Globe Valves: Mastering Precision in Flow Regulation

Flow challenges in the valve system can impact the entire output of any industrial production. Whether it is about production, cooling, regulation, or any other application, some of them require precise regulation of flow for optimal results. Unless the correct type of valve is selected, such results are impossible to get. The oil and gas industry has the highest reliance on globe valves, which is why it is the largest consumer of these valves. Globe valves feature a specialized mechanical structure and high strength, providing a controlled supply of gas and liquid. What else do they offer? Here is all you can find about them in this blog.

Why Use a Globe Valve Instead of a Ball Valve?

The reason is flow regulation. You can’t regulate the flow through a ball valve because of its quick shut-off system. The mechanism of the globe valve differs from that of other types of valves, making it suitable for regulating flow in liquid and gas systems. To gain a better understanding of how a globe valve works, consider its key advantages.

Popular Choice for Its High Throttling 

It is one of the best choices for throttling where you can’t fear the turbulence. The globe valve precision provides high throttling, whether the pressure is normal or high. This function is its greatest advantage, which sets it apart from the competition. Industries such as water supply, waste management, medical, and chemical processing prefer to install globe valves for precise throttling. They provide excellent support for boilers, chillers, and cooling water systems.

Endurance Against High Temperature and Pressure

Their endurance level is exceptionally high, making them well-suited for regulating flow amid extreme pressure and temperature. Metals like steel, cast iron, and alloys provide intense support to valves, enabling them to withstand heavy flow impacts. This endurance, along with flow regulation, makes globe valves a perfect solution for extreme conditions where throttling is required.

Tight Sealing Against Leakage 

The third advantage, which seals the success of globe valves, is their tight sealing. There is no risk of leakage, whether the pressure is medium or high, when you go for globe valves. Their tight sealing ensures a high flow rate for optimal valve system performance. When there is a tight seal, there is no risk of fluid or gas wastage. The output will be as high as expected. Tight sealing makes the globe valve the right choice for consistent results.  

Supports Full Isolation in Maintenance Works

When isolation is required for maintenance, the flow must be shut off completely. This is where globe valves prove to be really efficient. This feature prevents any risk of mixing the fluid because the isolation quality is really high. Maintenance is conducted as a routine procedure without risk of breakout, leakage, or contamination inside the valves. Hence, globe valves are the right choice for this specific function, which is mandatory in maintenance.

What are the Disadvantages of a Globe Valve? 

Does a globe valve reduce pressure? Yes, it does. There are a few disadvantages because nothing is free of flaws in this world. When we examine the overall performance of globe valves, they reveal some vulnerabilities, such as high pressure drop. It is a disadvantage that affects the output of the flow system. Industries must accept it and adapt to its advantages. However, more energy is required to push the flow of gas and liquid because of the pressure drop in the globe valves. Since flow regulation is easy in it, it is not a good choice for slurries. It is also a slight disadvantage because you can install a globe valve for slurries.

How Do You Maintain a Globe Valve?

You need to perform regular maintenance work to keep the globe valves in optimal condition. They will continue to perform well as long as you maintain them. What you need to do is keep them lubricated for smooth movement. Conduct a physical inspection and certified tests to assess their strength. Pressure tests are one of them, and there are multiple ways to analyze the leaks. Replace the damaged or worn parts, such as seals and seats, to keep them in good condition. Inspect the packing if it is in good condition. Replace the one that has signs of wear and tear.

Do Globe Valves Have Flow Direction?

Yes, there is an inlet and an outlet in the globe valve, which indicates that it has unidirectional flow. Based on its flow direction, you will have to install it accordingly. That will decide the performance of the globe valve. You may find an arrow on its cast that shows the direction of flow. Therefore, ensure you know the orientation of the arrow on the valve to install it correctly. Additionally, there are other ways to select the installation process with precision.

Can We Use Gate Valves for Throttling Instead of Globe Valves?

No, a gate valve is not built for throttling. There will be lots of problems for you if you choose it for this specific function. This valve will experience high turbulence if you attempt to throttle it. However, selecting a globe valve will give you precise throttling results. Whether it is for flow regulation or for any other reason, a globe valve is the right choice for throttling. Therefore, during the valve selection process, you must be cautious.  

Conclusion

The selection of a globe valve is primarily based on its functions, with the highest advantage being its ability to throttle. It enables throttling for various applications across multiple industries. Neither will there be any risk of turbulence, nor will there be any collapse of the valve. Therefore, you need to select a globe valve if you are specifically looking for a throttling function in water supply, waste management or any chemical mixing in the medical or chemical industry. Its structure and mechanism provide precise results, including flow regulation, leak-proof flow, and high endurance against extreme pressure and temperature.