Difference in No-pocket & No trap terms

From: <abdul>
Date: Wed Jul 20 2005 - 09:21:00 EDT

Greeting everyone

During the development of refrigeration piping layout, It is observed that some lines have a caution of "No-pocket" & some have "No trap" on P&IDs. Have same meaning of these two terms or Is there any difference in both terms. clarification is required in case of any difference.

Thanks in advance.

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[Non-text portions of this message have been removed] Received on Wed Jul 20 09:21:00 2005