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Free Draining vs No Pockets

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clementer

Chemical
Aug 2, 2006
3
Is a line specified as "free draining" the same as one specified as "no pockets"?
 
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Free draining would imply (to me) that there be no pockets and additionally no valves or other possible blockage.


"What gets us into trouble is not what we don't know, its what we know for sure" - Mark Twain
 
Pockets must be able to be drained, either manually or other. What is the application? Pharma has other conotations or requirements to say chemical.

Mark Hutton


 
Free draining means that the line can totally drain in either or both directions to empty the line. No pockets means that there should be no liquid traps. The resulting piping configuration described by these two notes will often be the same.
 
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