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Old 07-19-2012, 06:40 AM   #1
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Adding a washer drain to main drain stack....


Hi Guys.....

The wife and i decided we would like to move our washer downstairs in the basement. We would like to move it to the left of the main drain stack.

The problem i am having is i am not to sure how to connect the drain & vent. I wanted to tap into existing cleanout but its a 3.5'' ABS and i can't seem to find anything that will fit.

Of course i would of readded a cleanout if it would of worked...so thats out of the question.

Then i thought of cutting the main stack but the height i would have to cut is over 18'' from the floor, cause there is the cleanout and a vent / drain that goes in the garage for a sink.

So cutting all above that to add a washer would be over 18'' from the floor and i am afraid it would be to high for the washer to drain properly ??
Maybe cut below and add some flexible couplings with band clamps or try saving the existing tube and break the existing adapter?

Any ideas.....how i can add a washer drain line ??? How would you guys do it ?

I would hate to dig up the floor as i don't want to spend big bucks.

I added a pic to give you guys a better idea of what i am up against.

Thanks in advance !
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Old 07-19-2012, 09:42 AM   #2
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Adding a washer drain to main drain stack....


One method is to cut above the cleanout or 90 and remove wye for the sink. Then use a ram bit like this one to clean the pipe out of the existing clean out. Add a 3x2 double wye to reconnect the sink and washer.
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Old 07-19-2012, 02:10 PM   #3
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Adding a washer drain to main drain stack....


Thanks for the advice , this is sort of what i had in mind.

Do i add a double wye or a double sanitary tee ?

I guess also to reattach the 3" ABS i should use a Fernco as it probably won't give enough to glue a coupling in.

Last edited by phantomvs; 07-19-2012 at 05:39 PM.
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Old 07-19-2012, 06:31 PM   #4
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Adding a washer drain to main drain stack....


Since we dis not want to cut up our basement floor, I just ran a ten foot piece of 1 1/2 pvc to the floor drain, then did up the P-trap and wash tub as normal. Before that, was a inch hose with a air allowance trap, connected to the old washer that came with the house.
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Old 07-19-2012, 09:48 PM   #5
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Adding a washer drain to main drain stack....


how for to the left from main stack are you planning on running pipe to wash machine? just unscrew clean out screw in a male fitting glue a 45 street then a 3 inch wye turned up. glue new clean out on the wye then continue 3" horizontal using hanger a maximum every 4' at a 1/4" per 1' fall. then depending on how far away pipe is from main stack from there on what to do. either place 3 " trap with a min. of 18 stand pipe.or a t turned reduced to 2" up to use an air admittance valve (aav) then trap with 18" stand pipe.

http://www.google.com/imgres?hl=en&s...9,r:1,s:0,i:79
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Old 07-20-2012, 06:39 AM   #6
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Adding a washer drain to main drain stack....


Quote:
Originally Posted by jaydevries View Post
how for to the left from main stack are you planning on running pipe to wash machine? just unscrew clean out screw in a male fitting glue a 45 street then a 3 inch wye turned up. glue new clean out on the wye then continue 3" horizontal using hanger a maximum every 4' at a 1/4" per 1' fall. then depending on how far away pipe is from main
The new location is about 12 feet from the main drain .

I tryed finding an adapter for the cleanout but its a 3 1/2" threaded cap. There are no adapters for that...atleast i didn't find any.

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