Mysterious Orifice In Drain Pipe

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Old 10-03-20, 07:09 PM
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Mysterious Orifice In Drain Pipe

I am curious.

In this drain pipe in the basement crawl space there is a tiny nipple, just below the band of red tape. It is not dripping but it looks to be clogged.

Would anyone have any insight as to what that nipple is for?

The house was built ca 1930. The drain pipes are all cast iron. The section in question just came down vertically through the walls above and turns (nearly) horizontal to get to the trunk line going out to a septic tank.

 
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Old 10-03-20, 08:19 PM
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Wow.... that's interesting. What could that possibly be for ?
Is that threaded into the pipe ?
It would almost appear to be some type of drain but it would surely clog in that location.
 
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Old 10-03-20, 08:49 PM
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One could surmise that the tape once held a small hose that was connected to that tiny pipe nipple... must have been some sort of condensate line perhaps... maybe from an appliance that is long gone. Look for more red tape or abandoned small tubing in the vicinity. Strange place to locate it though.
 
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Old 10-04-20, 05:28 PM
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That pipe is so corroded that my guess is that is that it leaked at that spot and that's a makeshift plug, not a nipple.
 
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Old 10-04-20, 07:23 PM
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My guess was along the lines of RocketJSquirrel. I assume it would be more of a plug even if it looks like it should be open.
 
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Old 10-04-20, 07:25 PM
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I'm used to seeing pared down dowels hammered in as plugs.
 

Last edited by PJmax; 10-04-20 at 08:03 PM. Reason: typo
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Old 10-04-20, 07:51 PM
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It's a distinct possibility.
 
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Old 10-17-20, 11:06 AM
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Thanks.
I will need to go back and recheck to see whether that is a plug as opposed to a tube,
 
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