class VI chromatography bubble traps, and 99.98%-efficient coalescing filter elements for 0.3-micron and larger particles. The company offers AccuBlend CFD, an in-house computational fluid dynamics modeling service bundled with tank eductor and agitator sales. Distribution is anchored by direct enterprise field sales supported by application engineers, a regional rep-locator network, European Assembly Centres, Rapid Response Centers, and a direct online parts portal.

The business model is hardware-dominant capital-equipment and aftermarket-parts revenue, sold quote-by-quote to enterprise customers with technical-inquiry and RFQ funnels, complemented by bundled engineering and CFD services. Pricing is not publicly disclosed; the company sells through custom-engineered solutions, project specification, and replacement-parts purchasing. Geographic dispersion and the multi-decade acquisition roll-up strategy indicate a strategy of consolidating fragmented niche industrial instrumentation categories under one privately held corporate umbrella.

Name

Clark-Reliance

Legal name

Clark-Reliance Corporation

Website

https://clarkreliance.com

Company type

Private

Founded year

1962

Operating status

Operating

Headcount range

101–250 employees

Short description

Clark-Reliance Corporation, founded 1884 and headquartered in Strongsville, Ohio, is a privately held multidivisional manufacturer of industrial level indication and control instrumentation and filtration and separation equipment, serving power generation, oil and gas, refining, chemical, pharmaceutical, food and beverage, and pulp and paper customers in over 120 countries through eleven retained sub-brands.

Ownership category

akta.pro rank

Product category

Industrial Instrumentation — Level Indication & Control and Filtration & Separation

NAICS

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables (334513)

SIC

Industrial Instruments For Measurement, Display, And Control (3823)

akta.pro primary industry

Process Automation Instrumentation & Control (DCS, Valves, Actuators, Analyzers) (IMAHAHAM)

akta.pro secondary industry

Analytical Instruments & Chromatography Systems (HLAGAIAA)

Keywords

• Industrial level instrumentation
• Boiler trim controls
• Magnetic level indicators
• Filtration separation equipment
• Sight flow indicators

Headquarters

HQ city

Strongsville

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Industrial Instrumentation Products: Sale of level indication and control instrumentation including glass level gages, magnetic level indicators, level switches, transmitters, sight flow indicators, and associated components. Products are sold as capital equipment with project-based and replacement parts purchasing patterns.
2. Filtration and Separation Equipment: Sale of filter elements, separators (vane, centrifugal, coalescing vessels), oil purification equipment, and gas servicing equipment. Includes both standard products and custom-engineered solutions for specific applications.
3. Technical Services and Support: Application engineering support, technical inquiry handling, custom CFD analysis for mixing applications, and custom instrumentation solutions. Services are bundled with product sales and consultation engagements.

Go-to-market motion2 records

Distribution channels4 records

Marketing channels8 records

Core offering

Clark-Reliance designs, manufactures, and distributes industrial level indication and control instrumentation (glass level gages, magnetic level indicators, level switches, magnetostrictive transmitters, boiler trim controls, LED illuminators) and sight flow indication products, alongside filtration and separation equipment (vane/centrifugal separators, coalescing filter vessels, transformer oil and fuel purification systems, SF6 gas servicing equipment). Offerings are sold under multiple legacy brands (Reliance, Jerguson, Jacoby-Tarbox, Anderson, Oil Filtration Systems, Enervac, Ernst Instruments, GPI Meters, ICON) to power generation, oil & gas, refining, chemical, pulp & paper, pharmaceutical/biotech, food & beverage, and mining/metals facilities in 120+ countries. The portfolio combines standard catalog products with custom-engineered, code-compliant solutions (ASME B31.1/B31.3, NACE MR-01-75, USP Class VI, hazardous-location) backed by application engineering and CFD-based mixing analysis.

Product overview

Clark-Reliance is a multidivisional corporation providing level indication & control and filtration & separation products and services globally. The company operates under multiple sub-brands: Reliance (boiler trim controls including Simpliport 180 bi-color gages, LevelMax two-instrument assemblies, and DuraStar LED illuminators), Jerguson (liquid level measurement including FlashProof Magnicator magnetic level indicators, NightStar illuminators, SAS-16 snap-action switches, and JMT magnetostrictive transmitters), Jacoby-Tarbox (sight flow indicators, sight windows, Hy-Trap hygienic bubble traps, in-tank eductors, and AccuBlend CFD analysis services), and Anderson (mechanical separators, coalescing filter vessels, and filter elements). The product portfolio serves power generation, refining, chemical processing, pulp & paper, pharmaceutical, food & beverage, mining, and oil & gas industries across over 120 countries.

Differentiator

Problem solved

Functional benefit

Brands

• Reliance: Boiler trim controls including gages, valves, columns and indicators - the most widely-recognized and trusted line of boiler trim controls in the industry
• Jerguson
• Jacoby-Tarbox
• Anderson
• Oil Filtration Systems
• Enervac
• ICON Management Systems

Products and services

• Simpliport 180 Bi-Color Ported Water Gage Boiler water level glass gage providing wide-angle bi-color (red/green) LED-illuminated water level indication rated to 3000 PSI for power-generation and high-pressure steam boiler operators needing direct-reading local level visibility.
• LevelMax Two Instrument Assembly Multi-technology boiler level monitoring assembly combining a Simpliport 180 or Flat Glass Gage with a Smart Level Eye-Hye electronic indicator to deliver both local and remote level indication in a compact, ASME-compliant package.
• Jerguson FlashProof Magnicator Magnetic Level Indicator Magnetic level gage with an oversized 3-inch Schedule 40 chamber and internal guide rods designed to prevent float binding in boiling fluids, flashing vapors, and dirty or viscous services, allowing gage flushing without float removal.
• Jerguson SAS-16 Snap-Action Switch Magnetic point level switch using a tri-magnet snap-action design where switching is achieved through magnetic repulsion, providing positive interlock switching for level alarm applications.
• JMT Series Magnetostrictive Transmitter Continuous level transmitter with a dual-entry enclosure design, HMI display showing a real-time waveform graph, HART 7 compatibility for integration into existing control systems, and a superior signal-to-noise ratio.
• Anderson Filter Elements and Separators (Vane, Centrifugal, Coalescing Vessels) High-performance filtration products including vane and centrifugal mechanical separators and coalescing vessels with specialized filter elements for removing tramp oil, water mists, and oil aerosols from gas streams in midstream and process gas applications.
• Anderson Coalescing Filter Vessels (ACF-12-36-725 series) Coalescing filter vessels designed to remove oil and liquid contaminants from compressed air and gas systems, protecting turbine operations and critical downstream equipment with absolute-rated media achieving 99.98% removal efficiency for particles 0.3-micron and greater.
• Anderson Vane Gas Separator (AVGS) Separator internal for geothermal power plants that purifies and removes moisture from geothermal steam before reaching steam turbines, enhancing efficiency and reducing maintenance costs.
• DuraStar Flat Glass Gage LED Illuminator LED illuminator accessory for Reliance flat glass level gages using amber LEDs to create a star-like water line image, approved for Class 1 Division 1 Group B, C, and D hazardous locations with 100,000-hour LED life.
• NightStar LED Illuminators LED illumination systems for Magnicator magnetic level indicators providing continuous visibility day or night, approved for Class I Division 1 hazardous locations, IP68 rated, with 10-year nominal LED life.
• Jacoby-Tarbox Sight Flow Indicators Full ASME-rated flanged sight flow indicators built to ASME B31.1 and B31.3 Power & Chemical Piping Codes, featuring tempered borosilicate glass for full-bore visibility and NACE MR-01-75/ISO 15156-1 compliance for sour service.
• Series 5005 Sight Windows with Spray Rings Bolt-on and security sight windows with quartz construction for high-temperature applications, featuring purge ports for nitrogen cooling and optional spray rings for in-service debris removal.
• Jerguson SafeView Shield Safety shield accessory that retrofits in minutes to Jerguson and other brands' flat glass gages to protect operators from potential high-pressure leaks.
• Hy-Trap Hygienic Bubble Trap Crevice-free, self-draining hygienic bubble trap for chromatography skids and pharmaceutical applications, using USP Type 1 Borosilicate glass cylinders, Class VI compliant elastomers, L-shaped seals preventing glass-to-metal impingement, and drain angles exceeding 10 degrees.
• In-Tank Eductors / Tank Liquid Agitators (TLAs) Low-shear Venturi-based in-tank mixing devices for blending, heating, aeration, and solid suspension in hygienic pharmaceutical, biotech, and food/beverage process tanks.
• GRQ Engineered Hygienic Clamp Hygienic clamp combining Nitronic 60 nuts with 304 SS mating components for superior gall resistance without thread lubrication, designed for sterile environments and sanitary process piping.
• AccuBlend CFD (Computational Fluid Dynamics Service) Engineering simulation service that models customer mixing applications and produces velocity profiles, flow patterns, and digital video snapshots of tank mixing dynamics over time to support in-tank eductor and agitator sizing.
• Reliance Boiler Trim (product line: gages, valves, columns, indicators) Reliance boiler trim product line comprising gages, valves, columns, and indicators — the most widely-recognized and trusted line of boiler trim controls in the industry for boiler level monitoring and water column systems.
• Jerguson (product line: level gage glasses, valves, magnetic level indicators, level switches, transmitters) Jerguson product line comprising the world's largest selection of liquid level gage glasses, valves, magnetic level indicators, level switches, and transmitters for process level indication and control.
• Jacoby-Tarbox (product line: sight flow indicators, sight windows, safety sight glass, hygienic products) Jacoby-Tarbox product line of sight flow indicators, sight windows, and safety sight glass products with the most extensive range of out-of-the-box safety sight glass offerings for visual flow verification.

Quantifiable outcome

• Coalescing filter elements achieve 99.98% removal efficiency for particles 0.3-micron and greater
• +3 more outcomes

Named customers6 records

Segments9 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature8 records

Scale indicators2 records

Recent moves6 records

Expansion highlights7 records

Direct peers

• VEGA Grieshaber: Family-owned German manufacturer focused almost exclusively on level, point level and pressure measurement. Competes head-to-head with Clark-Reliance's magnetic level indicators and level switches in chemical, water/wastewater and process plants.
• KROHNE Group: Process instrumentation specialist with strong level, flow and analytics offerings used across oil & gas, chemical and power. Comparable in customer overlap, project-based sales motion and engineered-solution positioning.
• Endress+Hauser: Global privately held leader in industrial process measurement instrumentation, including level, flow, pressure and analytical. Directly comparable as it sells level transmitters, switches, and indicators into the same power, oil & gas, chemical, food and pharma plants that Clark-Reliance serves.
• WIKA Instrument: Manufacturer of measurement instrumentation for pressure, temperature, level and force, with deep reach into power generation, oil & gas and HVAC/refrigeration. Comparable in breadth of mechanical and electronic level products serving industrial OEMs and end users.
• Magnetrol (AMETEK): Specialist in level and flow instrumentation for process industries, with a portfolio of guided-wave radar, ultrasonic, capacitance and magnetic level products. Closely overlaps with Jerguson and Jacoby-Tarbox product lines in boiler, chemical and hydrocarbon service.

Broad incumbents

• Emerson Electric (Rosemount): Large automation conglomerate whose Rosemount brand dominates industrial pressure, temperature, level and flow measurement. Overlaps with Clark-Reliance in refinery, chemical and power applications, but at much greater scale and with broader DCS and software offerings.
• ABB Measurement & Analytics: Division of ABB providing level, pressure, temperature and analytical instrumentation. Competes in the same process-industry accounts but bundles instruments into larger automation, electrification and digital solutions.
• Yokogawa Electric: Process automation major with pressure, temperature, level and flow instrumentation sold alongside its DCS platforms. Serves overlapping oil & gas, chemical and power customers as part of a much broader automation portfolio.

Others

• Pentair: Diversified water and fluid solutions company with industrial filtration, separation and process equipment. Comparable through the Filtration & Separation portion of Clark-Reliance's portfolio, especially in oil & gas and power.
• Donaldson Company: Global filtration manufacturer serving industrial and OEM markets. Comparable through Clark-Reliance's Anderson separators, filter elements and Oil Filtration Systems lines, particularly in midstream gas and oil purification applications.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

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Revenue estimate

Valuation estimate

Number of profiles

Subsidiaries11 records

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 Clark-Reliance