PFS Cast Iron/Ductile Iron Venturi Flow Meters (HVT-CI, HVT-DI)

The PFS Cast Iron/Ductile Iron Venturi Flow Meters deliver accurate, reliable flow measurement for pressurized liquids, gases, contaminated fluids, and solids-bearing line fluids. The HVT-CI cast iron model supports municipal water, wastewater, flow control, air, and gas applications. The HVT-DI ductile iron model suits higher line pressure applications.

These iron Venturi flow meters use a proven flow element design with no moving parts. As a result, they provide long service life, dependable repeatability, and lower maintenance needs. They also help reduce plugging concerns because they do not use annular chambers.

Westech Industrial supplies PFS HVT-CI and HVT-DI Venturi flow meters Canada wide. Our team can support sizing, product selection, service needs, and project coordination. We can also assist with custom fabrication for panels, enclosures, and integrated flow measurement packages.

PFS Cast Iron/Ductile Iron Venturi Flow Meters (HVT-CI, HVT-DI)

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Description

Reliable Venturi Flow Measurement

The PFS HVT-CI and HVT-DI iron Venturi flow meters provide accurate flow measurement in demanding line conditions. They handle liquids and gases, as well as contaminated and solids-bearing fluids. Therefore, they suit many water, wastewater, and industrial flow applications. The HVT-CI model has a strong history in municipal water and wastewater service. Meanwhile, the HVT-DI model provides an option for higher line pressure applications.

Long Service Life with No Moving Parts

The HVT design has no moving parts. This helps reduce wear, maintenance, and downtime over the product’s service life. In addition, the design offers lower susceptibility to erosion. That makes it a strong fit for high-use systems where reliable measurement matters every day. The product also carries a 25-year warranty, which supports long-term project planning.

Designed for Challenging Flow Conditions

These cast iron and ductile iron Venturi flow meters can measure harsh or contaminated line fluids. They can also support solids-bearing flow. For sewage flow measurement, selected configurations can use remote diaphragm seals. This helps reduce concerns related to blocked pressure taps. As a result, operators can achieve accurate and cost-effective measurement in difficult wastewater applications.

Strong Accuracy and Repeatability

The HVT design offers repeatability of ±0.1%. Basic accuracy reaches ±0.25% when calibrated and ±0.50% at 2 Sigma when uncalibrated. This level of performance helps operators monitor process flow, manage distribution, and support billing-related applications. The meter can also achieve turndown ratios of 10:1, 20:1, 50:1, or greater. Final performance depends on the model, meter design, and secondary instrumentation.

Flexible Installation and Flow Control Options

The HVT Venturi mounts in any position, which gives designers greater layout flexibility. It also has no downstream installation effect and minimal upstream effect. In addition, the design works well with close-coupled butterfly valves. This supports efficient rate-of-flow control, including filter effluent control applications.

Materials Built for Water and Wastewater Service

The HVT-CI and HVT-DI models use cast iron or ductile iron construction. The throat section uses 304 or 316 stainless steel sleeving. NSF-61 approved coatings for potable water service come standard. These material options support clean water, reclaimed water, and wastewater applications.

Integrated System Support

PFS HVT Venturi flow meters can work with a Flow Master system for integrated control, management, and reporting. These systems can include an enclosure, pressure instrumentation, temperature instrumentation, and recording instrumentation. Westech Industrial can help customers review the full measurement package and support custom fabrication when the project requires a panel, enclosure, or packaged solution.

Applications

PFS HVT-CI and HVT-DI iron Venturi flow meters suit municipal and industrial flow applications. They provide strong performance where accuracy, low maintenance, and long service life matter.

  • Filter effluent
  • Pumping stations
  • Raw water and wellfields
  • Water treatment plant influent and effluent
  • Water distribution and billing
  • Reclaimed water
  • Sewage collection systems
  • Flow control applications
  • Air and gas applications
  • Contaminated or solids-bearing line fluid applications

Documents

PFS_Cast Iron Ductile Iron Venturi Flow Meters (HVT-CI, HVT-DI)_Data Sheet_July2026_Westech.pdf

PFS_Cast Iron Ductile Iron Venturi Flow Meters (HVT-CI, HVT-DI)_Capacity Tables_July2026_Westech.pdf

Manufacturer info

Primary Flow Signal designs and manufactures flow measurement solutions for liquid, gas, and steam applications. Its product offering includes Venturi flow meters, wedge-type meters, orifice flow elements, flow nozzles, and custom-engineered differential pressure measurement products for industries such as water and wastewater, oil and gas, power generation, industrial processing, automotive, and cryogenic service.

SPECS

Product Models:
HVT-CI Cast Iron HVT Venturi; HVT-DI Ductile Iron HVT Venturi.
Additional Model Options:
HVT-SMC, HVT-SMD, HVT-FCC, HVT-FCD, BCI, and BDI configurations.
Line Size:
4 to 72 inches.
Larger Line Sizes:
Contact Westech Industrial for project review.
Head Loss:
3.50% to 10.0% of differential.
Basic Accuracy:
±0.25% calibrated; ±0.50% at 2 Sigma uncalibrated.
Repeatability:
±0.1%.
Minimum Pipe Reynolds Number:
Greater than 75,000 for basic accuracy.
Beta Range:
0.30 through 0.75.
Materials:
Cast iron or ductile iron.
Throat Section:
304 or 316 stainless steel sleeved throat section.
Coating:
NSF-61 approved potable water coatings are standard.
Installation Position:
Mounts in any position.
Required Straight Piping:
Minimal upstream piping requirements may vary by application; no downstream installation effect.
Service Functional Limits:
Liquid, gas, contaminated, and solids-bearing line fluids.
Sealed Sensor Compatibility:
Can utilize sealed diaphragm sensors.
Useful Service Life:
Very long.
Warranty:
25 years.
Availability:
Canada wide through Westech Industrial.

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PRODUCT FAQ's

What is the difference between the HVT-CI and HVT-DI models?
The HVT-CI uses cast iron construction and suits many municipal water and wastewater applications. The HVT-DI uses ductile iron construction and supports higher line pressure applications.
Can these Venturi flow meters handle wastewater or solids-bearing fluids?
Yes. The HVT design supports contaminated and solids-bearing line fluids. Certain configurations can also use remote diaphragm seals to help reduce blocked pressure tap concerns.
Are PFS iron Venturi flow meters suitable for potable water?
Yes. NSF-61 approved potable water coatings come standard, which supports potable water applications.
Do these meters require a specific installation position?
No. The HVT Venturi can mount in any position. This gives project teams more flexibility during system design.
Can Westech Industrial support sizing and product selection?
Yes. Westech Industrial can help review the application, flow requirements, line size, materials, and instrumentation needs. We can also support service requirements and project coordination.
Can Westech provide custom fabrication for an integrated flow measurement package?
Yes. Westech Industrial can assist with custom fabrication for panels, enclosures, and packaged flow measurement solutions. We can also help integrate instrumentation when the application requires a more complete system.