Overview
Venturi flow meters are widely used flow measurement devices based on Bernoulli’s principle. They measure the flow rate by constricting the flow in a specially designed section of the pipe, creating a pressure differential that correlates to the flow rate. Known for their accuracy, low-pressure loss, and durability, Venturi flow meters are ideal for applications in water treatment, oil and gas, and chemical processing industries.
P&ID Symbol of Venturi Flow Meters
The Venturi flow meter is represented in P&IDs with a specific symbol that denotes its constriction and flow measurement function:
| Symbol | Name | Description |
|---|
 | Venturi Flow Meter | A device that measures flow using a pressure differential created by a constriction. |
- ISA Standard: Adheres to ISA S5.1 standards.
- Symbol Variation: May include details for transmitter integration.
Applications of Venturi Flow Meters
Venturi flow meters are used in various applications requiring accurate flow measurement with minimal pressure loss, including:
- Water Treatment: Measuring flow in pipelines for filtration and distribution systems.
- Oil and Gas: Monitoring flow rates of crude oil and natural gas.
- Chemical Processing: Ensuring accurate measurement of fluid flows in production.
- HVAC Systems: Measuring chilled water flow in thermal energy systems.
Technical Specifications
Features:
- High Accuracy: Typically ±0.5% to ±1.0% of measured value.
- Low Pressure Drop: Energy-efficient design reduces operational costs.
- Durable Construction: Suitable for handling high-pressure and corrosive fluids.
Types of Venturi Flow Meters:
- Classical Venturi: Features a long converging section and gradual recovery.
- Short-Form Venturi: Compact design for space-constrained applications.
- Venturi Nozzle: Ideal for high-velocity and high-temperature flows.
Data Sheet of Venturi Flow Meter
| Attribute | Details |
|---|
| Meter Type | Venturi Flow Meter |
| Design | Classical, Short-Form, Nozzle |
| Operation | Pressure Differential Measurement |
| Standards | ANSI, ISO, AWWA |
| Industries | Water Treatment, Oil and Gas, Chemical Processing |
Material Specifications
| Component | Material Options |
|---|
| Body | Stainless Steel, Carbon Steel, PVC |
| Throat | Stainless Steel, Brass |
| Flanges | Carbon Steel, Stainless Steel |
Technical Specifications
| Attribute | Options |
|---|
| Size Range | 1 inch to 72 inches |
| Accuracy | ±0.5% to ±1.0% |
| Pressure Rating | Up to ANSI Class 600 |
| Temperature Range | -20°F to 400°F (-29°C to 204°C) |
| Flow Velocity Range | 0.1 to 33 ft/s |
| End Connections | Flanged, Welded |
Accessories and Add-Ons
| Accessory | Details |
|---|
| Pressure Taps | Measures pressure differential |
| Signal Transmitter | Converts pressure readings to flow rate |
| Temperature Sensor | For temperature-compensated flow measurement |
Example Configurations
| Configuration | Details |
|---|
| Classical Venturi | 6-inch Meter, Stainless Steel Body, Flanged Ends |
| Short-Form Venturi | 4-inch Meter, Carbon Steel Body, Welded Ends |
| Parameter | Details |
|---|
| Warranty | 12-36 Months |
| Certifications | ISO 9001, CE |
| Testing | Factory Calibrated, Performance Verified |
Micro Data Sheet for Venturi Flow Meters
| Attribute | Value |
|---|
| Material | Stainless Steel |
| Size | 6 inches |
| Accuracy | ±0.5% |
| Pressure Rating | ANSI Class 300 |
| End Connection Type | Flanged |
Vendor List for Venturi Flow Meters
- Emerson: Supplies durable and accurate Venturi flow meters for industrial applications.
- KROHNE: Offers classical and short-form Venturi flow meters.
- Badger Meter: Specializes in Venturi flow meters for water treatment and HVAC systems.
Explore vendors for venturi flowmeters in your region using Mails AI.
Cost Data for Venturi Flow Meters
| Parameter | Specification | Estimated Cost |
|---|
| Material | Carbon Steel | $1,500 - $5,000 |
| Type | Classical Venturi | $2,000 - $8,000 |
| Size (Diameter) | 6 inches | $3,000 - $10,000 |
For accurate pricing of venturi flowmeters, access cost data using Cost AI.
3D Model of Venturi Flow Meters
To integrate this 3D model of a venturi flowmeter in a Process Plant use Model Builder. Download venturi-flowmeter.json. Choose File > Import and use the downloaded file to add the model to the scene. Choose Add > Light > Directional to add directional light.
Conclusion
Venturi flow meters provide accurate and reliable flow measurement with minimal pressure loss, making them a preferred choice across industries. Their robust design and versatility ensure durability and efficiency in demanding applications. Use this guide alongside tools like Micro Data Sheets, Vendor Lists, and Cost AI to make informed decisions and optimize your projects.
