Flanged Joints - Joining Weld Neck and Slip on Flanges
Flanged Joints - Joining Weld Neck and Slip on Flanges
(OP)
Are there any design issues that need to be considered when you have a joint containing flanges of different types? For example, say you have a flanged joint where one side is a raised face weld neck flange and the other side is a raised face slip on flange. Assuming the slip on flange is appropriate for the application, and the flanges are of the same pipe size and class, are there any joint integrity issues?
I would assume you need to pick a gasket that is suitable to be used with the slip on flange, but assuming you do that, is there anything to be concerned about regarding joint integrity?
Thanks.
I would assume you need to pick a gasket that is suitable to be used with the slip on flange, but assuming you do that, is there anything to be concerned about regarding joint integrity?
Thanks.





RE: Flanged Joints - Joining Weld Neck and Slip on Flanges
But the first question is why on earth you would wanrt to do this in the first place unless you are mating with an existing flange.
RE: Flanged Joints - Joining Weld Neck and Slip on Flanges
I have seen [& rejected] many, many undersize S-O flange welds. Unless engineered [with calc's] otherwise, it requires a fillet weld 1.4 times the pipe wall thickness 'T'. This gives a through-thickness in the fillet of 'T' [the wall thickness of the pipe].
RE: Flanged Joints - Joining Weld Neck and Slip on Flanges