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Old 12-20-2010, 10:47 AM   #1
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Tap 2" Drain Pipe into 4" PVC Main Sewer Drain Pipe


I am going to attach a 2" PVC long-sweep wye and 2 no-hub couplings (rubber fitting I believe) to the 4" PVC main sewer pipe downstream of the main clean-out for the house...I am in Texas if that makes a difference.

Because I am tying in downstream of the clean-out, I will install a separate clean-out for the 2" drain pipe right where it comes out of the house (which drains water from a new laundry room with a sink, washing machine, and water softener). I will also install a vent for the sink, washer, and softener.

Does anyone know of a good video or illustration of how to install the long-sweep wye fitting into the 4" pipe that I need to cut? I have dug the dirt out away from a 2 foot long section of the 4" main sewer pipe. I have an adequate slope for the 2" drain line if I can attach the wye fitting on the side of the 4" pipe....is that acceptable?

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Old 12-20-2010, 07:50 PM   #2
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Tap 2" Drain Pipe into 4" PVC Main Sewer Drain Pipe


Don't know of any videos. But what I do is cut out about twice the length of the wye. Make sure the ends are square. measure the cut out length and make your wye and pipe stubs to match (minus 1/4"). Put the no-hub rubbers on the fitting stubs, role half of the no-hub rubbers back on top of themselves Slide the shields on the existing pipe ends so they are out of the way and drop the assembly in place. Flip the no-hub rubbers into position and slide the bands on and tighten to 60 inch lbs. (wow, I hope that made sense)
My city allows me to use ferncos outside, much easier. Check with your inspector. And yes you can lay the wye on its side. Also, is your outside pvc line sch 40 or 3034? They have different OD's nad no hubs won't work on 3034.

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Old 12-20-2010, 08:33 PM   #3
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Tap 2" Drain Pipe into 4" PVC Main Sewer Drain Pipe


The ppes are schedule 40. I understand everything you wrote...thanks. I am going to use an air admittance valve to vent...have any opinions on using one for the utility sink, washer, and water softener?
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Old 12-20-2010, 08:49 PM   #4
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Tap 2" Drain Pipe into 4" PVC Main Sewer Drain Pipe


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Originally Posted by brmatthews View Post
The ppes are schedule 40. I understand everything you wrote...thanks. I am going to use an air admittance valve to vent...have any opinions on using one for the utility sink, washer, and water softener?
I don't use them if there's another way-- but to each his own
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