What Ralston Instruments does

Ralston Instruments, LLC is a privately held, family-owned U.S. manufacturer of pressure calibration equipment, founded in 1969 by Doug Ralston and headquartered in Novelty, Ohio with manufacturing operations in Newbury, Ohio. The company designs and builds digital pressure calibrators (the FieldLab FLP1), digital pressure gauges (Field Gauge LC10, LC20, and the LC30 Process Meter), a broad line of hydraulic and pneumatic hand pumps, the NitroPak portable nitrogen calibration system, the QTVC gas pressure controller, and a wide array of calibration manifolds, pressure regulators, block-and-bleed valves, fluid traps, thermal probes, and hose reels. Its differentiating technology is the proprietary Quick-test connection system—fingertight, tool-free, leak-free fittings, microbore hoses, and adapters—that spans multiple pressure ratings and is reinforced by the Quick-test XT variant for higher pressures.

The company's business model combines hardware sales (gauges, pumps, controllers, fittings) with high-margin calibration consumables (hoses, adapters, manifolds) and an ISO/IEC 17025:2017-accredited in-house calibration laboratory providing accredited calibration data. All products are sold exclusively through a global distributor network rather than direct, with pricing set by distributors via a dedicated Distributor Portal; Ralston explicitly states it does not sell direct. End customers request quotes through the website, which are routed to distributors, and the company maintains a Ralston Portal for product information. GTM is reinforced through industry trade shows (NCSLI, AGMSC, ASGMT), technical content marketing, YouTube tutorials, case studies, and email newsletters, while FieldLab Desktop software (Windows) and FieldLab Mobile App (iOS/Android) handle gauge configuration, firmware updates, test templates, engineering-unit customization, and USB/Bluetooth data logging.

Ralston serves industrial calibration technicians across oil & gas (natural gas pipelines, petroleum production, refining), power generation (combined-cycle plants), pipeline operations, contract calibration laboratories, and process control manufacturing. The company targets hazardous-location and regulated buyers, evidenced by ATEX QAN, IECEx QAR, UKQAN, CE, CSA, IECEE CB, ACMA, KCC, PFAS, REACH, and RoHS certifications. Its geographic footprint spans North America, Europe (UK, Germany, France), Asia Pacific (China, Japan, Australia, Korea), the Middle East (UAE), and Latin America (Brazil). Public recognition includes the Fast Track 50 (2025), Weatherhead 100, and Great Place to Work 2026-2027 certifications, alongside ISO 9001:2015 and ISO/IEC 17025:2017 accreditations from A2LA.

Name

Ralston Instruments

Legal name

Ralston Instruments, LLC

Website

https://ralstoninst.com

Company type

Private

Founded year

1969

Operating status

Operating

Headcount range

1–10 employees

Short description

Ralston Instruments is a family-owned U.S. manufacturer of digital pressure calibrators, gauges, hand pumps, gas controllers, and proprietary Quick-test fitting systems, sold globally through distributors to oil & gas, power generation, pipeline, and calibration-lab technicians.

Ownership category

akta.pro rank

Product category

Pressure Calibration Equipment

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

Metrology, Calibration & Testing Equipment (Balances, pH/DO, Standards) (HLAGAIAL)

akta.pro secondary industries

Weighing & Force Measurement (Load cells, scales, torque, strain measurement) (IMAGAFAF), Calibration Services & Standards (Calibration labs, reference standards, traceability services) (IMAGAFAH), Metering Equipment Testing, Calibration & Certification (EUAJAKAA)

Keywords

• Pressure calibration equipment
• Digital pressure gauges
• Hand pumps calibration
• Calibration accessories
• Pressure testing instruments

Headquarters

HQ city

Novelty

HQ country

United States

HQ region

North America

Offices2 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

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

Revenue model

1. Pressure Calibration Equipment Sales: Ralston Instruments generates revenue primarily through the sale of pressure calibration equipment including digital pressure gauges (LC10, LC20, LC30), hand pumps (hydraulic and pneumatic), calibration manifolds, pressure controllers, and accessories. Products are sold exclusively through distributor partners with pricing determined by the distributor network.
2. Calibration Accessories and Consumables: Sale of replacement parts, hoses, adapters, fittings, and calibration accessories that complement the core calibration equipment. Includes items like protective boots, cases, USB cables, and replacement components.
3. Calibration Services: In-house ISO 17025:2017 accredited calibration services for Ralston's own products and potentially customer devices. Calibration data points are accredited to ISO/IEC 17025:2017 standards.

Go-to-market motion1 record

Distribution channels2 records

Marketing channels8 records

Core offering

Ralston Instruments manufactures precision pressure calibration equipment, including digital pressure calibrators (FieldLab FLP1), digital pressure gauges (LC10, LC20, LC30), hydraulic and pneumatic hand pumps, compressed gas controllers, and the proprietary Quick-test tool-free connection system. Products are sold exclusively through a global distributor network and supported by ISO/IEC 17025:2017 accredited in-house calibration services. The portfolio covers the full pressure calibration workflow from pressure generation through measurement, control, and connectivity.

Product overview

Ralston Instruments is a pressure calibration equipment manufacturer offering a comprehensive portfolio of precision-engineered products for field and laboratory calibration applications. The core product family includes digital pressure calibrators (FieldLab FLP1), digital pressure gauges (LC10, LC20, LC30 Process Meter), and a complete range of pressure generation equipment including hydraulic hand pumps (QTHP, XTHP), pneumatic hand pumps (DCAP, DCAP-PV, DP0V, DV0V, DPPV), gas sampling pumps (SP0V), and the NitroPak portable nitrogen calibration system. The integrated Quick-test System provides tool-free, leak-free connectivity through microbore hoses, tube fitting adapters, and test point adapters. Supporting products include calibration manifolds (QTCM, QSCM), pressure controllers (QTVC ControlPak), pressure regulators (XREG), fluid traps, block and bleed valves, thermal probes, and the QTHR hose reel kit for remote applications. Software offerings include FieldLab Desktop (Windows) and FieldLab Mobile App (iOS/Android) for gauge configuration, data logging, and calibration management. All products are manufactured in the USA and designed for durability, accuracy, and compatibility in demanding field and laboratory environments.

Differentiator

Problem solved

Functional benefit

Brands

• Quick-test™ System: A complete ecosystem of precision fittings and hoses that enable fast, leak-free connections for pressure calibration without tools or thread tape.

Products and services

• FieldLab Digital Pressure Calibrator A digital pressure calibrator for creating tests, logging results, and performing firmware updates, with Bluetooth connectivity and compatibility with FieldLab Mobile App and Desktop Software.
• Field Gauge LC10 Digital pressure gauge with ±0.25% full scale accuracy, bottom process connection, AA alkaline battery power, and optional calibration certificate.
• Field Gauge LC20 Digital pressure gauge with ±0.1% full span accuracy (ASME B40.100 Grade 4A / ISO Class 0.1), optional Bluetooth, 16 pressure ranges from 5 psi to 30,000 psi, and IP67 waterproof rating.
• Process Meter LC30 Panel-mounted digital pressure gauge with ±0.1% full scale accuracy, AC power with battery backup, USB connection for calibration software, and 15 standard engineering units with customization options.
• QTHP Hydraulic Hand Pump High-pressure hydraulic hand pump for field calibration applications, designed for durability with metal handles.
• XTHP Hydraulic Hand Pump Hydraulic hand pump for pressure calibration, built for tough field conditions.
• DCAP Pneumatic Scissor Hand Pump High-pressure pneumatic scissor hand pump for calibration applications with durable metal handles.
• DCAP-PV Pneumatic Pressure/Vacuum Scissor Hand Pump Dual-function pneumatic pump capable of generating both pressure and vacuum for calibration.
• DP0V Pneumatic Cylinder Hand Pump Pneumatic cylinder hand pump for pressure generation in calibration applications.
• DV0V Vacuum Cylinder Hand Pump Vacuum cylinder hand pump for generating vacuum conditions during calibration.
• DPPV Pneumatic Pressure/Vacuum Hand Pump Dual-function pneumatic pump for pressure and vacuum calibration applications.
• SP0V Gas Sampling Pump Gas sampling pump that pulls low-pressure gas from wells and boosts it to 25 psi for sample cylinder filling, with hard-anodized aluminum body and stainless steel fittings.
• NPAK NitroPak Calibration System Portable nitrogen pressure calibration system with onboard compressed gas cylinder, precision volume controller, and pressure regulator; self-contained for remote calibration up to 3,000 psi.
• QTVC Volume Controller / ControlPak Compressed gas manual pressure controller for precise pressure control in lab or field calibration applications.
• QTCM Calibration Manifold Calibration manifold for connecting multiple devices under test, part of the Quick-test system.
• QSCM Calibration Manifold Calibration manifold for efficient multi-device calibration setups.
• Ralston Quick-test System Complete ecosystem of Quick-test fittings and hoses enabling tool-free, leak-free pressure connections without wrenches or thread tape, including tube fitting adapters, Quick-test XT adapters, and microbore hoses.
• Quick-test Microbore Hoses Low-volume, high-stability microbore hoses for instant pressure transmission, available in brass or stainless steel with working pressure up to 6,900 psi.
• Tube Fitting Quick-connect Hoses Quick-connect hoses for Swagelok, Parker, Hoke, SSP, Tylok or equivalent tube fittings without wrenches, in brass or stainless steel and 1/4" or 1/8" sizes.
• Tube Stub Hoses Flexible high-pressure tube stub hoses for tube fitting connections, available in brass or stainless steel, 1/4" and 1/8" sizes, working pressure 6,900 psi.
• Test Point Adapters Adapters for connecting to hydraulic or pneumatic systems under pressure using Quick-test connections.
• Block and Bleed Valves Valves for block and bleed operations in pressure calibration and testing applications.
• XREG Pressure Regulators Pressure regulators for controlling pressure in calibration and testing applications.
• Fluid Traps Fluid and moisture traps to eliminate unwanted fluid from gas systems during calibration.
• Benchtop Manifolds Manifolds for benchtop calibration setups allowing simultaneous calibration of multiple devices.
• Thermal Probes Temperature measurement probes compatible with Field Gauge models for combined pressure and temperature calibration.
• QTHR Hose Reel Kit Heavy-duty hose reel with 50+ ft of Quick-test hose for remote transmitter calibration; can be spooled or unspooled under pressure up to 5,000 psi.
• FieldLab Desktop Software Free Windows application for use with Ralston Digital Gauges and Calibrators that manages settings, creates test templates, performs firmware updates, manages engineering units, and enables USB data logging.
• FieldLab Mobile App Mobile application for iOS and Android enabling remote viewing and control of Bluetooth-equipped Ralston gauges, with interval definition, engineering unit selection, data log start/stop, and CSV export.
• ISO/IEC 17025:2017 Accredited Calibration Services In-house ISO 17025:2017 accredited calibration services for Ralston's own products and customer devices, with metrological traceability to SI units through NIST and other national metrology institutes.

Quantifiable outcome

• Lawrenceburg Power retired 80+ measurement standards through calibration standardization with Quick-test fittings
• +2 more outcomes

Named customers2 records

Segments6 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature6 records

Partnerships

One partnership is on record.

• Measurement, Control and Automation Association (MCAA)minorOthersRalston Instruments is a proud member of the Measurement, Control and Automation Association, an industry organization supporting companies in the measurement and control equipment sector.

Scale indicators6 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Fluke Calibration: A division of Fluke Corporation (Fortive) and one of the most established pressure and electrical calibration equipment manufacturers globally. Directly comparable product lines include pressure calibrators, deadweight testers, and calibration software targeting the same industrial and lab customers Ralston serves.
• Additel: Specialist pressure calibration equipment manufacturer offering digital pressure calibrators, gauges, hand pumps, and test fittings. Highly comparable to Ralston across product type, target customer (field/lab technicians in oil & gas, power, and process industries), and distribution model.
• Beamex: Finnish pressure and temperature calibration instrument manufacturer with a strong focus on integrated calibration software and documentation workflows. Overlaps directly with Ralston's FieldLab pressure calibrator and software positioning, and increasingly competes in connected/automated calibration.
• Crystal Engineering (part of Fluke Calibration): Pressure calibration equipment brand now under Fluke Calibration, known for its nVision reference recorder and portable pressure calibrators. Directly competes with Ralston in high-accuracy field and lab pressure calibration.
• DH-Budenberg: Long-established pressure calibration and deadweight tester manufacturer (since 1904) serving oil & gas, power, and process industries. Comparable to Ralston in legacy pressure calibration product depth and industrial customer base.

Broad incumbents

• WIKA (Mensor): WIKA is a large, broad-line industrial measurement specialist; its Mensor division focuses specifically on high-precision pressure calibration instruments and controllers. Comparable to Ralston in pressure calibration but offers a much wider portfolio across temperature, level, and force measurement.
• Ametek Calibration Instruments: Ametek's calibration instruments group (including brands like JOFRA and M&G) provides pressure and temperature calibration solutions. Comparable in calibration instrumentation but operates at significantly larger scale and with broader product breadth.
• Transcat: Calibration services and instrument distribution company that competes both as a calibration services provider (where Ralston's ISO 17025 lab also competes) and as a channel through which industrial calibration equipment reaches end users.
• GE Druck (Baker Hughes): Druck is a long-established pressure measurement and calibration brand within Baker Hughes, competing across industrial, oil & gas, and aerospace pressure instrumentation — the same verticals Ralston targets but with much broader scale and a direct sales model.

Emerging players

• Calibration Source (CS Instruments): Smaller, niche pressure calibration equipment specialists operating in overlapping field/lab segments. Comparable as emerging pressure calibration players that compete for similar industrial and lab technician customers on price and portability.

Market position

Strengths4 records

Weaknesses4 records

Competitive moat5 records

Key risks6 records

Key highlights5 records

Customer concentration

• YouTubeyoutube.com/user/ralstoninstruments
• Facebookfacebook.com/ralstoninstruments
• LinkedInlinkedin.com/company/ralston-instruments
• Instagraminstagram.com/ralstoninstruments

Compliance19 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles2 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 Ralston Instruments