Primary Flow Signal, Inc. was founded by the late Mr. Dezsoe Halmi, one of the foremost experts in flow measurement, who is credited with inventing the UVT (universal venturi tube) and developing numerous patented products. These innovations, along with an unwavering dedication to technical support and customer service, formed the basis on which the company was built.

Mr. Halmi's legacy of innovation and dedication has helped the company earn a predominant position and reputation in the field of accurate and reliable flow measurement, with proponents and satisfied users throughout the world. The company has continued to thrive and expand on a global basis, continuing its resolute commitment to the manufacture of high quality, extremely accurate flow measurement products.

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