Get a copy of ASME B16.34, Valves Flanged, Threaded...
Table 1 shows allowable bar materials as A675 Grade 70, A105 (forged), A350 LF2, and A696 Grade C.
CRG, the motivation for using SO flange with LR BW Ell is our customer has it shown that way on their facility drawing. There is not enough room for the Ell and a WN. We were suppossed to supply this item, now the customer's A&E firm states they will supply this item.
Note, we perfer to use...
Is it acceptable industry practice to weld slip on flanges to a long radius butt weld elbow? I am specifically talking about 8" and 16" 150# B16.5 A105 flanges. We typically use weld necks with butt weld elbows.
Does Anyone know of a company in the Delaware Valley (or North Eastern USA) that has a hydrotest machine that can handle a 24" Nominal size, 150# (check) valve with butt weld ends that is approximately 54" long?
