What Are the Different Types of Orifice Plates?
Flowell manufactures and supplies solutions for the different types of orifice plates used in industrial flow measurement. Orifice plates are widely used to create a measurable pressure drop in a pipeline so operators can calculate flow rate in gas, liquid, and steam service. The type of plate selected matters because different process conditions call for different bore styles, installation preferences, and maintenance considerations. Buyers comparing standard product options can review universal orifice plates, evaluate complete orifice plate flow meter systems, or reach out through contact us for application help.
Not every line sees the same process conditions. Clean liquids, gases, steam, viscous media, and solids-bearing fluids all behave differently in service. That is why several plate designs are used across industry. The right choice depends on what is moving through the line, how stable the installation is, how much pressure loss can be tolerated, and how much maintenance access matters during operation.
What are the different types of orifice plates?
The different types of orifice plates include concentric, eccentric, segmental, quadrant edge, paddle-type, and other specialty configurations used for specific flow conditions. Each type is built to handle a particular balance of fluid behavior, installation needs, and measurement goals. Some are best for clean service, while others are better suited for viscous fluids, entrained solids, or applications where easier handling is important.
For buyers who want a broader overview of the product category, Flowell also provides additional information on orifice plates. If you want to understand the role these devices play in actual operation, see what is the purpose of an orifice plate.
Different types of orifice plates and why selection matters
Selection affects more than fit. The plate type can influence how well the installation handles solids, how easy it is to maintain, how stable the readings remain, and how suitable the design is for the actual media in the line. A design that works well in a clean gas application may not be the best answer for a slurry or heavy, viscous service.
Concentric orifice plate
A concentric orifice plate is one of the most common designs in differential pressure flow measurement. It uses a centered circular bore aligned with the axis of the pipe. This design is often used where the service is relatively clean and where a symmetrical flow restriction supports dependable measurement.
Concentric orifice plate applications
- General fluid flow measurement
- Clean liquids
- Gas service
- Steam applications
- Systems where centered bore geometry is well suited to the process
Advantages of concentric orifice plates
- Widely used and well understood in industry
- Practical for many clean-service applications
- Compatible with a broad range of installations
- Often a cost-effective choice
Concentric orifice plate considerations
Concentric plates are often best suited to cleaner service. In lines with solids, buildup, or more difficult media behavior, another design may offer better long-term practicality.
Eccentric orifice plate
An eccentric orifice plate uses an off-center bore placed closer to the pipe wall. This helps certain fluids and suspended material move through the line more effectively than they would with a centered bore. Eccentric plates are often considered where clogging or solids accumulation is more likely to become a problem.
Eccentric orifice plate applications
- Viscous liquid service
- Flows containing suspended solids
- Slurry-related applications
- Lines where buildup risk needs to be reduced
Advantages of eccentric orifice plates
- Helps reduce blockage risk in more difficult services
- Better suited to some non-clean media conditions
- Can offer a more practical option where centered bores are not ideal
Eccentric orifice plate considerations
Eccentric designs can be a better fit for certain fluid conditions, but the full installation still needs to be reviewed carefully. Media behavior, orientation, and overall system layout all matter.
Segmental orifice plate
A segmental orifice plate uses a partial opening shaped like a segment of a circle. This design is often selected for heavier fluids or particulate-laden service where freer passage through part of the line helps reduce blockage concerns. In certain process environments, that can improve reliability and reduce maintenance headaches.
Segmental orifice plate applications
- Wastewater-related service
- Dirty liquids
- Slurry handling
- Crude or process streams containing sediment or debris
Advantages of segmental orifice plates
- Well suited for particulate-bearing media
- Can reduce clogging and fouling concerns
- Practical in dirtier operating conditions
Segmental orifice plate considerations
As with any design, segmental plates should be chosen according to the real service conditions. What works best in a solids-bearing line may not be the best choice for cleaner, more stable media.
Quadrant edge orifice plate
A quadrant edge orifice plate uses a rounded inlet edge rather than a sharp-edged bore. This design is often associated with more viscous fluid service because the bore profile can help support smoother flow characteristics under those conditions.
Quadrant edge orifice plate applications
- High-viscosity liquids
- Heavy crude service
- Molasses and similar process fluids
- Chemical applications involving thicker media
Advantages of quadrant edge orifice plates
- Useful in certain viscous-flow environments
- Can offer improved fit for heavier media
- Supports service where sharp-edged designs may not be ideal
Quadrant edge orifice plate considerations
These plates are generally chosen for specific service behavior. They are not automatically the right answer for low-viscosity fluids or general-purpose gas service.
Paddle-type orifice plate
Paddle-type orifice plates are designed with handling and installation workflow in mind. They are commonly reviewed where the plate may need to be removed, inspected, or changed more conveniently than some other configurations allow. That makes them useful in certain maintenance-driven environments and other situations where accessibility matters.
Different types of orifice plates for easier handling
Among the different types of orifice plates, paddle-type designs often stand out where easier insertion, removal, or maintenance access is a practical concern. Buyers who want to review this option directly can see paddle-type orifice plates.
Paddle-type orifice plate applications
- Installations where plate handling matters
- Maintenance-focused environments
- Situations requiring easier changeout access
- Applications where convenience during servicing is important
Paddle-type orifice plate considerations
The best choice still depends on the process conditions, surrounding hardware, and the goals of the measurement setup. Handling convenience is important, but it should be weighed alongside flow conditions and overall installation requirements.
Universal type orifice plates
Universal type orifice plates are often selected as a practical option for many general-purpose differential pressure applications. They are a strong fit where buyers want a proven plate style matched to industrial service conditions and dependable machining quality.
For direct product details, see universal orifice plates. Buyers who are also comparing complete measurement assemblies can review orifice plate flow meter systems.
Other factors that affect which orifice plate type is best
Type selection should never be based on the plate shape alone. Real operating data matters. Media properties, line size, internal diameter, pressure, temperature, flow range, allowable pressure loss, and the surrounding installation all need to be considered together.
Important selection factors
- Fluid properties: Clean or dirty media, viscosity, solids content, and corrosion potential all affect what makes sense.
- Operating conditions: Pressure, temperature, and expected flow range help determine suitability.
- Installation geometry: Straight run, upstream disturbances, and surrounding hardware influence measurement stability.
- Maintenance needs: Access, inspection routines, and replacement workflow can shape the best choice.
- Material requirements: The plate alloy should match the actual service conditions.
In some applications, supporting hardware can be just as important as the plate itself. Buyers may also need to review orifice flange unions, RTJ plate holders, meter tubes, and straightening vanes. In certain lines, products such as bleed rings, condensate chambers, and carbon and stainless steel strainers may also come into the conversation.
Different types of orifice plates compared
| Type | Typical Fit | Common Strength |
|---|---|---|
| Concentric | Clean liquids, gases, and steam | Widely used and practical for general clean-service measurement |
| Eccentric | Viscous or solids-bearing service | Helps reduce clogging concerns |
| Segmental | Dirty fluids and heavier particulate service | Supports freer passage for debris-laden media |
| Quadrant Edge | Highly viscous liquids | Rounded bore profile suited to thicker media |
| Paddle-Type | Applications where handling matters | Easier servicing and changeout in certain installations |
| Universal Type | General-purpose industrial use | Strong fit for many standard differential pressure applications |
Where the different types of orifice plates are used
The different types of orifice plates are used across oil and gas, chemical processing, utilities, water treatment, power generation, and other industrial environments where dependable flow measurement matters. The specific design depends on how clean or difficult the media is, how much maintenance access is needed, and how the overall installation is built.
For more industry-specific context, see what industries use orifice plates. For a broader overview of device selection, Flowell also covers the different types of flow meters and key factors to consider when choosing the right flow meter.
How to get help choosing the right orifice plate type
If you are comparing designs for a new project or a replacement part, the best starting point is the actual operating data. Line size, schedule, media, pressure, temperature, expected flow range, allowable pressure drop, and any existing hardware details all help narrow down the right plate design.
- Pipe size and schedule
- Minimum, normal, and maximum flow
- Media type and operating conditions
- Material requirements
- Existing holder, flange, or meter run details
- Any print, drawing, or legacy dimensions available
Once those details are ready, you can reach out through contact us or start with sizing support. You can also return to the Flowell homepage to browse more flow measurement products.
Frequently asked questions about the different types of orifice plates
What are the main different types of orifice plates?
The main different types of orifice plates include concentric, eccentric, segmental, quadrant edge, paddle-type, and universal-type designs, each suited to different operating conditions and maintenance needs.
Which orifice plate type is best for clean fluids?
Concentric designs are commonly used in cleaner services where a centered bore is a good match for the process conditions.
Which orifice plate types are better for solids or viscous service?
Eccentric, segmental, and quadrant edge designs are often reviewed when solids, viscosity, or difficult media behavior make a standard centered bore less practical.
Are paddle-type orifice plates good for easier maintenance access?
They are often considered in applications where handling, removal, or servicing convenience is more important than it would be in a fixed, less frequently accessed installation.
Where can I compare product options from Flowell?
You can compare universal orifice plates, review paddle-type orifice plates, explore orifice plates, or look at orifice plate flow meter systems for broader application context.
Talk with Flowell about orifice plate types
If you need help choosing between the different types of orifice plates for a specific application, contact Flowell with your operating details. You can also review orifice plates, compare universal orifice plates, explore orifice plate flow meter systems, or return to the homepage for more technical resources.