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Old 11-08-2017, 11:18 AM   #1
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Transitioning from 2” no hub cast iron to pvc


Can I use a no hub coupling to connect cast iron to a PVC 45 degree street elbow ?

Or do I need to use PVC no hub adapter fitting?

I also have a rubber 2” fernco, but that doesn’t seem to have that snug fit that the no hub coupling provides.







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Old 11-08-2017, 01:44 PM   #2
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Re: Transitioning from 2” no hub cast iron to pvc


Shielded coupling only. Fernco connections are not allowed for sanitary in my area.
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Old 11-08-2017, 01:55 PM   #3
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Re: Transitioning from 2” no hub cast iron to pvc


Quote:
Originally Posted by ct18 View Post
Shielded coupling only. Fernco connections are not allowed for sanitary in my area.


ct18. Just confirming a shielded no hub coupling - like the one pictured (shorter of the two) -can be used to transition from CI to PVC?

Thx


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Old 11-08-2017, 06:31 PM   #4
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Re: Transitioning from 2” no hub cast iron to pvc


No hub is only approved for cast iron to cast iron. Since you are using 2 different materials you will need a pro-flex band that connects from cast iron to plastic. A mission brand will also work the bands are called transitional coupling's by trades men. In the plumbing craft.
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