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rakeshmech84
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Join Date: Oct 2010
Posts: 3

RTJ Flange With Jack Screw Hole

11/12/2010 1:06 AM

WHAT IS THE PURPOSE OF JACKS CREW HOLES IN RTJ FLANGES .
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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
Posts: 21017
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#1

Re: RTJ FLANGE WITH JACK SCREW HOLE

11/12/2010 1:27 AM

To spread the flanges apart for easier insertion/removal of the gasket.

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Anonymous Poster
#2
In reply to #1

Re: RTJ FLANGE WITH JACK SCREW HOLE

11/12/2010 4:35 AM

thanks,

do the two rtj flange jack screw holes need to be in plumb while welding
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PennPiper
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Engineering Fields - Piping Design Engineering - Retired Piper

Join Date: Feb 2007
Location: Bayonet Point, Florida
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#3
In reply to #2

Re: RTJ FLANGE WITH JACK SCREW HOLE

11/12/2010 7:17 AM

The jack screws need to be 180 degrees apart.

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yesyen
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Location: India-Chennai.
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#4
In reply to #2

Re: RTJ FLANGE WITH JACK SCREW HOLE

11/13/2010 8:43 AM

Need not be. As a mater of convenience, if they are horizontal, the removal and re-fixing would be more easier.

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