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SPOOL LENGTH
- chethanck
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11 years 4 months ago - 11 years 4 months ago #8253 by chethanck
SPOOL LENGTH was created by chethanck
Is it necessary that minimum 1D spool required between an elbow and a fitting...
does any code say so..?
does any code say so..?
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- Jop
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11 years 4 months ago - 11 years 4 months ago #6711 by Jop
Do it once and Do it Right
Replied by Jop on topic Re: SPOOL LENGTH
The ASME B31.1 and 31.3 do not address this issue.
Please use "search" and look up "Pup"
And no it does not need to be 1D
Three times wall thickness is adequate.
Please use "search" and look up "Pup"
And no it does not need to be 1D
Three times wall thickness is adequate.
Do it once and Do it Right
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- 11echo
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11 years 4 months ago - 11 years 4 months ago #6713 by 11echo
Replied by 11echo on topic Re: SPOOL LENGTH
The spool can be ANY length, only when your about 3" or shorter does and issue come up with overlapping heat effected zone during welding. Try reading these forum posts:
viewtopic.php?f=1&t=3023
viewtopic.php?f=1&t=2418
viewtopic.php?f=1&t=3023
viewtopic.php?f=1&t=2418
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- Anton
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11 years 4 months ago - 11 years 4 months ago #6714 by Anton
- If you're the smartest person in the room ... you're in the wrong room.
Replied by Anton on topic Re: SPOOL LENGTH
To be clear ......
There does not have to be a spool between fittings.
They can of course be placed fitting to fitting.
Only when a spool is actually needed does the minimum distance question arise.
There does not have to be a spool between fittings.
They can of course be placed fitting to fitting.
Only when a spool is actually needed does the minimum distance question arise.
- If you're the smartest person in the room ... you're in the wrong room.
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- rlpooniya
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11 years 4 months ago - 11 years 4 months ago #6717 by rlpooniya
Replied by rlpooniya on topic Re: SPOOL LENGTH
I haven't seen such thing in codes. In some sizes we need pup piece between Tee & High rating Flange (flange for valve installation) for bolt removal/replace. (If I weld 2"~10" size Tee with 600# Flange, Bolt can't removed, So we need to add pup piece between Flange & Tee).
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