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How is the characteristic determined in a globe valve?

There are several ways of altering the characteristic in a globe valve depending on the particular design.

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There are several ways of altering the characteristic in a globe valve depending on the particular design.
The most common is to use the profile on the front of the plug head. In this case, the seat ring and retainer are not changed. If the plug is cage guided the characteristic of the control valve is usually determined by the retainer or disk stack with the plug having a flat face. As the plug moves up, it uncovers more flow paths.
A series of small holes at the bottom of the retainer with larger holes at the top will give a bi-linear characteristic, which can be designed to give results similar to equal percent.

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Will Don

After earning my bachelor's degree in mechanical engineering from Zhejiang Normal University in 2008, l was fortunate enough to begin my career with Siemens, Fisher, and YTC, focusing on control valve accessories. Over the past dozen years, l've poured my heart and energy into understanding technology and fluid solutions for control valves.
Now, as the marketing director for THINKTANK, a trusted branch of the Taiwan STONE valve group, I can't help butf eel proud of how far we've come. Our knowledge isn't just reaching professionals like engineer and valve distributors; it's also inspiring the next generation of automation college students.
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I am the author of this article, and also the CEO and marketing director of THINKTANK, with 15 years of experience in the industrial valve industry. If you have any questions, you can contact me at any time.

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