Thanks!!. However In my opinion mean diameter of hemispherical head shoud match with mean dia of skirt support if there is a sufficient clear gap between butt weld joint of shell to head and skirt support to head.Correct me if I am wrong.
Your reply that "there is no standard applicable" is valid also for selection of forged Y-ring?? OR Y-ring should be selected in certain cases like creep temp. range etc.
And if one decide to go for Y-ring then how to decide the dimensions of this Y-ring??
Is there any standard of any PMC available?? OR is there any standard procedure to dimention Y-ring??
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