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Daniel Venturi Tubes
Corrosion-resistant and virtually maintenance free, Daniel™ Venturi Tubes are an ideal flow measurement solution for non-viscous fluids that contain hydrocarbons and other potentially corrosive elements, including LNG.
This low-pressure metering device provides constant accuracy, greater capacity, high-pressure recovery and minimal permanent pressure loss and is available in a variety of ANSI ratings to ensure reliable, sustained performance for a variety of applications. Venturi tubes can be installed horizontally, vertically or any angle in between and have shorter upstream piping requirements to simplify installation and reduce costs.
Daniel Venturi Tubes


Measurement Type
Differential pressure
Fluid Type
Gas, liquid hydrocarbons, air, water, vapor, steam, sludge, slurries
Discharge Coefficient Uncertainty
Uncertainty ±0.25-0.50%
Line Size
2-in to 72-in (50-mm to 1830-mm)
Max. Operating Pressure
ANSI 2500
Permanent Pressure Loss
10% to 15% of DP signal created
Process Temperature Range
-260°F to +1000°F (-162°Cto +538°C )
Flange Type
Flanged RTJ, Raised Face, Beveled End up to ANSI 2500
Process Wetted Material
Carbon Steel, Alloy Steel, Stainless Steel


  • Accurately measure a variety of fluids, including LNG, water, vapor, steam, gas, chemicals, slurries and sludge
  • Achieve lower permanent pressure loss (~5 to 15% of differential pressure) and greater capacity vs. other devices
  • Realize superior performance in highly corrosive environments with low susceptibility to erosion
  • Ensure reliable, sustained performance by selecting from a wide variety of materials and coatings
  • Simplify installation and reduce costs with short upstream piping requirement
  • Increase design flexibility with ability to install vertically, horizontally or at an angle
  • Virtually eliminate maintenance time and costs with no moving parts and simple configuration
  • Rely on manufacturing in strict accordance with ASME MFC-3M and ISO 5167 specifications