Re: Flange Bolt Hole Straddling Centerlines

From: <Christopher>
Date: Sat Jun 23 2001 - 10:44:00 EDT

>The dowels are called among other things FLUPS or Flange Line Up Pins.
>It does sound like the best answer, and it provides a standard that way
>spools can be built away from where they are to be installed and
>provided the other guy leveled the holes every thing lines right up.
>At least that's how I see it.

I have this odd feeling that I'm missing something. Why install dowels instead of lining up using the bolt holes that are already there? Seems like you could put a couple of bolts in the two top holes of the fixed flange and line up on them. If the 1/16 clearance is too sloppy find something like pipe or round bar and turn it to a slip fit and use that instead of the dowels. The object of the whole exercise is to get the bolt holes to match, anyway. Is there something else that the dowels are needed for?

Christopher Wright P.E. |"They couldn't hit an elephant from <a href="/group/PipingDesign/post?postID=tyhztstT9JHbPMxx6B51Hs_L1kW-85REjPqtnu6Wcx42UuoBwbqdNGdZpk_iNns4fynxIGi2rxCQig">chrisw@skypoint.com</a> | this distance" (last words of Gen.

___________________________| John Sedgwick, Spotsylvania 1864)

<a href="http://www.skypoint.com/~chrisw">http://www.skypoint.com/~chrisw</a> Received on Sat Jun 23 10:44:00 2001