VORTAB Flow Conditioners
Reliable Flow Conditioning for Accurate and Repeatable Flow Measurement
Eliminate flow disturbances, reduce straight pipe requirements and improve measurement accuracy across gas, liquid and air applications.
Over 45 Years in Operation
1000's of UK Installations
Supporting 100's of UK Sites
Flow conditioners are used to create a stable, repeatable and swirl-free flow profile, ensuring flow meters perform accurately even in difficult installation conditions.
In real-world industrial systems, ideal installation conditions are rarely achievable. Pipework is often constrained, with elbows, valves, compressors and other disturbances creating asymmetric and unstable flow profiles.
These disturbances can significantly reduce the accuracy and repeatability of flow measurement. VORTAB Flow Conditioners solve this problem by conditioning the flow stream and producing a uniform velocity profile in as little as three pipe diameters.
Allison Engineering supplies VORTAB flow conditioning solutions for a wide range of applications, including Combustion Air Flow Measurement, Biogas Flow Measurement and Flare Gas Metering Using Thermal Mass Flow Measurement, helping ensure accurate, reliable and repeatable measurement performance.
Flow Conditioner Products
VORTAB flow conditioners are available in multiple configurations to suit different pipe sizes, installation constraints and process conditions. Each model is designed to eliminate flow disturbances while maintaining low pressure loss and long-term reliability.
VIP Flow Conditioner (Panel)
Insertion panel flow conditioner designed to eliminate flow disturbances and deliver accurate, repeatable flow measurement with minimal installation requirements.
VEL Flow Conditioner (Elbow)
Elbow flow conditioner combining pipe direction change with flow conditioning for improved measurement accuracy in compact installations.
VMR Flow Conditioner (Meter Run)
Meter run flow conditioner providing a complete pipe section solution for achieving accurate and repeatable flow measurement.
VIS Flow Conditioner (Sleeve)
Insertion sleeve flow conditioner offering a cost-effective solution for improving flow profile and measurement accuracy in existing systems.
Why Choose VORTAB Flow Conditioners
Proven flow conditioning performance
Creates a repeatable, symmetric and swirl-free flow profile for accurate measurement across a wide range of flow conditions.
Minimal straight pipe requirements
Achieves accurate flow conditions in as little as three pipe diameters, solving installation constraints in real-world systems.
Low pressure drop design
Tab-type conditioning technology provides effective flow conditioning without the high pressure losses seen in traditional designs.
Wide application coverage
Suitable for gases, liquids and slurries across industries including oil & gas, chemical, biogas and energy systems.
Flexible installation options
Available as insertion plates, sleeves, meter runs, elbows and field kits to suit virtually any pipe or duct configuration.
Improved process reliability
Helps protect downstream equipment such as flow meters, pumps and compressors by stabilising flow conditions.
Suitable for Multiple Industry Sectors
Biogas & Renewable Energy
Improves measurement performance in biogas and air systems where wet gas and variable flow profiles are common.
Energy & Utilities
Used in combustion air and large duct systems where stable flow measurement is critical for efficiency and control.
Wastewater & Water Treatment
Applicable to aeration air systems and process gas monitoring where balanced flow distribution is essential.
Chemical & Process
Supports accurate process control and measurement in systems with complex piping and variable flow conditions.
Oil & Gas
Used to improve flow measurement accuracy in gas, flare and process applications where installation conditions are often constrained.
Need information or advice?
Speak with our friendly, expert team to discuss your requirements and find out how we can help you.
Full Service UK Solutions
Allison Engineering supports flow measurement and conditioning projects from initial application review through to supply, commissioning and ongoing support. This ensures customers not only select the right products, but get reliable long-term performance.
Specifications & Planning
Application review, flow profile assessment and selection of the correct conditioning solution based on your process conditions.
Supply & Commissioning
Product supply, installation guidance and commissioning support to ensure correct working operation and performance in the field.
Support & Optimisation
Ongoing UK based servicing, calibration, maintenance and technical support to keep systems performing accurately and reliably over time.
Flow Conditioner FAQs
Explore common questions about flow conditioning, including how it works, when it is needed and how to select the right solution.
What is a flow conditioner?
A flow conditioner is a device installed in a pipe or duct to stabilise the flow profile, removing swirl and asymmetry caused by upstream disturbances and ensuring accurate flow measurement.
Why are flow conditioners needed?
Most flow meters require a stable, fully developed flow profile to achieve their specified accuracy. In real installations, this is rarely possible due to limited straight pipe runs, making flow conditioning essential.
How do VORTAB flow conditioners work?
They use a tab-type design to generate controlled vortices that rapidly mix the flow stream, producing a uniform and repeatable velocity profile regardless of upstream disturbances.
How much straight pipe is required with a flow conditioner?
VORTAB flow conditioners can reduce straight pipe requirements to as little as three pipe diameters, compared to 10–30 diameters typically required without conditioning.
Do flow conditioners cause pressure loss?
All flow conditioners introduce some pressure loss, but VORTAB designs are optimised to minimise this while still delivering effective conditioning.
Where are flow conditioners typically used?
They are widely used in combustion air systems, gas flow measurement, biogas systems, flare gas monitoring and process industries where accurate flow measurement is critical.
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Why Trust Allison Engineering
We are committed to delivering the highest standards across the specialist areas we support, combining proven products with practical engineering knowledge and dependable service.
Need Help Improving Flow Measurement Accuracy?
Speak to our team to identify the right flow conditioning solution for your application and ensure reliable, repeatable measurement performance.