| Aalborg Instruments & Controls, Inc.: Manufactures flow measurement and control instrumentation for gases and liquids |
| Actaris Neptune: Manufacture of flow meters. |
| Advanced Metering Systems (2000) Ltd: Provides tiny flow control systems and pumps for process control, batch, and ratio flow control suitable for corosive and non-corosive liquids. Site in English and Hebrew. |
| Alicat Scientific, Inc.: Manufacturer of analog and digital pressure and flow instrumentation used in process control applications for laboratory and industry. |
| American Sigma: Open channel flow meters, water quality and process control monitors, wastewater samplers and advanced sewer system management software. Manufacturer. |
| ASAHI/America,Inc.: Corrosion-resistant plastic vortex flow meters. Manufacturer. |
| ASL AQFlow Inc.: Flow meters for low head dam flow measurement, spillway discharge measurement, flow monitoring, hydroelectric industry. |
| Autoflow Products Co.: Manufacturer of gas and liquid flow switches and sample system steam select valves. |
| AW Company: Manufactures flow meters, flow monitors, flow computers and customized flow control products. Positive displacement and turbine flow meters, flow monitors, two-component ratio monitors and state-of-the-art closed-loop controllers, fiber-optic sensors, on-line optical sensors. |
| BIF: Water treatment industry products including universal venturi tubes, flow controller and measurement tools. Also, information on sealed metering and rate of flow. An SPX company. |
| BIOS International Corporation: Manufactures precision air flow calibrators and automated sequential sorbent tube samplers for industrial hygiene, environmental, laboratory, and metrological applications. |
| Bronkhorst High-Tech B.V.: Manufacturers massflow and pressure meters and controllers for gas and liquid fluids. |
| Cambridge AccuSense: Developer of air velocity sensors and multipoint airflow instrumentation. |
| Central Station Steam Co.: Condensate, vortex and ultrasonic meters for the measurement of condensate, steam, hot and chilled water. |
| Controlotron Corp.: Provides ultrasonic flowmeters for both gas and liquid. Online line card and product data sheets. |
| COX Instrument: Manufacture of flowmeters and accessories. |
| D-Flow: Offers technical support for ultrasonic flow measurement. Provides the means to develop an ultrasonic flow meter using technology based on the sing-around method, which is a further development of the transit-time method. The concept is realized in an integrated circuit and ultrasonic transducers. |
| Digmesa: Manufacturer of flowmeters for measuring small amounts of liquids. |
| EESIFLO: Manufacturer of clamp on ultrasonic flow meters and open channel flowmeters. |
| Engineering Measurements Company: Designs, develops, manufactures, markets and distributes electronic and electro-mechanical instruments for measuring the flow of liquids, steam and gases. (Nasdaq: EMCO). |
| ERDCO Engineering Corporation: Manufacturer of industrial/utility flow meters, indicators and switches for water, air, oil, steam, and sve. |
| F S Brainard: Manufactures portable instrumentation under the brand name, Meter-Master, including flow recorders, pressure recorders, data loggers, flow monitors, data collection and analysis software. |
| Fathom Technology: Manufacturer of thermal gas flow measurement and control instrumentation in Texas. Includes pricing and specifications. |
| Flomotion Systems: Provides advanced magnetic flowmeters and unique pumping solutions for the food and water industries. |
| Flow Automation: Inline turbine meters, insertion turbine meters, remote mounted low power flow computers, custom designed communications systems, panel mounted flow computers. A Thermo Instruments Systems company. |
| Flow Technology: Turbine flow meters and custom designed flow measurement systems for users in the automotive, aerospace/defense, process/manufacturing and metrology industries. |
| Flowell Corporation: A manufacturing company of flow elements. |
| FlowHIRE Limited: Flowhire is a unique hire company specialising in the hire of flowmeters and flowmetering systems in the UK. |
| Flowhow Oy: Manufactures flow measurement equipment including orifice plates, nozzles, venturis, venturi nozzles, others. |
| FMC Measurement Solutions: Manufacturer of the brand Smith Meter offering a range of current technologies for liquid and gas measurement and control applications. |
| Franklen Equipment: Offers flow measurement solutions for the chemical, petroleum, and food industries. |
| Harwil Corporation: Manufacturer of fluid flow and liquid level switches, level controls and shut down controls. |
| Hoffer Flow Controls, Inc: A manufacturer of turbine flowmeters and electronic measuring devices. |
| Horiba Stec: Mass flow controllers for fluid measurement and control. |
| Imperial Flange & Fitting Company, Inc.: Manufactures custom flow elements including orifice plates and flanges, flow tubes and nozzles, venturi and pitot tubes, thermowells, thermocouples, RTDs, grounding rings, meter runs, and spool pieces. |
| InFlow Inc.: Manufacturer of standard and specialty flow instrumentation (low flow, and/or high accuracy) and controls. |
| Ion Science: Manufacturer of gas leak detection, pressure leak detectors and hand held portable equipment for industrial production lines, medical devices, gas filled containers and automotive applications. |
| ISA Controls Ltd: Specialist design and manufacture of flow and temperature devices for the oil and gas, process and power generation industries. A Roxboro company. |
| Iskraemeco ECL Ltd: Designed and manufacturing utility meters. |
| Jinggong Instrument: Manufacture of orifice plates, nozzles, venturi tubes and other standard or non-standard throttle devices. From China. |
| Katronic Technologies Ltd.: Manufacture of ultrasonic flow measurement. |
| Key Instruments: Offers flowmeters, optical flow alarms and controllers, for medical, industrial, chemical, and laboratory applications. |
| Krohne: Variable area, magnetic-inductive, ultrasonic, mass flowmeters; level measuring instruments; flow controllers. Manufacturer, global supplier. |
| Kurz Instruments: Manufactures thermal mass flow meters for industrial gases, combustion air, flue gases and other applications. Also, Mass flow control valves, inline elements, transmitters. |
| Laboratory Control Systems Incorporated: Manufactures a line of air flow control and measuring equipment for laboratory, health care and industrial environments. |
| Lambda Square Inc.: Differential pressure flowmeters feature single-piece construction, no moving parts, trouble-free performance. |
| Litre Meter: Manufacture of products for the measurement and control of fluid flow including a variety of flowmeters. |
| M+W Instruments: Manufacture of thermal mass flow meter and controllers. |
| Marsh-McBirney, Inc.: Manufacturer of water and wastewater flowmeters. |
| Mass-Flo: Manufacture of mass flow controllers and advanced material delivery products. |
| Master Meter, Inc.: Manufactures water and wastewater treatment products, including submetering, multi-jets, electromagnetic flow meters, Liquidmaster, flow controllers, automatic meter reading systems. |
| Max Machinery Inc.: Manufactures positive displacement flow meters, urethane processor, fuel system |
| McMillan Company: Manufactures liquid and gas flow sensors, meters, and controllers. Specializing in Teflon liquid flow sensors and controllers for CMP, UHP. |
| Meter Equipment Manufacturing, Inc.: Manufactures industrial flow meters, flow switches, and flow instrumentation with calibration services. |
| Micronics Ltd.: Manufacture ultrasonic, doppler, electromagnetic flow meters and energy meters. |
| Milton Roy Company: Manufactures water and wastewater treatment products for municipal and industrial markets including leak detectors and metering, plunger, gear, rotary pumps. |
| MPB flowmeters: Variable area flowmeters, flow and level switches, calibration cylinders, flow alarms, flow transmitters, sight glasses, specialist gas flowmeters. |
| MSR Magmeter: Manufacturer of magnetic flowmeter for water and water-based liquids in pipes from 3" to 120" diameter. |
| Nixon Flowmeters Ltd: Manufacturers of industrial and hygienic turbine flowmeters and streamflo velocity meters. |
| Panametrics: Manufacturer and worldwide distributor of ultrasonic testing equipment and process control instrumentation. |
| PKP Prozessmesstechnik GmbH: Manufacturer of measuring and monitoring equipment for flow and level as well as the necessary secondary instumentation and accessories. From Germany. |
| Precision Proving Ltd.: Offers on-site proving and calibration of custody transfer and sales meters. Repairs to most types and makes of meter. |
| Proces-Data: Manufacturers flow transmitters, fieldbus based controllers and I/O modules and SCADA software. |
| Process Control Instrument: Manufacturing of flowmeter, rotameter, manometer, level indicators, level switches, orifice plate and assembly. From India. |
| Processautomatic: Manufacturing hygienic and magnetic flowmeters and systems for measuring liquids in the food and beverage industry. From Sweden. |
| Proteus Industries: Manufacturers flow switches and flow meters for industrial cooling systems and WeldSavers for cap off detection on robotic welders. |
| Pumphlo Co.: Manufacture of a flow measurement instrument based on volume change over a period of time. |
| Qualiflow: Innovative solutions for UHP gas systems: mass flow controller, high purity valve, gas systems. From France. |
| R.R.Flowmeters Pvt. Ltd.: Manufacture of flow meters and water meters. |
| Rapidcharge Frigofrance s.a.s.: Manufactures automatically controlled equipment which ensures circuit testing and filling with various types of fluids, for the automobile industry. |
| Ritter Apparatebau GmbH: Manufactures high precision gas meters for laboratory use made out of various superior plastics. |
| Rockwin Flowmeters: Indian company produces turbine flowmeters for applications in industrial and custody transfer industries; sizes from 5 mm to 400 mm. |
| RS Hydro: UK consultancy providing expertise, instrumentation, and calibration for meteorology, hydrology, water flow and chemistry, and varied industrial and environmental applications. |
| Sage Metering Inc.: Manufacture of equipment to monitoring, measuring and control gas mass flow in industrial processes. |
| Schenck AccuRate: Provides bulk solids metering products and solutions for domestic and international powder bulk solids industries and creator of the flexible walled volumetric feeder. |
| SeaMetrics, Inc.: Makes simple, economical flow sensors and controls. |
| Sensus: Manufactures water and wastewater treatment products for the municipal and industrial markets including computer software, meters, turbines, encoders, instrumentation. |
| Sierra Instruments: Manufacture of Mass flow metering equipment. |
| SIMA servis s.r.o.: Measurement and control design, installation. Also, manufactures induction flow meters and calorie counters. |
| Sponsler Company, Inc.: Manufacturer of precision turbine flowmeters and electronics instrumentation for flow measurement application. |
| Superior Products, Inc.: Manufactures orifice plates and other flow measurement differential devices. |
| Systec Controls: Manufacturer of levelmeters and flowmeters for steam, gases and liquids. |
| Teledyne Hastings Instruments: Instruments for the precise measurement and control of vacuum and gas flows. |
| Thompson Equipment Company: Repairs and rebuilds magnetic flowmeters (magmeter) regardless of manufacturer. Replacement and reconditioning of liners (Teflon, poly, rubber, ceramic, composite, fiberglass), electrodes (316 SS, tantalum, platinum, Hastelloy, others). |
| Torbar Flowmeters Ltd: Specialist manufacture of the Torbar averaging pitot flow sensor and Tribar total meter package; for liquids, gas, steam. Manufacturer. |
| Total Control Systems: Manufactures piston and rotary positive displacement flow meters, for use in the petroleum, chemical, industrial, food processing, agricultural industries. |
| TSI Flowmeters: Manufactures gas flowmeters that have high accuracy, fast response, and low pressure drop. This includes a line of general purpose flowmeters as well as a line of OEM flowmeters for embedded applications in medical equipment, fuel cells, and analytical instrumentation |
| TTS Technologies: Online fluid sensors, analyzers and dosing systems. |
| Tuthill Transfer Systems: Distributor of fluid transfer and control systems. |
| United Sensor Corporation: Offers a wide variety of temperature and pressure sensing probes. |
| Vögtlin Instruments AG: Manufacturer of thermal mass meters and controllers (MFC) for gases, and variable area flowmeters for liquids and gases. |
| VPInstruments: Offers compact digital mass flow meters, digital gas meters and oem mass flow sensors. |
| VSE: Manufacturers flow measurement equipment used in process control, plastic, chemical, pharmaceutical, paint, ink, hydraulic automotive industries. |
| Water Specialties: Manufacturer of flow measurement technology, including electromagnetic flow meters and electronic propellers and water meters |
| West Coast Calibration, Inc: Calibration firm performs all types of gas flow, applications of flow controllers and meters. |
| Wyatt Engineering LLC: Manufactures differential flow measurement and control products, including venturi meters, orifice plates and meter runs, and flow nozzles. |
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