Large line size offers verifiable accuracy and unparalleled service life

Cranston, RI, USA, September 4, 2014 – Primary Flow Signal (PFS), the leading designer and manufacturer of innovative, durable, and accurate flow-metering solutions, has successfully completed the manufacturing and independent laboratory flow calibration of a 42” Halmi Venturi high pressure model HVT-FVF flow meter for a large water facility being constructed in the western U.S. Once installed, the facility will have the most accurate meter solution available at this scale at +/-0.25% of actual rate of flow, as well as a flow element that will provide decades of reliable service due to the fact that the meter was built with 1.0” thick 316 stainless steel.

Primary Flow Signal’s Halmi Venturi Flow Meters are designed, developed, and perfected by Dezsoe Halmi, the company’s founder. Offered exclusively by the company, Halmi Venturi Flow Meters provide the highest accuracy and reliability for flow measurement of pressurized line fluids, including liquids, gases, and steam, as well as high-viscosity line fluids, solids-bearing line fluids, and harsh or contaminated line fluids. PFS can custom manufacture the Halmi Venturi Flow Meters in a wide variety of line sizes and configurations to fit virtually any application requiring accuracy of +/-0.50% bench calibrated and +/-0.25% laboratory flow calibrated.

“Primary Flow Signal has more than 1000 Halmi Venturi meters ranging in size from 36.0” up to 180.0” diameter that are supported by our proud history of engineering and manufacturing large line size meters for water applications throughout the world ,” said Bruce Briggs, President of Primary Flow Signal. “This is yet another example of our ability to derive accuracy statements from decades of flow test data and field experience with our Halmi Venturi Flow Meters. No other meter manufacturer can make these claims, nor can they reliably build a differential pressure meter to the specifications demanded by our customers.”

Halmi Venturi Flow Meters are rugged, reliable, differential pressure measurement devices, designed to measure full pipe flow of gases or liquids over extreme temperature ranges, as well as contaminated liquids, sludges, slurries, and sewage. Halmi Venturi Flow Meters are available in a variety of materials, including a cast iron pressure vessel, fabricated (welded) metal pressure vessel, plastic insert style, welded insert, and welded-in pressure vessel. Additionally, the Halmi Venturi Flow Meters is offered cast in place (usually concrete and typically rectangular) depending upon application requirements.

PFS’s metering solutions are designed and manufactured in the United States by the industry’s largest team of specialized hydraulic engineers, backed by extensive laboratory and field testing, ISO 9001-2008 certification, and efficient vertically-integrated facilities. PFS’s products deliver a level of differential metering accuracy, reliability, and versatility, coupled with unparalleled engineering support, simply not available from other metering solutions.


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144.0 Inch HVT Installation