Corporate Overview

Accurate flow measurement products, strong client service for 30 years


Primary Flow Signal (PFS) is the corporate hub for a family of businesses linked by common ownership and control. All of these businesses are generally focused on various aspects of high accuracy, high reliability flow measurement technology, equipment, engineering, service, sales, support and distribution.


The principals are active in the management of the business.


The markets we serve include: municipal water and wastewater, industrial, chemical, power generation, oil and gas, EGR automotive, cryogenics and harsh service. We have global reach, serving clients on all continents, with expertise in export via all means of transit.


PFS provides solutions for pressurized process, high accuracy metering applications as well as open channel flow applications that are well suited for all phases of line fluid (i.e., steam, gas and liquid).


The major benefits PFS offers our clients include:

  • The industry’s largest full-time staff of engineers and technicians expert in differential producer type flow metering.
  • Complete in-house design, machining, fabrication, welding, NDE/Radiography, calibration and finishing. Because PFS is an original equipment manufacturer, there are no additional mark-ups, which is usually the case with our competitors that outsource their manufacturing.
  • The resources to commit to LTAs (Long Term Agreements) that guaranty supply and pricing over a span of years, as the client’s needs may require.
  • High speed machining and manufacturing as well as heavy manufacturing.
  • Robust capital base and major banking resources that permit us to undertake contracts of substantial size.
  • Certifications include ISO9001-2008, ASME R, U and S, PED Module H.
  • Multiple locations: Cranston, RI (headquarters); Houston and Odessa-Midland, TX; Tulsa and Altus, OK; Seneca, SC; Edmonton, Alberta, Canada and Beijing, China.
  • Over one million HVT Halmi Venturi meters in service worldwide.
  • Over 30 years of calibration data that demonstrates the accuracy and reliability of PFS products.
  • The entire PFS team takes great pride in the quality, accuracy and reliability of the products and services we provide.
  • Management and shareholders take a long-term view of the business. Therefore the company’s infrastructure and facility investments are substantial and continuous, assuring ever increasing efficiency, capability and capacity.
  • Besides conducting regular business, PFS is heavily involved in research and development in a variety of technologies. The company recently increased those efforts by opening an R&D facility in Seneca, SC to develop new and innovative products to better serve our markets as well as refine, update and improve existing technologies.

It is PFS’s objective to satisfy the needs of our clients with the world's best quality products and services at competitive prices.