Unknown pipe - can someone please help me identity this?


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Old 11-05-16, 11:05 AM
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Question Unknown pipe - can someone please help me identity this?

Broke up the basement floor for a bathroom rough-in and found a thin copper pipe buried in the concrete pad about 1/2 below the surface that appears to run to the floor drain. No idea what this is or why I need it, but it kind of looks like a gas line, but that makes no sense. I'd appreciate any help. Thanks

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Last edited by ray2047; 11-05-16 at 11:29 AM. Reason: Rotate first image.
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Old 11-05-16, 11:31 AM
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Could be a line to keep the drain trap from going dry. Does it go up in the wall?
 
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Old 11-05-16, 12:00 PM
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Interesting! I'll break up the floor a bit more to see where it goes and get back to you. Out of curiosity, why don't we want the drain trap to go dry??
 
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Old 11-05-16, 12:50 PM
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why don't we want the drain trap to go dry??
So sewer gas doesn't come out. https://en.wikipedia.org/wiki/Trap_primer
 
 

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