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nbhide108
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Join Date: Apr 2009
Posts: 67

SMS Union - Full Vacuum?

06/09/2010 11:30 PM

Can SMS Union use under full vacuum condition instead of flange for a pressure vessel?
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Tornado
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Technical Fields - Technical Writing - New Member Engineering Fields - Piping Design Engineering - New Member

Join Date: May 2009
Location: Richland, WA, USA
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#1

Re: SMS UNION

06/10/2010 1:16 AM

Unfamiliar Acronym Alert: SMS--what's that?

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Anonymous Poster
#2
In reply to #1

Re: SMS UNION

06/10/2010 1:56 AM

It is swedish standard union.

I doubt its code permissive in pressure vessels.
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Tornado
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#3
In reply to #2

Re: SMS UNION

06/10/2010 2:33 AM

Any reason why or why not? (I am not familiar with this type of union, so I simply don't know. The pressure vessel codes might not address this; it seems to belong to the realm of piping codes instead.)

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freecitizen
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Join Date: Jul 2010
Posts: 2
#5
In reply to #1

Re: SMS UNION

07/28/2010 4:15 AM

SMS Union is a type of sanitary fitting popular in Europe.
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freecitizen
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Join Date: Jul 2010
Posts: 2
#4

Re: SMS Union - Full Vacuum?

07/28/2010 4:13 AM

Probably not; SMS Union are very thin walled. But I could be wrong, what is important is determining the maximum allowable external working pressure for the fitting thickness and see if it satisfy FV condition. If there is a corrosion or other mechanical allowance specified, SMS Union probably won't work.
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