Large Flanges
Large Flanges
(OP)
We purchased several 30" flanges for ASME application. The flanges came in stamped ANSI B16.47 Class "E". They are ffso flanges. Are these acceptable to use per Code?
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RE: Large Flanges
RE: Large Flanges
When you say ASME application, if your talking about for ASME Pressure Vessels, I can't answer that. They would be acceptable in ASME B31.3 Piping when used within their allowable pressure ratings. Hopefully your service is water.
The link below to Texas Flange may have some answers for you. They have a nice on-line catalog.
http://www.texasflange.com/catalog.html
NozzleTwister
Houston, Texas
RE: Large Flanges
RE: Large Flanges
RE: Large Flanges
UUUUmmmmmmm....
Could the "E" really be a "B" if it is the last letter of the Stamp ? Is this a stamping error by the manufacturer ?
Check the dimensions of the flange in question and see if they match those of of a B16.47 Series "B" flange
Could this thread be a waste of time ???????
My opinion only
RE: Large Flanges
RE: Large Flanges
1.3.2.3 Class E flanges are suitable for pressure ratings up to and including 275 psi (1,896 Wa). Dimensions of Table 4 flanges are identical to ANSI/ASME B16.5 class 150 flanges up to 24 in. (600 mm) (without raised face), and ANSI/ASME B16.1 class 125 large diameter flanges above 24 in. (600 mm) (without raised face), except they shall be faced in accordance with Sec. 4.2.2 of this standard.
RE: Large Flanges
WELDING NECK FLANGES ABOVE 26" ARE PER API 605
WELDING NECK FLANGES BELLOW 24" ARE PER ANSI B16.5
LUIS MARQUES