W.A. Kates
Custom Valve Concepts has been manufacturing flow rate controllers for every type of application. From air to zinc hydrosulfate, Kates Controllers provide a simple alternative for numerous complex flow applications.
http://www.wakates.com

AW Company
AW Flow Meters
http://www.awcompany.com/

Syringe Pumps
Industrial heavy-duty positive displacement pulse-less Metering syringe pumps, precise pulseless injection of fluids, at constant output flow or pressure, for chemical, reaction, catalysis and liquid chromatography (HPLC) - Pressure Dynamic Consultants.
http://www.pdcmachines.com/syringe_pumps.asp

McMillan Company
Manufactures liquid and gas flow sensors, meters, and controllers. Specializing in Teflon liquid flow sensors and controllers for CMP, UHP.
http://www.mcmflow.com/

BIF
At BIF we have been developing and manufacturing products for the water/wastewater industry since 1893. Around the globe, thousands of BIF devices and equipment systems are efficiently and accurately doing their job day after day, year after year. We call it Time Tested; and we have the expertise to help find the solutions for your flow measurement applications.
http://www.bifwater.com

West Coast Calibration, Inc
Calibration firm performs all types of gas flow, applications of flow controllers and meters.
http://wccal.com

Kessler-Ellis Products
KEP manufactures HMI Software, MMI, Industrial Displays, Flow Computers, Indicators, Counters, Rate Meters & more.
http://www.kep.com/

Synectic Design Ltd.
A manufacturer of industrial process control and measurement instrumentation and systemsincluding amplifiers, batch controllers, flow meter controllers, portable load meters, calibration tools, data loggers, signal converters, industrial displays and I/O modules.
http://www.synectic.co.uk

Bristol Babcock
Our innovative products meet the measurement, monitoring and control needs of the water, wastewater, oil, gas, and process industries with functionality, quality and uncompromising service.
http://www.bristolbabcock.com/

Muis Controls Ltd. - Flow Meters & Flow Controls
We sell ultrasonic and turbine flow meters used for measuring thermal mass, air, gas water and other liquids.
http://www.muiscontrols.com