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Old 04-24-2010, 03:15 PM   #1
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rubber gasket donut for cast iron sewer pipe to pvc


hello,

running into some trouble this afternoon. i have a 4" rubber donut that i am supposed to put into the hub of my 4" sewer pipe and will be fed by my 3" drain via a 4"x3" reducer (according to the plumbing guy at HD). for the life of me, i cannot get short 4" seciton of pvc into the gasket while it is in the hub, no matter how hard i try. it seem it is just a hair to large. i even tried sanding down the pvc, but that is not working at all. after doing some research online, i found this picture ( http://www.terrylove.com/images/replace_lead_bend.jpg ) it looks like they have the 3" going into the rubber gasket. However, i do not know if that hub is off a 3" or 4" pipe.

I guess my question is - do i come out of the rubber donut, gasket, whatever you want to call it with the 4" pvc or the 3"??

Might be a stupid question, but i'm stuck . thanks for your help :-)

Jamie

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Old 04-24-2010, 04:14 PM   #2
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rubber gasket donut for cast iron sewer pipe to pvc


Smear a few drops of liquid dish soap on the end of the 3" PVC and around the inside of the donut.

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Old 04-24-2010, 07:51 PM   #3
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rubber gasket donut for cast iron sewer pipe to pvc


This should give you the answer---Main House Drain/Through Wall Cast Iron Pipe

You want to use 3" out of the 4" hub--Mike---
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Old 04-24-2010, 11:15 PM   #4
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rubber gasket donut for cast iron sewer pipe to pvc


bevel the end of the 3" pipe then soap it up
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Old 04-25-2010, 09:08 AM   #5
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rubber gasket donut for cast iron sewer pipe to pvc


Yep! Use a file, or equivalent, to bevel the end of the PVC. Do use soap, the thicker the better, on the PVC and the doughnut. Push, Push, Push. It's never been easy, but it will go in. Then you have a tight seal. David
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Old 04-25-2010, 09:58 AM   #6
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rubber gasket donut for cast iron sewer pipe to pvc


a piece of wood across the back of pipe smacked with a hammer helps sometimes also
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Old 04-25-2010, 12:29 PM   #7
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rubber gasket donut for cast iron sewer pipe to pvc


I prefer a twisting motion with the soap on the donut and pipe. Smacking it could rip the donut. Just my way of doing it.

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