B16.5 raised face flanges question
B16.5 raised face flanges question
(OP)
Hi,
I'm trying to determine the OD of the raised face portion on a B16.5 flange (class 150 and 300).
If you're reading B16.5-2009, would this be the dimension "Diameter of Hub, X" in column 4 of Table II-8 (pg. 162) of this standard?
It looks an awful lot like the Diameter of Hub is the same as the diameter of the raised face for threaded, slip-on welding, socket welding, blind and welding neck flanges. But I've learned not just go off what it looks like the drawing is trying to say.
Can someone please verify this? Any help is appreciated.
I'm trying to determine the OD of the raised face portion on a B16.5 flange (class 150 and 300).
If you're reading B16.5-2009, would this be the dimension "Diameter of Hub, X" in column 4 of Table II-8 (pg. 162) of this standard?
It looks an awful lot like the Diameter of Hub is the same as the diameter of the raised face for threaded, slip-on welding, socket welding, blind and welding neck flanges. But I've learned not just go off what it looks like the drawing is trying to say.
Can someone please verify this? Any help is appreciated.





RE: B16.5 raised face flanges question
RE: B16.5 raised face flanges question
There is no appendix F in this new version.
RE: B16.5 raised face flanges question
They're now Figure II-7 and Table II-4. pages 155 and 107.
RE: B16.5 raised face flanges question
Raised Face dia. is not addressed in B16.5
This Standard permits flat face flanges in all classes (6.3.1), and a raised face may be removed from a raised face flange to convert it to a flat face flange (6.3.2).
Raised Face dia. is mostly made according to "Diameter of Lap, G" of B16.9 Table 9 / I-9: Dimensions of Lap Joint Stub Ends.