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Do ASME B16.47 flange pressure/temperature ratings still mirror those for B16.5?
- Thread starter timsch
- Start date
LittleInch
Petroleum
Not unsurprisingly the answer is Yes, they are the same. both are the 2017 editions.
I didn't check every material group, but would be very surprised if there was any difference.
Do you not have access to both??
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
I didn't check every material group, but would be very surprised if there was any difference.
Do you not have access to both??
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
- Thread starter
- #3
I don't. In all the years I've worked at my current job, we've never done anything requiring a flange over 8", so B16.5 is all that we have, regarding ASME flanges. This question pertains to an odd situation where we are building a small R&D testing facility at our manufacturing location and we are making a small reactor simulator, which will be a vertical 36" pressure vessel that is flanged on top. It is a one-off situation.
LittleInch
Petroleum
timsch,
Ok I can get that, but be aware that 16.47 has two types of flanges, series A and series B. Quite different.
More than one person has been caught out by that....
dimensions you should be able to google.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
Ok I can get that, but be aware that 16.47 has two types of flanges, series A and series B. Quite different.
More than one person has been caught out by that....
dimensions you should be able to google.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
- Thread starter
- #5
The dimensional series, A and B, have the same pressure-temperature ratings. But unless they use special bolts they will not fit up together.
Because the year of Edition of the standards B16.5 and B16.47 it is "possible" that the pressure ratings for the same material and class could be different between the two standards. This can happen when the ratings are tweaked slightly (typically this has been by 5 psi or so).
This has actually been the case a few times over the past 20 years that I'm aware of. Because Table U-3 (VIII-1) lists the "Year of Acceptable Edition" of the standards it has come about that there have been different pressure ratings for the two size ranges of flanges on the same vessel.
Because the year of Edition of the standards B16.5 and B16.47 it is "possible" that the pressure ratings for the same material and class could be different between the two standards. This can happen when the ratings are tweaked slightly (typically this has been by 5 psi or so).
This has actually been the case a few times over the past 20 years that I'm aware of. Because Table U-3 (VIII-1) lists the "Year of Acceptable Edition" of the standards it has come about that there have been different pressure ratings for the two size ranges of flanges on the same vessel.
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