Is a control valve flange grade of PN16 suitable for butylene?
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Is a control valve for butylene with a flange rating of PN16 acceptable? It was supposed to be PN25, but there was a mistake in the specification; however, the control valve has already arrived. Is it still possible to make the change?
This depends on the temperature and pressure of your medium, as well as the design temperature and design pressure of the pipeline.
If the working pressure exceeds 1.6 MPa under normal conditions, it definitely won’t be usable
I checked the temperature and pressure gauge for the flange; PN16 is fine. Isn’t the minimum requirement for flanges used with liquefied hydrocarbons PN25?
According to HG/T 20592-2009: PN10-40, the flange connection dimensions for DN80 are the same. So, personally, I think: it’s not a big problem. You can consult the valve manufacturers.
Check what the actual pressure in your pipeline is. If it’s already around 16 kilograms, it’s better not to use this valve, as it can lead to problems
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