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Drain and Flare line ( Do not Pocket )

Drain and Flare line ( Do not Pocket )

(OP)
Hello

I don't understand about " Do not Pocket " for piping design.
When I see " Do not Pocket " on drain line ( closed drain ) or Flare line.
How to design those lines ... what piping layout should I avoid ??

Thank you

RE: Drain and Flare line ( Do not Pocket )

Do not have low points ("pockets) or places where liquid can gather and fill up the pipe on a static basis, i.e. continuous slope in whichever direction is shown. See fig 1 in below.

http://www.chemicalprocessing.com/articles/2012/pi...

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RE: Drain and Flare line ( Do not Pocket )

If your piping is to be routed in a pipe rack, a good place to locate it would be on a cantilever on the outside of the rack to allow the continuous slope.

RE: Drain and Flare line ( Do not Pocket )

Thanks, LittleInch...

Dik

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