Drain and Flare line ( Do not Pocket ) 2

[B77_imported]

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

 

[LittleInch]

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/piping-geometry-grasp-line-layout/

Remember - More details = better answers
Also: If you get a response it's polite to respond to it.

 

[DGrayPPD]

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.

 

[dik]

Thanks, LittleInch...

Dik