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Recent content by Seaya

Terminology / N-Type Code Symbol Stamps

Does anyone know of a good website that helps explain the "N", "NA", "NPT", "NS", "NV", and "N3" stamps in regards to when one is used over the next and to refernece further definition under the respective symbology? Examples would be a great refernece but all I have been able to readily find...
- Seaya
- Thread
- Jul 19, 2010
- Replies: 1
- Forum: Nuclear engineering
Pressure Testing

Correct, all openings to the duct will be sealed except for my supply connection to feed or extract air pressure.
- Seaya
- Post #4
- Jul 15, 2010
- Forum: Mechanical engineering general discussion
Pressure Testing

I have to over pressure and leak test a duct. I am enclosing each end of the duct to pressure test to an internal presuure of 4" WC (0.14 PSI) gauge. Here lies my question, will I have to pull a partial vacuum or apply positve air pressure to the enclosured space? It appears that I would have...
- Seaya
- Thread
- Jul 15, 2010
- Replies: 5
- Forum: Mechanical engineering general discussion

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