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Old 12-04-2009, 07:44 PM   #1
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Furnace vent pipe


I noticed water dripping from the furnace vent pipe onto the basement floor. The 3" pipe comes out and then goes up and over the furnace duct and makes a 90 degree turn before going out the side of the house. The 90 joint is leaking at the seem. I think I can try and replace by cutting this part part out and then installing a new section and connecting it via two couplings.

My concern is the couplings. I doubt there is play to move the remaining into the new slip coupling. Any suggestions?

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Old 12-04-2009, 10:09 PM   #2
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Furnace vent pipe


Do you meen that after you cut it there will not be enough pipe left to slide into the coulping? If that is the case then you may need to replace a larger section and get enough pipe to slide in.

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Old 12-04-2009, 10:16 PM   #3
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Furnace vent pipe


Once I cut the bad section out, I think I can get one end via a slip coupling. I doubt I can get a slip coupling on the other end since the pipe that is in place is so rigid and I can't move it into the slip coupling. Can I use one of the expandable repair couplings? Are those okay for furnace vents?
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Old 12-05-2009, 10:29 AM   #4
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Use couplings without a stop in them or furnco's.
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Old 12-05-2009, 10:35 AM   #5
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Check them once a year for deterioration.
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