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Old 09-19-2010, 04:51 PM   #1
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size of drain pipe


What size pipe do you need to drain 2 washers?

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Old 09-19-2010, 05:00 PM   #2
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size of drain pipe


A little more of an explanation--are you installing two washing machines?

If so each one will need its own 2" drain and 1 1/2 inch vent.--2 machines=2 drains.

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Old 09-19-2010, 07:25 PM   #3
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size of drain pipe


I live in a condo. the unit above me has a washer. the waste line I want to tie into is 2". Is that large enough line to carry water from both units?
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Old 09-19-2010, 08:45 PM   #4
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size of drain pipe


You should be o.k---Hard to tell without actually seeing the piping--You will need to have a vent pipe within 5 feet (I believe)--There are several licensed plumbers here--Let's see what they have to say--

If you can post a picture or a sketch of the plumbing--drains and vent--that would be very helpful.--Mike--
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Old 09-19-2010, 09:03 PM   #5
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size of drain pipe


A 2" horizontal pipe will handle 8 drainage fixture units. 2" vertical pipe will handle more so you will be ok. But plese read this thread in regards to suds relief- Multi-Units
Like oh'Mike said- 1.5 in. vent is needed

Last edited by TheEplumber; 09-19-2010 at 09:06 PM.
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