The Leader in Flow Measurement Solutions
Primary Flow Signal offers world-class differential pressure flow elements that ensure the highest quality, accuracy and reliability for liquid, gas, and steam applications.
Flow Measurement
Primary Flow Signal’s patented metering products offer high accuracy, repeatability, and flexibility to meet every customer’s unique needs.
Contract Manufacturing
PFS offers a full-service machining facility with state-of-the-art manufacturing equipment, expert engineering and excellent customer support.
PFS is registered with Sam.gov and with DDTC (Directorate of Defense Trade Controls) ITAR (International Traffic in Arms Regulations).
Our Product Lines
Primary Flow Signal's patented metering products offer high accuracy, repeatability, and flexibility to meet every customer's unique needs.
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Venturi Flow Meter
Wedge-Type Flow Meters
Orifice Flow Meters
PTC 6 / Nozzle Flow Meters
Flow Accessories
Specialty & Custom Solutions
Our Markets & Applications
Primary Flow Signal provides the world's best flow meters for a variety of demanding industries and applications.
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Municipal Water & Wastewater
Oil & Gas
Power Generation
Cryogenic
Industrial
Company Overview
Primary Flow Signal has been producing and engineering flow meters for over 40 years, with headquarters and manufacturing in the United States and Canada. With a reputation for reliability, accuracy and customized manufacturing, PFS has emerged as the preeminent industry player in North America.
The PFS DifferenceRehabilitation & Retro-Fit Solutions
We're proud to offer our unparalleled expertise in differential metering to help customers perform the maintenance and rehabilitation necessary to maximize the long-lasting performance of their flow meters. With a single meter rehabilitation and inexpensive upkeep of peripheral instrumentation, our engineers can help flow meters maintain their fullest potential throughout their entire lifespan.
View All ServicesFeatured News & Resources
The Benefits of a Venturi Meter
By Bruce Briggs, President, Primary Flow Signal, Inc. With the introduction of new measurement technologies and the myriad of performance claims from sales literature, it’s […]The Factors that Impact Venturi Meter Accuracy
Read about the advantages of using a Venturi meter, such as long useful life expectancy, extremely low maintenance issues, no moving parts, and more!Down and Dirty: Tips for Accurate Metering of Digester Gases in Municipal Wastewater Facilities
In the municipal wastewater treatment process, the goal is to remove all biological and chemical contaminants. Municipal facilities utilize several processes, including chemical addition, coagulation, […]
