Hub of loose type flange
Hub of loose type flange
(OP)
Hi,
Thanks in advance.
Mandatory Appendix 2
Is anybody can tell me how to determine Hub Length (h), Hub thickness (go & g1)in Fig.2-4 (1) or (3a)?
Thanks again
Wei55
Thanks in advance.
Mandatory Appendix 2
Is anybody can tell me how to determine Hub Length (h), Hub thickness (go & g1)in Fig.2-4 (1) or (3a)?
Thanks again
Wei55





RE: Hub of loose type flange
However as a practical matter, the use of a hub for a loose type flange usually makes the overall flange (thru the hub) thicker than a flange with no hub and larger diameter as well. If you are fabricating the flange a simple ring such as in Fig (3a) is probably the most economical way to go.
Regards,
Mike
RE: Hub of loose type flange
Thank you very much for your quick response. I am sorry I failed to make my question more clear. I am calculating a simple ring flange with neck fillet welded in both sides exactly as Fig.(3a). In this case, go=g1=0, h=0, so ho=0. But how about F/ho or h/ho ? As for g1/go, maybe I can say g1=go, so g1/g0=1, but I am not sure.
Thanks
Wei55
RE: Hub of loose type flange
If you do not consider the welds as a hub, factors Vl and Fl are of no interest, see 2-7(b).
If considering the welds as a hub, see the Fig 2-4 (7) for dimensions g0, g1, h and see also general note (c) of Fig 2-4 (Optional Flanges) and 2-7(a). Also see 2-3 Notation.
This should get you there:)
Regards,
Mike
RE: Hub of loose type flange
Thank you very much. It is very helpful. I got it.
Best Regards.
Wei55