Re: What is Parallel?

I would normally expect out of parallel to be A. That is by far the most common problem.

George McKinney

• Original Message -----
  From: gasket_guru
  To: <a href="/group/PipingDesign/post?postID=zpYUmwG1zvrAtM0bIy8gd8r4ntygpnZxgxu3skndggvk42ZlbmuRyBw3UXnN_oQ-Z1EEPzoybyrUTVYbzqEZh7rl">PipingDesign@yahoogroups.com</a>
  Sent: Friday, January 23, 2004 9:15 AM
  Subject: [PipingDesign] What is Parallel?
  

When preparing to bolt up a gasket between two flanges, if a
pipefitter were to say the flanges were "out of parallel", what
exactly would he mean by this?

Would he mean:

1. Each flange face is flat, but relative to the mating flange, the
   sealing surfaces are not pareallel to EACH OTHER, or
   
2. The sealing surface of each flange itself is not flat, but "wavy"
   or "warped", or
   
3. Something comletely different.

Finally...are there any ASME spec's regarding allowances or
tolerances for A. or B.

Regards,

Davis

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[Non-text portions of this message have been removed] Received on Fri Jan 23 10:42:00 2004