FCI-Fluid Components International

FCI-Fluid Components International manufactures air/gas flowmeters, liquid/gas flow switches and flow conditioners. In both municipal and industrial WWT plants, FCI is the leading supplier in aeration and digester gas flow measurement applications, so you can install with total confidence and assurance that you are getting the right product, backed by FCI’s worldwide service and support.


1755 La Costa Meadows Drive
San Marcos, CA 92078
United States
Toll-free: 800.854.1993
Phone: 760.744.6950
Fax: 760.736.6250


FCI Capabilities
Flow Conditioning
Meter Calibration
Calibration Verification

Industry News + Articles

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Water treatment plant chlorine tanks

Chlorine Flow Measurement

The water municipality of a mid-size city in the Western region of the U.S. serving a population of approximately 180,000 people needed to address a chlorine...
Improving Gas-to-Energy Efficiency

Improving Gas-to-Energy Efficiency

The Rahway Valley Sewerage Authority (RVSA), which operates a large wastewater treatment plant in New Jersey, embarked on a green cogeneration waste-to-energy project to...

Improved Flowmeter Line Features Digital Bus Communication

FCI’s compact thermal flowmeter line has been expanded and improved with an advanced electronics design that features the addition of HART version 7 digital bus...

Flow Switch Protects Pumps & Extends Service Life

The FlexSwitch FLT93 pump protection flow switch from Fluid Components International (FCI) detects dry running conditions caused by irregular liquid flows or slurries.

Flow Conditioner Eliminates Swirl for Accurate Measurement

Wastewater treatment engineers who cannot find room for the recommended straight pipe run needed by electromagnetic flowmeters in sewage lift stations will find that the...

Product Categories

Flow Metering; Flowmeters; Meters, Flow; Sensors, Flow; Instrumentation