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Created on 02.03

Can ball valves be used to regulate airflow?

Can a ball valve be used to regulate flow? Technically, yes, but it's not always the optimal solution.
Standard ball valves. They are designed for on/off operation. They work excellently in both fully open and fully closed positions. However, in intermediate positions, they can cause turbulence, wear, and reduced flow control.
In this regard, there are special types of ball valves designed for flow regulation, such as V-port ball valves and segmented ball valves. They provide better control over the flow rate without damaging the valve or the system.
Let's break it down so you can choose the right tool for the job.
Why are standard ball valves not very suitable for regulating airflow?
A standard ball valve has a round opening in the ball. When it is partially open, this round opening creates uneven flow paths and a sharp pressure drop. The result:
· Poor flow rate control
· Cavitation (collapse of bubbles in the flow).
· Excessive wear on seats and seals.
· Vibration or noise in the line
If you only need to slightly reduce flow for a temporary solution, a standard ball valve will suffice. But if precise flow control is important, it's not the best choice.
Are Ball Valves Suitable for Airflow Regulation?
Not really, unless you're using the right type. This is where specialized designs like V-port ball valves come in handy.
A ball or seat port has a V-shaped cutout that allows flow to start gradually and increase as the valve opens. Instead of sharp jumps from low to high flow, the V-port provides a predictable curve.
This makes V-port ball valves better suited for flow control. They are often used in:
· Process control systems
· Chemical dosing lines
· Application of heating, ventilation, and air conditioning systems
air (HVAC).
· water treatment facilities
What is a V-port ball valve?
A V-port ball valve (sometimes called a V-ball valve) is a modified version of a standard ball valve. Instead of a round opening in the ball, it has a V-shaped cutout, which creates a more linear flow path as the valve opens.
This means you will get:
· Smoother flow control
· Reduced turbulence
· Improved pressure management
· Reduced wear of internal valve parts
V-port ball valves are capable of handling more precise control tasks while maintaining the strength and sealing of a standard ball valve.
Segmented ball valves: another option for flow regulation.
A segmented ball valve works in a similar way. However, it is often used in high-flow systems. In this design, the ball has a cut-out segment that allows for more precise flow regulation.
These valves are robust, reliable, and well-suited for systems containing slurry, pulp, or a high amount of fiber.
Similar to V-port ball valves, segmented ball valves are considered a type of control valve. However, they can also completely shut off flow when necessary.
Ball Valve vs. Globe Valve for Flow Control
If you are comparing a ball valve to a globe valve for flow control, globe valves are best. They are designed for flow regulation.
The shape of the seat and plug allows for precise control of airflow in any position. Here's how they compare:
Feature
Ball Valve
Globe Valve
Best Application
On/Off (standard); Throttling (V-port/segment)
Precise Flow Control
Speed Control
Poor (standard), Good (V-port)
Excellent
Pressure Drop
Low (Fully Open)
Moderate
Wear with Partially Open
High (Standard Construction)
Low
Maintenance
Simple
More Complex
If you only need occasional flow regulation, a V-port ball valve can be a great balance between controllability and simplicity. But if flow regulation is a daily part of your system, then a ball valve may still be the best option.
How to Use a Ball Valve for Flow Regulation (If Necessary)
Sometimes you have an imperfect configuration, and you need a standard valve to do the job. If you're going to use a regular ball valve to control flow:
· To avoid cavitation, maintain an open range
temperatures from 20% to 80%.
· Watch for vibration or noise – this is a sign
of damage.
· Do not leave it partially open for extended periods.
· If possible, consider switching to
a V-port design.
Choosing a flow control ball valve
When both shut-off and flow control are required, a flow control ball valve, such as a V-port or segment ball valve, offers a reliable compromise. You get durability, ease of operation, and smoother flow control than a standard valve can provide.
Industries that often use them include:
· Food and beverage processing
· Chemical dosing systems
· Power plants
· Water treatment facilities
In conclusion: Can a ball valve be used to regulate airflow?
So, can a ball valve be used to regulate flow? Yes, but only if the appropriate type is used.
If in doubt, compare ball and globe valves based on your system's needs. Ball valves are known for their simplicity and durability. Globe valves offer control. V-port ball designs offer both – if flow control and flow shut-off are equally important.
STARRY manufactures precision V-port and segmented ball valves designed for flow regulation and control. We test each valve for flow rate, pressure rating, and tightness.
Our valves also meet quality standards such as EN12266 and DIN.
Contact us today for a quote or more information.

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