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Welding design and closure thickness in a "fully welded three pieces ball valve"

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ANTONITO

Mechanical
Apr 21, 2015
6
Hi,

I have some doubts in a fully welded three pieces ball valve.

1- I have simulated with FEM the welding I need for my valve (I'm talking about the welding between the closure and the body). But I would like to know if there is any Standard which defines the minimun welding thickness. I would also like to know if the welding has to be total penetration or if it is possible to be partial penetratioan as in the picture.


2- How can I calculate the thickness I need in the closure wall (the wall thickness between the closure and the body, see picture)

Thank you.
 
 http://files.engineering.com/getfile.aspx?folder=0a2ec5f5-977b-4702-b303-926ed404909c&file=Eng-tips.png
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