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boeckenj
PostPosted: Wed Mar 30, 2011 8:33 pm 
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Joined: Wed Mar 30, 2011 7:22 pm
Posts: 1
It's never been apparently clear to me when a "U" or "UM" stamp is required.
Can someone please provide an answer on this.

We have a vessel with the following specs:

- Location Clayton, North Carolina
- Media: Water
- 8.625" diameter vessel
- Volume:12 Liters
- Design Pressure: 150/FV Psig
- Design Temperature: 204° F
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leem817
PostPosted: Thu Mar 31, 2011 10:32 am 
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Joined: Tue May 19, 2009 6:31 pm
Posts: 207
Location: Chicago, Illinois USA
It's never been apparently clear to me when a "U" or "UM" stamp is required.
Can someone please provide an answer on this.

We have a vessel with the following specs:

- Location Clayton, North Carolina
- Media: Water
- 8.625" diameter vessel
- Volume:12 Liters
- Design Pressure: 150/FV Psig
- Design Temperature: 204° F

Based on what you describe, this vessel is exempt from stamping. See U-1(f)

lee
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