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Mechanical_Engineer
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Join Date: Apr 2014
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Can We Use Pipe Caps as Heads for ASME Pressure Vessel?

04/27/2014 10:31 AM

I am designing an ASME code stamped pressure vessel which is made of a 10" pipe. I was wondering if I can also use pipe caps for the heads?

Does ASME VIII Division 1 allow using pipe caps as heads for this ASME code stamped pressure vessel which is small in I.D.?? If yes what is the basis or reference.

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phoenix911
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#1

Re: Can we use pipe caps as heads for ASME pressure vessel?

04/27/2014 11:36 AM

We used in for heat exchangers, it just has to conform to ASME requirements to ensure weld penetration, with. Usual, or the use of a backer.

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Tornado
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Re: Can we use pipe caps as heads for ASME pressure vessel?

04/27/2014 11:37 AM

In a vessel shop where I once worked, we used SA234WPB pipe caps for UM (small) vessels such as this. I no longer have a Code copy, so can't cite chapter and verse.

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MJCronin
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Re: Can we use pipe caps as heads for ASME pressure vessel?

04/27/2014 2:30 PM

Yes, this is permitted..

I believe ASME VIII, Div 1; UG-44 which references ASME B16.9 for Wrought Steel fittings gives more information

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Tornado
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#4

Re: Can we use pipe caps as heads for ASME pressure vessel?

04/27/2014 2:50 PM

Note also that they are 2:1 semielliptical, for thickness calculations.

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dolby
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Re: Can we use Pipe Caps as Heads for ASME Pressure Vessel?

04/28/2014 12:32 AM

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