ASME B16.5_ 2013 says:
2.8: Straight Hub Welding Flanges (LWN)
2.8.3 BORE. The bore diameter shall be equal to B (Inside Diameter) of the welding neck flange. Other bores may be furnished by agreement between the end user and manufacturer. In no case shall the bore diameter exceed the bore of...
Does it have any sense? If I weld a 14" LWN to a pressure vessel as a connection, I understand that this LWN should be connected with a 14" WN and the WN should be welded with a 14" PIPE.
In this case just in the union of the LWN & Flange there should be a mismatch due to the different IDs
I can...
Thank you Afox88
The last question. Which WN do you select to match a 14" LWN?
I think, the best one for LWN 8" (ID: 8") would be: WN 8" WT:0.312" (equal ID of the LWN)
But with a 14" LWN?¿ a WN with WT: 0?¿¿?
Thank you for your support,
Afox88, I have seen LWN with equal inside diameter of SCH80 Pipe ID:
http://www.friulanaflange.it/eng/pdf/B16.5/B16.5-LWN.pdf
I would like to know why sometimes PIPE STD ID is used and why in other cases the OD of NPS is uses as bore diameter.
As far as I know, LWN are also used in pressure...
In LWN (Long Weldig Neck) NPS higher than 12" most of the datasheets propose the inside diameter as the outside diameter of the Pipes acc. ASME 36.1
Which is the reason? Is it to be used as Slip ON Flanges?? If so, why is not allow or recommended directly a SO Flange?
I will appreciate your...
