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TOPIC: Flange series (A or B)

10 years 4 months ago #7542

  • Sachin
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There are two Series for Flanges as per B16.5(Series A & B).
Could you please tell me which one to use or conditions when a particular series is to be used.
For DN600 we have to use series A
Thanks

Re: Flange series (A or B) 10 years 4 months ago #5033

  • Sachin
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Sorryy,
The std is ASME B16.47
Series A & B are applicable for size greater than DN600.

Thanks

Re: Flange series (A or B) 10 years 4 months ago #5034

  • Jop
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Please read this link I found on "Google"

http://www.boltex.com/dimensions.htm (Please note: This link no longer works, sorry)
Do it once and Do it Right

Re: Flange series (A or B) 10 years 1 month ago #5233

  • ramamoorthy
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can you explain , where to use A & B type flanges

Re: Flange series (A or B) 10 years 1 month ago #5234

  • Peter Pyper
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Ramoorthy
If you follow Jop's link it provides explanation about Asme B16.47 and where to use Class A or B flanges and API 605 and MSS SP44 and the differences between.
Just one note to remember when using Class B/API 605 flanges - check your valve for compatability to see if the bolt pattern matches. Usually the valve is manufactured to MSS SP44/Class A.
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