Venturi Tube
Widely used for large line size applications where permanent pressure loss is critical. Piezometric rings are also provided rather than relying on a single pressure tap point.
View Specifications
BETFLOW Venturi Tube (BF-VT)
Venturi tubes are highly efficient flow meters, offering minimal pressure drop, stable accuracy, durability against erosion, high-pressure recovery, and adaptability to horizontal or vertical installation. Engineered for durability and minimal upkeep, this corrosion-resistant product is effective in applications involving air, water, vapor, steam, gas, chemical processes, sludge, and slurry.
Bhavyam offers all flow elements under the BETFLOW range of products. Design & Engineering done as per Global Standards to meet challenging process demands. Manufacturing all flow metering solutions as per ISO 5167/ ASME MFC 3M/ BS 1042/ AGA 3/ AGA 8/ RW Miller standards.
Specifications
- Venturi Type: machined venturi, fabricated venturi, cast, etc.
- Venturi Material: carbon steel, SS316 & SS316L as standard. SS304, SS304L, Hastelloy, Monel, Inconel, Titanium & others on request
- End Connection Type: butt weld end / flanged
- End Connection Material: ASTM A105 & ASTM A182 F316 as standard. ASTM A182 F304, ASTM A182 F11, ASTM A182 F22 and others on request
- Testing: PMI, hydrotest, dye penetration test, radiography, flow calibration, and others on request
Applications we serve.
- Custody transfer and fiscal metering in oil, gas, and water pipelines
- High flow rate pipelines requiring minimal permanent pressure loss
- Wastewater and large-bore water treatment flow measurement
- Compressor and pump station flow measurement
- Flow measurement in slurries and liquids with moderate solids content
- Power plant feedwater and cooling water flow measurement
- Applications requiring high accuracy combined with low energy loss
Frequently asked questions.
What is a venturi tube and how does it achieve high accuracy with low pressure loss?
A venturi tube is a DP flow element with a gradually converging inlet, a cylindrical throat, and a gradually diverging outlet. The smooth, gradual change in cross-section reduces turbulence and energy loss compared with an orifice plate, while still producing a precise, predictable pressure drop for flow calculation, resulting in high accuracy with a low permanent pressure loss.
When should a venturi tube be chosen over an orifice plate?
A venturi tube is preferred when a lower permanent pressure loss is important, such as in high-flow or energy-sensitive applications, or when higher accuracy is required for custody transfer or fiscal metering. It is also better suited to liquids with a moderate solids content, since its smooth internal profile is less prone to fouling than a sharp-edged orifice plate.
What straight pipe length does a venturi tube require?
Venturi tubes generally require shorter upstream straight lengths than orifice plates for a given beta ratio, as specified in ISO 5167. The exact requirement depends on the beta ratio and the type of upstream fitting.
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