North American Manufacturing Co, 287 Boston Post Rd, East Lyme, CT 06333, US

Primary Flow Signal is one of the world's leading resources for accurate and reliable flow meters designed for the measurement of liquid, gas and steam. With more than two decades of experience, Primary Flow Signal has become a predominant supplier of the HVT-Halmi Venturi flow meter to municipalities throughout North America as well as throughout the world. Applications including raw water, finished water in open and closed conduits with special expertise in design of filter arrangements, custody transfer, air, gas and steam measurement have helped to contribute to the firm and leading specific engineers and end users in these markets. Primary Flow Signal, in addition to a family of wholly owned companies and affiliates, provides products and services to a variety of clients including oil and gas, municipal water and wastewater, industrial and commercial. Headquartered in Cranston, R.I., Primary Flow Signal is a privately owned company.