CV Classical Venturi

+/- 1.00% to 1.50% Uncalibrated Uncertainty
Clean Liquids and Gases

  • Line size: 2 to 48 inches
  • Head loss % of Differential: 10 to 25 percent
  • Recommended pipe Reynolds number: Greater than 200,000 for basic accuracy. Consult PFS for lower Reynolds use.

Description

Overview

The Classical Venturi flow meter design provides longer lasting accuracy and lower permanent pressure loss than orifice and nozzle style meters, reducing maintenance and operating costs. The Classical Venturi meter design is suitable for flow rate measurement of clean liquids, gases, and steam, particularly if low pressure loss is desired. Classical Venturi flow meter design provides longer lasting accuracy and lower permanent pressure loss than orifice type meters, reducing maintenance and operating costs. This meter is suitable for flow rate measurement of aggressive and non-aggressive liquids, gasses, and steam especially if low pressure loss is desired.

The Classical Venturi flow meter restricts the flow at its throat, increasing the velocity of the fluid, and measures the pressure difference of the unrestricted flow and restricted flow. The meter’s throat can be designed to meet the flow measurement application optimizing the meter’s accuracy and permanent pressure loss.The Classical Venturi flow meter restricts the flow at its throat, increasing the velocity of the fluid, and measures the pressure difference of the unrestricted flow and restricted flow. The meter’s throat can be designed to meet the flow measurement application optimizing the meter’s accuracy and permanent pressure loss.

Specifications

Line Size
2 to 48 inches. Larger sizes are available.
Head loss % of Differential
10 to 25 percent
Basic Accuracy (% of Total dP)
(Calibrated) +/- 0.25 (Uncalibrated) +/- 0.75 to 1.50%
Minimum pipe Reynolds number
Must be greater than 200,000 for basic accuracy. Consult PFS for lower Reynolds use.
Required Straight Piping
Consult PFS for required US & DS piping based on your specific application
Beta Range
0.30 through 0.75
Useful Service Life
Medium to Long
Service Functional Limits
Clean Liquids, Gas and Steam
Applications
Steam and Water, Hydrocarbon, Liquids and Gas Process, Water Treatment and distribution, Oil production and refining, Chemical and Petrochemical industry, High Velocity Process
Common Materials
Carbon Steel, Stainless Steel, Chrome Moly
Other Available Materials not limited to
Aluminum, Zirconium, Hastelloy, Monel, Duplex SS, Titanium, Tantalum, 321SS

Support and Service

In addition to a wide range of differential producing Venturi flow meters, orifice plates, WedgeType™ flow meters, and open channel flow elements, PFS provides comprehensive, specialized services for new and existing flow meters, including rehabilitation, hydraulic analysis, and full engineering support.

Certifications

ISO 9001, ASME S&U, PED Certified, CRN.

See all certifications