Control

Don't Pocket

M

Thread Starter

MNak

I have seen in P&IDs that in some line there is a note says "Don't Pocket". What does it imply and what are the considerations for not pocketing.

Appreciate your replies.

Regards,
MNak
 
R

roy Matson

This means don't have a low point where liquid can accumulate. This is quite common on vent lines, the must run horizontal or slope down from the relief valve.

It also applies to lines other than relief lines.

Regards
Roy
 
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