Overview
Flow orifices are widely used devices for measuring and controlling fluid flow by creating a pressure drop across a constricted section in the pipeline. Based on Bernoulli’s principle, flow orifices are cost-effective, simple, and robust solutions for various industries such as oil and gas, water treatment, and chemical processing.
P&ID Symbol of Flow Orifices
The flow orifice is represented in P&IDs with a specific symbol that denotes its pressure differential measurement functionality:
| Symbol | Name | Description |
|---|
 | Flow Orifice | A device that measures flow using a pressure drop across a restriction. |
- ISA Standard: Adheres to ISA S5.1 standards.
- Symbol Variation: May include details for transmitter integration.
Applications of Flow Orifices
Flow orifices are used in applications requiring accurate and cost-effective flow measurement, including:
- Oil and Gas: Monitoring flow in pipelines for crude oil and natural gas.
- Water Treatment: Measuring flow rates in filtration and distribution systems.
- Chemical Processing: Ensuring accurate flow measurement in production.
- Power Generation: Measuring steam flow in high-pressure systems.
Technical Specifications
Features:
- Simple Design: Easy to install and maintain.
- Cost-Effective: Suitable for budget-sensitive applications.
- Robust Construction: Handles high-pressure and high-temperature fluids.
Types of Flow Orifices:
- Concentric Orifice Plate: A standard design for most applications.
- Eccentric Orifice Plate: Used for slurries and fluids with entrained solids.
- Segmental Orifice Plate: Suitable for fluids with high levels of suspended solids.
Data Sheet of Flow Orifice
| Attribute | Details |
|---|
| Meter Type | Flow Orifice |
| Design | Concentric, Eccentric, Segmental |
| Operation | Pressure Differential Measurement |
| Standards | ANSI, ISO, AWWA |
| Industries | Oil and Gas, Water Treatment, Chemical Processing |
Material Specifications
| Component | Material Options |
|---|
| Body | Stainless Steel, Carbon Steel, PVC |
| Orifice Plate | Stainless Steel, Monel, Brass |
| Seals | PTFE, Graphite |
Technical Specifications
| Attribute | Options |
|---|
| Size Range | 1 inch to 48 inches |
| Pressure Rating | Up to ANSI Class 600 |
| Temperature Range | -20°F to 800°F (-29°C to 427°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 |
|---|
| Concentric Orifice | 6-inch Plate, Stainless Steel, Flanged Ends |
| Segmental Orifice | 4-inch Plate, Carbon Steel, Welded Ends |
| Parameter | Details |
|---|
| Warranty | 12-36 Months |
| Certifications | ISO 9001, CE |
| Testing | Factory Calibrated, Performance Verified |
Micro Data Sheet for Flow Orifices
| Attribute | Value |
|---|
| Material | Stainless Steel |
| Size | 6 inches |
| Accuracy | ±0.5% |
| Pressure Rating | ANSI Class 300 |
| End Connection Type | Flanged |
Vendor List for Flow Orifices
- Emerson: Supplies durable and accurate flow orifices for industrial applications.
- KROHNE: Offers a variety of orifice plates for specialized applications.
- Badger Meter: Specializes in cost-effective orifice plates for water treatment systems.
Explore vendors for flow orifices in your region using Mails AI.
Cost Data for Flow Orifices
| Parameter | Specification | Estimated Cost |
|---|
| Material | Carbon Steel | $500 - $2,000 |
| Type | Concentric Orifice | $600 - $3,000 |
| Size (Diameter) | 6 inches | $800 - $4,000 |
For accurate pricing of flow orifices, access cost data using Cost AI.
3D Model of Flow Orifices
To integrate this 3D model of a flow orifice in a Process Plant use Model Builder. Download flow-orifice.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
Flow orifices are simple, cost-effective, and robust solutions for accurate flow measurement in industrial systems. Their versatility and durability make them a preferred choice for engineers. Use this guide alongside tools like Micro Data Sheets, Vendor Lists, and Cost AI to make informed decisions and optimize your projects.
