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Pressure vessel nozzles 2

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flaus77

flaus77

Structural
Jul 31, 2008
15
Can anyone please tell me what the RFBF stands for when specifying a 3000 # RFBF nozzle?
 
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One guess is "Raised Face Blind Flange"

Regards,

Mike
 
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The 3000# flanges refer API 6A) may have machined back face, called back facing, as alternative to spot facing of the bolt hole. I suspect that the back facing is specified in this case. However, I cannot exclude explanation provided by SnTMan.
Cheers,
gr2vessels
 
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