What Flowline OÜ does

Flowline OÜ is an Estonian private limited engineering consultancy headquartered in Tallinn that supplies and installs industrial flow measurement and environmental monitoring systems. The company was reincorporated in Estonia in 2019, building on over 25 years of flow measurement experience originally established in the UK market. It offers a comprehensive portfolio of non-intrusive flowmeters spanning ultrasonic (clamp-on and inline), radar (non-contact), electromagnetic, thermal mass, vortex, and pitot-tube technologies, sourced through partnerships with 11 OEMs including Ultraflux, Flow-Tronic, Hoentzsch, Systec, Gill Instruments, and Fluidwell. Products range from portable survey meters to permanent fixed installations supporting pipe diameters from 10mm to 500m and covering water, gas, air, steam, sewage, effluent, and rivers.

The company's revenue model combines hardware sales, professional services (long-term flow surveys of 1 week to many months, short-term flow checks, and independent meter verification), and managed services (web-enabled remote monitoring via myDatanet IoT data loggers). It also delivers turnkey off-grid power solutions combining solar panels with EFOY fuel cells to enable deployments in remote Nordic locations lacking grid power. Go-to-market is sales-led B2B with direct engagement, site visits, and custom quote-based project pricing, targeting primary verticals of wastewater/sewer management, industrial manufacturing, environmental monitoring, and power generation, with secondary exposure to aviation, mining, oil and gas, and shipping. Named customers include Hitachi, G4S, Tallina Vesi, Utilitas, Solaride, and Taltech.

Operating with 1-10 employees, Flowline acts as a regional integrator rather than a product manufacturer, deriving its value from multi-vendor technical expertise, long-standing OEM relationships (notably 25+ years with Ultraflux), and the ability to deliver complete measurement solutions for challenging applications where flows cannot be shut down, pipes cannot be drilled, or sites lack power infrastructure. The firm shows no disclosed external funding, is privately held, and operates primarily across Estonia and the UK.

Name

Flowline OÜ

Legal name

Flowline OÜ

Website

https://flowline.ee

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Ownership category

akta.pro rank

Product category

Industrial Flow Measurement & Environmental Monitoring Services

NAICS

Totalizing Fluid Meter and Counting Device Manufacturing (334514), Measuring, Dispensing, and Other Pumping Equipment Manufacturing (333914), Pipeline Transportation of Natural Gas (486210)

SIC

Totalizing Fluid Meters & Counting Devices (3824), Water Supply (4941), Natural Gas Transmisison & Distribution (4923), Oil & Gas Field Machinery & Equipment (3533)

akta.pro primary industry

Drinking Water Distribution Network Operations (Mains, Valves, Hydrants, Service Lines) (EUANAAAE)

akta.pro secondary industries

Gas Flow Measurement & Remote Metering Operations (Flow Computers, EFM) (EUAJAFAF), Treated Drinking Water Transmission Pipelines (Bulk Conveyance) (TLAGAHAB), NGL/LPG Pipeline Pump/Compressor & Metering Stations Operations (TLAGAEAL)

Keywords

• Flow measurement systems
• Industrial flowmeters
• Environmental monitoring solutions
• Ultrasonic flow meters
• Flow survey services

Headquarters

HQ city

Tallinn

HQ country

Estonia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Services

Cost components

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

Revenue model

1. Flow Measurement Equipment Sales: Sale of flowmeters and sensors including ultrasonic, radar, electromagnetic, thermal mass, and pitot tube devices. Products sold include both portable/mobile units for surveys and permanent installations.
2. Flow Survey Services: Long-term flow measurement projects ranging from 1 week to many months. Includes installation of monitoring equipment, data logging, and web-based data access.
3. Flow Check Services: Short-term flow measurement site visits using portable equipment. Includes flow verification and meter validation services.
4. Meter Verification/Validation: Independent verification of existing flowmeters using portable reference meters. Includes signal output validation to ensure correct scaling.
5. Remote Monitoring Services: Web-enabled data logger installation and data access services. Data presented via webpage with automatic report generation and alarm notifications.
6. Off-Grid Power Systems: Solar power systems and hybrid solar/fuel cell solutions for powering off-grid flow measurement installations.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Flowline OÜ is an Estonian engineering consultancy that supplies and installs industrial flow measurement and environmental monitoring systems. The company distributes and integrates flowmeter hardware from third-party manufacturers (Ultraflux, Flow-Tronic, Hoentzsch, Systec, Gill, Fluidwell, Macnaught, Nixon, RCM) and complements it with services including long-term flow surveys, on-site meter verification, web-based remote monitoring, and hybrid solar/fuel-cell off-grid power systems for remote installations.

Product overview

Flowline OÜ is a flow measurement company offering a comprehensive portfolio of flow measurement products and services. The core offering consists of flow measurement hardware including radar flowmeters (Phoenix, Raven-Eye), ultrasonic flowmeters (Ultraflux Minisonic series), electromagnetic flowmeters, thermal mass flowmeters (Hoentzsch), vortex flowmeters, pitot tubes (DF25, DFC), oval gear meters (Macnaught), turbine meters (Nixon), and steam flowmeters (RCM Flo-Gage). These are complemented by weather monitoring equipment (WindSonic, MaxiMet, LIDAR ceilometers), process displays and batch controllers (Fluidwell F/N-series), and web-enabled data loggers (myDatanet). Services include flow surveys, meter verification, remote monitoring, and off-grid power solutions combining solar and fuel cell technology. The company supplies solutions across industries for measuring water, gas, air, steam, sewage, effluent, rivers, and chemicals, with products ranging from portable clamp-on meters to fixed installations with solar power capabilities.

Differentiator

Problem solved

Functional benefit

Products and services

• Flow Surveys Long-term flow measurement projects lasting from one week to many months. The service includes installation of monitoring equipment, data logging, and web-based data access for the duration of the survey. Targeted at industrial, municipal, and environmental clients that need extended flow monitoring campaigns.
• Meter Checking / Verification Independent verification service that checks whether existing flowmeters are working correctly and validates output signals to ensure correct scaling. Uses portable reference meters to audit installed equipment. Targeted at utilities, plants, and operators that need assurance their existing meters are accurate.
• Remote Monitoring Web-enabled data logger service that enables remote monitoring of flowmeters, level sensors, and gas monitors (H2S, Ammonia). Data is presented via a webpage with automatic report generation and alarm notifications. Targeted at operators needing anytime/anywhere visibility into remote or unmanned flow assets.
• Off-Grid Power Solutions Solar and fuel cell power solutions that supply electricity to off-grid flow measurement installations. Hybrid configurations combine solar with EFOY fuel cell backup to maintain continuous operation in remote sites with limited sunlight (e.g., long Nordic winters). Targeted at remote, unmanned flow monitoring sites without mains power.
• Flow Check Services Short-term on-site flow measurement site visits using portable clamp-on flowmeters, without breaking into pipes or stopping flows. Data is logged during the visit and provided at the end. Targeted at operators who need quick verification or spot measurement of in-pipe flow rates.
• Phoenix Non-Contact Radar Flowmeter Non-contact radar flowmeter supplied from Flow-Tronic, suitable for rivers, large channels and drains. Available as fixed or portable system with AC or battery/solar power options. Handles channels from 300 mm to 30 m and comes with a five-year warranty. Targeted at environmental monitoring agencies and large-channel operators.
• Ultraflux UF800 Series Ultrasonic Flowmeters Fixed multi-path time-of-flight ultrasonic open channel flowmeters from Ultraflux for rivers, sewers, drains and channels. Suitable for channels from 300 mm to 500 m wide and conforming to ISO 6418. Comes with a two-year warranty. Targeted at large open-channel flow measurement applications.
• Pelican Velocity Meter Electromagnetic current/velocity meter with no moving parts, designed for use in dirty flows like sewers. Targeted at wastewater utilities that need robust, low-maintenance velocity monitoring.
• Raven-Eye Non-Contact Radar Flowmeter Non-contact radar flowmeter from Flow-Tronic suitable for sewers, open channels and drains. Available as fixed or portable system with AC or battery/solar power. Channels from 100 mm to 5 m. Targeted at municipal sewer and drainage operators.
• Beluga Doppler Open Channel Flowmeter Doppler ultrasonic flowmeter from Flow-Tronic for sewers, open channels and drains. Can be used as fixed or portable system, handling channels from 150 mm to 10 m. Targeted at wastewater and drainage operators needing reliable open-channel measurement.
• Ultraflux Minisonic Portable Flowmeter Non-contact/clamp-on portable flowmeter from Ultraflux for pipe sizes from 10 mm to 10 m. Works on steel, plastic, iron, and concrete pipes and measures water, sewage, oil, and chemicals without contact or shutdown. Up to 70 hours of battery life. Targeted at field engineers and survey crews needing portable non-invasive measurement.
• Ultraflux Minisonic Fixed Flowmeter Cost-effective non-contact/clamp-on fixed flowmeter from Ultraflux available in Single Chord and Multi-Chord/Pipe models. Pipe sizes from 10 mm to 10 m. AC or DC powered. Targeted at plants needing permanent non-invasive flow measurement without shutting down processes.
• Ultraflux Minisonic Interface Detector Clamp-on interface and pig detector from Ultraflux for multi-product oil lines and pharmaceutical production. Detects product changes without breaking into the pipe and can check product density. Targeted at oil pipeline operators and pharmaceutical manufacturers.
• Macnaught Oval Gear Flowmeters Robust industrial oval gear flowmeters suitable for clean liquids including oils, chemicals, and solvents. Available in threaded inline and flanged versions for pipe sizes 1/4" to 4". Targeted at chemical, oil, and industrial process operators.
• Nixon NT Industrial Turbine Flowmeters Robust industrial turbine flowmeters from Nixon for clean liquids. Available in threaded, flanged, and hygienic versions. Pipe sizes 1/2" to 3" BSP Male. Targeted at industrial process operators with hygienic or sanitary requirements.
• Hoentzsch Thermal Mass Flowmeters Air/gas flowmeters with no moving parts from Hoentzsch, available in insertion, inline, and flanged versions. Pipe sizes from 25 mm. Suitable for extraction air flow, leakage checking, and flow balancing. Targeted at industrial gas and HVAC operators.
• Hoentzsch Vortex Flowmeters Air/gas vortex flowmeters with no moving parts from Hoentzsch, available in insertion, inline, and flanged versions. Pipe sizes from 80 mm. Suitable for contaminated gases and biogas/landfill gas. Targeted at biogas, landfill gas, and contaminated-gas operators.
• Hoentzsch Vane Wheel Flowmeters Air/gas and liquid vane wheel flowmeters from Hoentzsch that can measure very low-velocity flows. Available in insertion, inline, and flanged versions. Pipe sizes from 40 mm. Suitable for clean gases, air, and liquids. Targeted at operators needing low-velocity flow measurement.
• Systec DFC Insertion Pitot Tube Air/gas flowmeter with no moving parts from Systec, available in insertion, inline, and flanged versions. Pipe sizes: G3/4" inline, greater than 20 mm insertion. Targeted at industrial air/gas process measurement.
• Systec DF25 Insertion Pitot Tube Air/gas, liquid, and steam flowmeter with no moving parts from Systec, available in insertion, inline, and flanged versions. Pipe sizes from 80 mm to 2,500 mm. Hot-tap installation allows installation under pressure without shutdown. Suitable for sewage treatment airflow, cooling air, chimney/stack flows, and steam supply/billing. Targeted at industrial plants, sewage works, and steam suppliers.
• RCM Flo-Gage Steam Flowmeters Tough, reliable flowmeters for air/gas, steam, and liquid with no moving parts. Designed for industrial durability. Pipe sizes from 15 mm to 200 mm, horizontal pipes only. Mechanical operation, no power required. Targeted at steam and air/gas process operators needing low-maintenance measurement.
• In-Line Electromagnetic Flowmeters Electromagnetic flowmeters with no moving parts for clean and dirty liquid flows. Pipe sizes from 10 mm to 2 m. Suitable for water, sewage, and chemicals. Targeted at water utilities and industrial liquid process operators.
• Insertion Electromagnetic Flowmeters Electromagnetic insertion flowmeters installable without flow shutdown. No moving parts and suited to clean liquid flows. Pipe sizes from 80 mm to 6 m. Targeted at plants needing to retrofit electromagnetic measurement onto live pipes.
• Gill WindSonic Ultrasonic Anemometers Ultrasonic anemometers from Gill Instruments with no moving parts. Wind speeds up to 90 m/s, operating temperature -55 to +70 °C (with heating). Available in 2D and 3D models. Targeted at weather stations, airports, and environmental monitoring sites.
• Gill MaxiMet / MetPak Weather Monitors Multi-parameter weather sensors from Gill monitoring wind, temperature, pressure, humidity, rainfall, density, and wind chill. GPS and compass options available. Targeted at solar farms and other sites needing integrated meteorological measurement.
• Eliasson CBME80B LIDAR Ceilometer Compact LIDAR cloud ceilometer from Eliasson for measuring cloud base height and vertical visibility. Range 0–7,500 m, resolution 5 m. Operating temperature -40 to +60 °C. Long laser life of 10 years. Targeted at airports and meteorological stations.
• Fluidwell F-Series Process Displays and Batch Controllers Compact, tough and versatile display range from Fluidwell for remote or meter-mounted flow display. RS485, voltage, and mA outputs. ATEX options available. Operating temperature -40 to +70 °C. Targeted at plants needing local display and control of flow measurements.
• Fluidwell N-Series Batch Controllers Tough and reliable batch controllers from Fluidwell with multiple inputs and outputs. ATEX options available. Targeted at process operators needing batch control of flow measurement.
• myDatanet Easy IoT Logger Compact, tough and versatile web-enabled data logger from myDatanet with four programmable inputs and MODBUS upgrade option. Well-proven in many industries for remote monitoring applications. Targeted at operators needing web-accessible data logging from flowmeters, level sensors, and gas monitors.
• myDatasens Gas Monitor and Logger Portable, robust data logger from myDatanet that measures and transmits live gas concentrations (H2S, NH3 or H2O2) in ambient air. Designed for sewers and confined spaces with up to 10 years of battery life. Targeted at wastewater utilities and confined-space safety monitoring.
• Cold Water Meters Water meters for domestic and industrial use. Meter sizes from 15 mm to 300 mm. Threaded or flanged connection. Pulse output for remote monitoring. Targeted at water utilities and industrial water consumers.
• Hot Water and Heat Meters Hot water meters for domestic and industrial use. Heat meters with MID and RHI approval. Pipe sizes from 15 mm to 100 mm. Clean non-ragging liquids. Signal output options. Targeted at district heating, building services, and industrial hot-water operators.

Quantifiable outcome

• Zero maintenance required for many installations (e.g., airport surface water system operating since 2008)
• +2 more outcomes

Named customers6 records

Segments8 records

Ideal customer profiles4 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature10 records

Partnerships

Eleven partnerships are on record, tiered core and standard.

• UltrafluxcoreTechnology or IntegrationLong-term partnership with Ultraflux spanning over 25 years. Ultraflux supplies ultrasonic flow measurement technology including Minisonic portable and fixed clamp-on flowmeters, and UF800 series open channel flowmeters.
• Flow-TroniccoreTechnology or IntegrationPartnership with Flow-Tronic for radar flow measurement technology. Products include Raven-Eye non-contact radar flowmeters for sewers and drains, and Phoenix radar flowmeters for rivers and large channels.
• HoentzschcoreTechnology or IntegrationPartnership for thermal mass, vortex, and vane wheel flowmeters for air and gas measurement applications. Products include insertion, in-line, and flanged versions.
• Systec InstrumentscoreTechnology or IntegrationPartnership for Systec DF25 and DFC insertion pitot tube flowmeters for air, gas, liquid, and steam measurement. Hot-tap installation capability.
• Gill InstrumentscoreTechnology or IntegrationPartnership for Gill WindSonic ultrasonic anemometers and MaxiMet/MetPak weather monitoring systems. No-moving-parts wind and weather sensors.
• FluidwellstandardTechnology or IntegrationPartnership for Fluidwell F-Series process displays and N-Series batch controllers for flow measurement display and control applications.
• myDatanetcoreTechnology or IntegrationPartnership for myDatanet web-enabled IoT data loggers supporting multiple inputs including flowmeters, level sensors, and gas monitors (H2S, NH3, H2O2).
• EFOY (Fuel Cell)coreTechnology or IntegrationPartnership for EFOY fuel cell technology to provide hybrid solar/fuel cell power solutions for off-grid flow measurement installations, particularly suitable for regions with long dark winters.
• RCMstandardTechnology or IntegrationPartnership for RCM Flo-Gage steam flowmeters - tough, reliable flowmeters with over 50 years of history. No moving parts, suitable for air, gas, steam and liquid measurement.
• MacnaughtstandardTechnology or IntegrationPartnership for Macnaught oval gear flowmeters - robust industrial meters suitable for clean liquids including oils, chemicals, and solvents. Threaded and flanged versions available.
• NixonstandardTechnology or IntegrationPartnership for Nixon NT industrial turbine flowmeters - robust meters for clean liquids. Available in threaded, flanged, and hygienic versions.

Scale indicators3 records

Recent moves6 records

Expansion highlights5 records

Direct peers

• Badger Meter: Pure-play flow measurement company focused on water and wastewater utilities with ultrasonic and electromagnetic metering solutions. Closely overlaps Flowline's water utility customer base and channel.
• KROHNE: German-headquartered specialist in industrial process instrumentation with a deep ultrasonic, electromagnetic, and Coriolis flow measurement portfolio. Closely comparable to Flowline's non-intrusive flow measurement value proposition across water, wastewater, and process industries.
• Hach (Xylem brand): Specialist in water quality and flow measurement for drinking water, wastewater, and environmental monitoring. Highly comparable to Flowline's water utility and sewer flow survey business, with greater scale.

Broad incumbents

• Siemens Process Automation: SITRANS F family of ultrasonic, electromagnetic, and Coriolis flowmeters targets the same municipal water, wastewater, and power generation customers as Flowline, with the backing of a global service network.
• Endress+Hauser: Global leader in process automation instrumentation including the Prosonic Flow ultrasonic and radar flowmeter families. A much larger incumbent that competes head-to-head with Flowline across wastewater, chemical, and utility applications.
• Emerson (Rosemount): Major industrial automation group whose Rosemount line includes a broad range of flow measurement products for utilities and process industries. Competes with Flowline on enterprise utility and process accounts globally.
• Yokogawa Electric: Global process automation leader offering magnetic, vortex, Coriolis, and ultrasonic flowmeters for power, water, and process industries. Competes with Flowline on enterprise-scale utility and power generation projects.
• ABB Measurement & Analytics: ABB offers a comprehensive flow measurement portfolio (electromagnetic, Coriolis, vortex, ultrasonic) for water, wastewater, oil & gas, and power — directly overlapping Flowline's served verticals.

Emerging players

• Pulsar Measurement: UK-based specialist in non-contact ultrasonic level and flow measurement for water, wastewater, and environmental applications. Similar size and channel profile to Flowline, with overlapping ultrasonic open-channel flow technology.
• Titan Enterprises: UK-based niche flowmeter manufacturer focused on low-flow and specialty liquid measurement. Comparable scale and channel type to Flowline within industrial flow measurement, though serving different sub-segments.

Market position

Strengths4 records

Weaknesses5 records

Competitive moat4 records

Key risks6 records

Key highlights7 records

Customer concentration

Revenue estimate

Valuation estimate

Number of profiles

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 Flowline OÜ