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Difference Between PN and ANSI Rating
- Thread starter eanlex71
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![[thumbsup2]](/data/assets/smilies/thumbsup2.gif "[thumbsup2] [thumbsup2]")
VenPipingEng
Mechanical
As Biggy said: ANSI is an "imperial" Standard while "PNxx" is "metric" ... if you're trying to match an ANSI flange with a PN flange, you won't.
The common thing to do is asking the vendor (when you face a piece of machinery with "PN" flanges) to supply also the counter-flanges (as and additional ... yes, but this is less expensive that asking them to use an ANSI flange providing PN flanges is their standard)
The common thing to do is asking the vendor (when you face a piece of machinery with "PN" flanges) to supply also the counter-flanges (as and additional ... yes, but this is less expensive that asking them to use an ANSI flange providing PN flanges is their standard)
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