I have a question regarding flanges and bolts
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At the same pressure rating, do pipe flanges and valve flanges have the same number of bolt holes? Is the hole size the same too?
I’m guiding those with different pressure levels; the screw positions are incorrect
If the same standards are used, there should be no problems. The key is to confirm the specific details. For American standard flanges, the pressure ratings must be consistent; for German standard flanges, the PN value must be the same.
The key is to see if the same standards are used; if the standards are the same, then the results should be the same as well.
If it is a US standard, one can refer to ANSI B16.5, which specifies the number and diameter of bolt holes
With the same nominal size, the same pressure rating, and the same standard, they are naturally identical; otherwise, they cannot be installed.