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Old 03-18-2012, 08:09 AM   #1
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Mission Coupling


Does UPC code say anything about couplings used on the main drain? I want to use a mission coupling for a 3" PVC to 3" copper transition on the main drain where it exits the wall. I would of course have everything properly supported so as not to put any undue stress or strain on the coupling/joint.

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Old 03-18-2012, 09:33 AM   #2
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Mission Coupling


As far as I know it's OK.
Use a "mission-band" with a stainless-steel wrap.

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Old 03-18-2012, 05:10 PM   #3
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Under the ipc which I understand is close to the upc that coupling cannot be use in a horizontal application. Except at the lateral. Some inspectors will let it fly if the 3 is inserted at least 2 inches into receiving piper example going from 3 to 4.
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Old 03-19-2012, 05:38 AM   #4
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Can you reference the page or section in the IPC? I actually meant IPC in my original post.
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Old 03-19-2012, 08:25 AM   #5
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Not sure you would find it in the book, this was discussed at continuing education class, the code book make very little reference to repairs, most are left to the field inspectors judgment, what may be ok to one inspector may not be for another, in this case we covered this coupling in a state continuing education class. So we y got the information from a code compliance instructor. May be ok in other states under the ipc.
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Old 03-19-2012, 07:56 PM   #6
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Do you have a picture of pipe youre trying to repair?
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Old 03-19-2012, 08:30 PM   #7
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so if this is true how do you connect no hub cast in a commercial setting or sometimes residential
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Old 03-19-2012, 09:35 PM   #8
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Quote:
Originally Posted by jaydevries View Post
so if this is true how do you connect no hub cast in a commercial setting or sometimes residential
There can be no argument if it's shielded
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Old 03-19-2012, 10:03 PM   #9
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4 to 3 cast iron 4x3 reducer no hub with no hub coupling / pvc to cast same but with no hub adapters and no hub couplings 3 inch copper to cast or pvc Hercules couplings with transition adapters. All solid unions no rubber spacing.
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Old 03-20-2012, 03:41 PM   #10
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Mission Coupling


My question would be: Why is the building drain or building sewer only 3"?
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Old 03-20-2012, 06:34 PM   #11
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My question would be: Why is the building drain or building sewer only 3"?
Im guessing it probably jumps to 4" outside the wall
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Old 03-25-2012, 08:09 AM   #12
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Mission Coupling


No pics yet but my drain is 3 inch copper and transitions to 4 inch pvc just beyond the stem wall on the outside. The ultimate way to do it I guess would be to dig down to the 4 inch and run pvc back into the house fro there.

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