HVT Fabricated Venturi Flow Meter (HVT-FV)
+/- 0.50% Uncalibrated Uncertainty
Low Loss, Municipal & Industrial Applications
- Line Size: 1/2″ to 144″
- Head Loss % of Differential: 3.50 to 10.0 percent
- Recommended Pipe Reynolds Number: Greater than 75,000
Industry-Leading Fabricated Venturi Meters
The HVT fabricated Venturi flow meter delivers precise, reliable flow measurement with broad design flexibility. End arrangements (flanged, threaded, welded, victaulic, etc.), along with a wide range of body materials and protective coatings, allow customization to meet pressure, temperature, flow range, fluid type, line size, laying length, and cost objectives.
Similar in operation to an ASME/ISO classical Venturi, the HVT design improves upon traditional geometry with higher accuracy, reduced permanent pressure loss, and a more compact footprint.
Key Benefits & Features of the Fabricated Venturi Meter:
- Design Flexibility: Multiple end arrangements (flanged, mechanical joint, weld end, etc.) and body materials ensure compatibility with diverse piping systems and process requirements.
- Durability & Longevity: Extended product life due to no moving parts and lower susceptibility to erosion, even in demanding environments.
- High-Performance Measurement: Suitable for high-velocity applications, with turndown ratios of 10:1, 20:1, 50:1+ depending on model and type of secondary instrumentation used
- Operational Reliability: No annular chambers eliminate plugging issues, while performance remains unaffected by downstream installation conditions and minimally affected by upstream piping.
- Versatile Laying Lengths & Installation: Compact design allows mounting in any orientation, with shortened laying lengths available to fit limited-space installations.
- Safety & Compliance: Standard NSF-61 potable water–approved coatings support municipal and industrial water applications.
Typical applications include municipal water distribution (raw water, wellfields, treatment plant influent/effluent, pumping stations, reclaimed water, and billing/compliance applications) as well as industrial process flows such as water treatment, oil production, chemical and petrochemical processing, hydrocarbons, LNG, HRSG, steam, and high-velocity liquid or gas measurement.
Specialized options are available to meet unique application needs, including the sealed metering system (HVT-SM) for solids-bearing, contaminated, or high-viscosity fluids. Flow Masters can also be integrated to provide fully automated control, management, and reporting capabilities.
Fabricated Venturi Flow Meter Specifications
Uncalibrated: +/- 0.50% (2 Sigma) beta dependent
Fabricated Venturi Model Types
Model Types
- FVW – Fabricated Venturi, Butt Weld Ends
- FVWFR – Fabricated Venturi, Wafer Ends
- FVWR – Fabricated Venturi, Butt Weld Ends, Run
- FVF – Fabricated Venturi, Flanged
- FVFR – Fabricated Venturi, Flanged, Run
- FVS – Fabricated Venturi, Socket Weld Ends
- FVT – Fabricated Venturi, Threaded Ends
Fabricated Venturi Materials
Common Materials
- Carbon Steel
- Stainless Steel (304 / 316SS)
- Chrome Moly (GR 11, 22, 91)
Other Materials (not limited to)
- Aluminum
- Duplex S/S
- Hastelloy B & C
- Monel
- Stainless Steel (321SS)
- Tantalum
- Titanium
- Zirconium
HVT FV Certifications
PFS is a contributor to various international standards committees, fully supporting our staff’s memberships to these commissions.
Individual products follow relevant industry regulations, including requirements specific to the oil and gas, water/wastewater, and power generation industries.
PFS maintains the following certifications, standards & compliances:
- ISO 9001
- AGA
- ASME S & U
- API
- ANSI
- European Pressure Equipment Directive (PED)
Applications
Municipal Water & Wastewater
Fabricated Venturi flow meters are widely used for raw water, wellfields, and treatment plant influent and effluent measurement. Common applications include pumping stations, reclaimed water systems, and billing or regulatory monitoring where long-term accuracy and durability are required.
Industrial Process Flows
In industrial environments, fabricated Venturis provide reliable flow measurement for water treatment, oil and gas, chemical and petrochemical processes, LNG systems, and other services where resistance to erosion and contamination is critical.
Power Generation
Venturi meters are well suited for high-velocity steam and water measurement in HRSG systems and other power plant processes. Their low permanent pressure loss supports efficient flow monitoring in both conventional and renewable energy facilities.
General High-Velocity Applications
Fabricated Venturis are used wherever consistent measurement of high-velocity liquids or gases is required. Their rugged construction and wide turndown ratios deliver dependable performance with minimal maintenance over long service life.
Trusted Fabricated Flow Meter Expertise Since 1983
Decades of Proven Performance
For over 40 years, PFS has specialized in the design and manufacture of high-accuracy Venturi flow meters, with more than one million of our patented HVT meters installed worldwide. Our vertically integrated process includes in-house engineering, machining, fabrication, welding, calibration, and finishing—ensuring consistency and quality from design through long-term service and rehabilitation.
Engineered Solutions & Lifetime Support
Every system presents unique flow measurement challenges. That’s why PFS offers tailored engineering services supported by a team of Venturi flow specialists. From CFD modeling and hydraulic analysis to flow calculations, calibration, and start-up training, we provide complete technical guidance throughout the lifecycle of your meter. Our rehabilitation and recertification services extend product life while maintaining the accuracy and reliability our meters are known for.
Certifications & Compliance
PFS Venturi flow meters are manufactured to the highest standards of quality and safety. We maintain ASME S & U, ISO 9001, and European Pressure Equipment Directive (PED) certifications, and can supply products with Canadian Registration Number (CRN) when required.
