Our History

For more than 5 decades, Orange Research has delivered rugged, reliable solutions for flow and differential pressure measurement. We are a recognized world leader in differential pressure gaugesflow gaugesswitchestransmitters and a wide variety of differential pressure measurement and monitoring solutions.

The company’s beginnings are rooted in the entrepreneurial spirit of its founder, Les Hoffman. An innovative engineer working in an old New England style barn in his backyard, Les’ enthusiastic, high-energy approach led him to develop the “Filter Fink”. This indicator would tell the user when a filter needed to be cleaned or replaced.

Soon Les developed solutions for flow and level applications using a similar differential pressure gauge design. Those early ideas developed into an extensive line of differential pressure measurement products, including gauges, switches and transmitters. Within a few years Orange Research had several distributors and customers nationwide, with a concentration in oil and gas, petrochemical, fluid power, compressors and cryogenic tanks.

We look forward to working with you in designing a differential pressure or flow monitor for your specific needs.

Flow gauges with switches and flow transmitter options, utilizing the same magnetic sensor, were then developed to measure liquid or air flow.

The product line grew quickly, expanding the customer base along with the types of industries that Orange Research was able to serve.

Today Orange Research remains a family-owned business, located in Milford, Connecticut, about an hour drive from New York City. We continue to manufacture the highest quality differential pressure and flow measurement products, including differential pressure gaugesflow gauges, and transmitters that are recognized for precision and reliability.

Contact us today for more on our flow and differential pressure measurement and monitoring products. Our staff of engineers, manufacturing personnel and customer service professionals are ready to deliver the solutions you need for your application.

Paul Hoffman, Les Hoffman’s son, was with Orange Research since its inception in 1963.

When Paul was 13, he started doing odd jobs in his father’s basement, where the company began. This led to working at the company during his high school and college years, as the company continued to grow.

Paul received his Bachelor’s degree in 1973 from the University of New Haven in Business Administration. In 1978 Paul became General Manager.  In 1989, Paul was named President & CEO of Orange Research. He retired from the company in 2021.

As President, Paul made a number of structural changes to the company, investing in people and equipment that would allow for strategic growth and a more modern approach to operations. He led the company’s Lean improvement efforts and directed the company to develop many new products that appealed to existing and new customers.

Paul was on the boards of numerous manufacturing associations and the local Chamber of Commerce, often serving as president. He also served on various State of Connecticut and local industry and manufacturing advisory committees.

Today Orange Research remains a family-owned business, located in Milford, Connecticut, about an hour drive from New York City. We continue to manufacture the highest quality differential pressure and flow measurement products, including differential pressure gaugesflow gauges, and transmitters that are recognized for precision and reliability.

Contact us today for more on our flow and differential pressure measurement and monitoring products. Our staff of engineers, manufacturing personnel and customer service professionals are ready to deliver the solutions you need for your application.

Global Leader in Manufacturing

We design, customize and apply innovative engineering solutions.

WARNING: Some of our products contain Nickel, a chemical known to the State of California to cause cancer. For more information go to: www.p65warnings.ca.gov