Optional Type Flange Design - Inside Diameter (B)

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#76500 - 06/07/22 09:48 PM Optional Type Flange Design - Inside Diameter (B)
Chandan Member Registered: 06/07/22 Posts: 1 Loc: Pune, Maharastra	Hi Folks ASME VIII Div 1 permits flanges classed as optional to be designed as an integral flange or as a loose type flange if certain conditions are met. I am currently reviewing the design of an optional flange (Type Fig 2-4(8)) and I am not sure what value to use for the inside diameter (B). If I treat this flange as an loose flange then B should equal the ID of the flange. However, if I treat the flange as integral, should I be using the inside diameter of the pipe (as the ID of the integral flange unit) Can you help with justification why should it ( Pv Elite) is taking pipe ID as inside diameter of integral flange? Looking forward to hearing from you soon. Thanks and Best Regards, Chandan Singh Manager Projects HRS Process Systems Limited Mobile:- 9172255532
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#76506 - 06/13/22 11:16 AM Re: Optional Type Flange Design - Inside Diameter (B) [Re: Chandan]
mariog Member Registered: 09/29/07 Posts: 798 Loc: Romania	A loose flange (lap joint flange) is a two pieces device; the flange itself is not welded or fixed in any way. Flange type Fig 2-4 (8) is an welded assembly of two pieces and you expect that welding is able to assure they work together. For me, at least, is enough to clarify such question.
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