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Old 12-12-2013, 12:33 PM   #1
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Legal ABS Connection?


Is this connection legal? [After asking I scratched the fitting the mechanical is used to connect with and it is definitely CI so I guess this is legal. Correct me if I am wrong.] It is located in the joist tunnel between the 1st and second floors of my house.

Two lines run to that 90. A 3" soil line and a 2" line that I believe vents. It looks like just beneath the chipboard there is antoher fitting that waste lines "T" into.

My concern is whether or not that steel clamp would be a mechanical connector similar to a very large Fernco and if it is would it be legal to connect ABS to ABS [Turns out it is ABS to CI].

Even if it may not be up to current code, this was built 24 years ago and I don't know that I would want to mess with it if it has been fine all that long and the connection looks good.
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Last edited by Klawman; 12-12-2013 at 12:53 PM.
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Old 12-12-2013, 06:34 PM   #2
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Legal ABS Connection?


Looks like some form of transitional coupling.

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Old 12-12-2013, 06:47 PM   #3
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Legal ABS Connection?


Quote:
Originally Posted by Ghostmaker View Post
Looks like some form of transitional coupling.
Yep. It couples ABS in the joist tunnel between floors CI dropping down in what looks to be a wall.
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Old 12-12-2013, 07:06 PM   #4
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Legal ABS Connection?


Replace the metal plumbers strap with the plastic version.
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Old 12-12-2013, 07:59 PM   #5
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Legal ABS Connection?


its called a mission cuppling....I think..... well i say that because iam getting forgetful...ha ha ha ..ben sr

Last edited by ben's plumbing; 12-13-2013 at 07:16 AM.
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Old 12-12-2013, 08:15 PM   #6
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Legal ABS Connection?


Yep ,thats a mission coupling.
The metal plumbers strap can eventually cut through plastic pipe and should be changed to plastic if its accessable.
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Old 12-12-2013, 08:59 PM   #7
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Legal ABS Connection?


I saw a roll of that plastic strap and thought the metal would be better, but can do the plastic easily enough.

Although the mission is legal (I found another one to connect a tub waste line to a CP stack pipe on the other side of the house), does the connection look as though the ABS may have back out about a half inch or more. Perhaps it was lifted up by an up and down earthquake or perhaps the installer found it easier to loosen the mission and lift the T up in order to raise the riser for the toiler flange. To lazy to simply cut a new riser.

If I so adjust the mission, should I replace it given that the rubber sleeve is 24 years old?

Last edited by Klawman; 12-12-2013 at 09:07 PM.
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Old 12-14-2013, 03:50 AM   #8
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Legal ABS Connection?


Steel plumber's tape on ABS pipe = no

Use this instead...

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