Newbie seeking help! !
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Is there anyone who knows something about this? The valve material list provided by the design institute shows that the model of the butterfly valve is D341X-16, with a pressure rating of PN20. Is this incorrect? As shown in the figure below
The valve model was entered incorrectly; it’s likely that the designer copied it without making any changes.
How should this be expressed correctly? The pressure rating at the back is LB150, which is according to American standards; should the valve’s model be specified as D41X-20?
The problem is that one uses the LB150 American standard, with the valve model being D41X-16; the pressure specification follows the Chinese standard. By using these two standards together, it causes issues. Should it be changed to D41X–20 instead?
Please design and confirm. Otherwise, the valve and the flange do not match.
How should this be expressed correctly? The pressure rating at the back is LB150, which is according to American standards; should the valve’s model be specified as D41X-20?
For the US standard of 150 lb, it should correspond to grades 16 or 20. Carbon steel grades below 16 kilograms should be indicated as 16C in the valve model designation
If it’s US standard, then it should be the full US standard; if it’s national standard, then it should be the national standard. Mixing these standards together is most likely to lead to problems, and the design institute needs to clarify this