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Old 11-05-2012, 09:52 PM   #1
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nohub good for joining draining pipes?


A couple years ago we had some plumbers repair a tub/shower drain. They replaced the the overflow assembly and trap with plastic, and then they attached the plastic pipe to the remainder of the old iron pipe with a NoHub fitting.
I'm sure they knew what they were doing. So this nohub fitting is extremely reliable and long lasting? That rubber doesn't get stiff and crack with time?

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Old 11-05-2012, 10:08 PM   #2
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nohub good for joining draining pipes?


Years ago cast iron pipe was joined by putting the spigot end into the hub and packing it with oakum and then pouring lead on top of that- very labor intensive. Now, no-hub couplings are now used instead of hub & spigot joining methods- faster and reliable. No-hub couplings are the method of choice. Granted, like any product, there are inferior brands. But if installed and supported properly they should last a looong time. If its not leaking, no worries

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Old 11-05-2012, 11:17 PM   #3
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nohub good for joining draining pipes?


My shower drain pipe is coming out of the slab crooked. I'm thinking about busting out the concrete, and replacing the pipe and trap with plastic. So it would be good to No-hub the plastic pipe to the old drain pipe, and then put concrete over everything?
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Old 11-05-2012, 11:27 PM   #4
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nohub good for joining draining pipes?


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Originally Posted by darsunt View Post
My shower drain pipe is coming out of the slab crooked. I'm thinking about busting out the concrete, and replacing the pipe and trap with plastic. So it would be good to No-hub the plastic pipe to the old drain pipe, and then put concrete over everything?
Sure, it's perfect for joining dissimilar types of pipe.
Buy a nohub coupling that is labeled CI x Plas. Cast iron is slightly smaller in outside diameter. So one side of the coupling is slightly smaller as well.
You'll probably find the outside of the existing CI pipe is corroded. You can use a steel brush to clean it up.
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