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Old 05-30-2019, 09:33 AM   #1
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Washing Machine Plumbing


Hello,

We just moved into a new house. It was built in 1960. We were testing out the washer in the basement and it seems like the drain hose is either not set up correctly or there is a clog in the pipes. When the washer switched cycles to drain water started spraying and gushing everywhere. So I stopped the washer. We bought some snake drain unclogging tools and didn't find anything. But the snake tools were able to reach the whole way through the S bend pipe. Need some advice and some help with this.
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Old 05-30-2019, 10:47 AM   #2
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Re: Washing Machine Plumbing


Can you determine what size the drain pipe is? If it's too small it won't be able to handle the quantity of water that the machine pumps out. I think washer drains require 2" but stand to be corrected.
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Old 05-30-2019, 11:17 AM   #3
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Re: Washing Machine Plumbing


Can you post a pic of the trap and stand pipe? It sounds like the pipe drains, just not fast enough to handle the amount of water. Could also be the stand pipe is too short or the drain size too small. Should be 2" for current code, but many have been set up with 1 1/2 and have worked fine for decades.
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Old 05-30-2019, 11:28 AM   #4
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Re: Washing Machine Plumbing


Interesting thought. I will take a look at the hose this afternoon and post a picture.
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Old 05-30-2019, 03:08 PM   #5
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The stand pile opening is 1 1/2 in and the washing machine draine hose is 1in.
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Old 05-30-2019, 04:17 PM   #6
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Re: Washing Machine Plumbing


One option is to change it to a sink that can handle that much water.
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Old 05-31-2019, 06:51 AM   #7
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Re: Washing Machine Plumbing


Good suggestion about the sink! I didn't think of that. Thank you I"m hoping to hear back from a few plumbers that I called.
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Old 05-31-2019, 07:17 AM   #8
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Re: Washing Machine Plumbing


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Originally Posted by HoneyBee Hiker View Post
The stand pile opening is 1 1/2 in and the washing machine draine hose is 1in.
What is the length of the stand pipe? If too short water might splash out. Should be about 2'.

On one occasion years ago I would intermittently would have a similar problem. My solution at the time was to fit the stand pipe with a threaded adapter, then a barbed fitting adapter. The hose would then slide over and be secured with a hose clamp.


I don't believe this creates a code issue, one of the master plumbers might chime in and clarify.
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Old 05-31-2019, 07:44 AM   #9
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Re: Washing Machine Plumbing


When you do that you eliminate the air gap and a waste waterr can back up into the washer under certain conditions.

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Old 06-01-2019, 01:13 PM   #10
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Re: Washing Machine Plumbing


Is your drain filling and squirting out water. If so you may have a blockage down the line.
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Old 06-01-2019, 02:10 PM   #11
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Re: Washing Machine Plumbing


It is common in that era of house that the 1 1/2" pipes, if buried and are a distance from the main stack, are filled with some solidified gunk, that running a snake will not dislodge or you may not even feel hindrance on it going in. The pipes could even be galvanized which is worse.

Have come across it many times, so when re-doing plumbing is not prudent, a laundry tub will need to be used to let the washer drain at its pace.
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Old 06-01-2019, 04:38 PM   #12
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Re: Washing Machine Plumbing


The drain water from a clothes washer carries a lot of lint with it. That can settle in and stop up the trap. If you got your snake to go through the trap it must be a small one. That lint will be soft and your snake can simply go through it.


Snake again. Run your snake in through the trap. Then fill up the stand pipe with water and work the snake through the trap several times. When the water has drain away, stick you hose in stand pipe and let the water wash away the lint as you work the snake back and forth through the trap.
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Old 06-03-2019, 08:37 AM   #13
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Re: Washing Machine Plumbing


Also, get yourself a lint trap for your washing machine hose!
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Old 06-04-2019, 10:04 AM   #14
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Re: Washing Machine Plumbing


Many modern washing machines require a 2 inch drain pipe even though their hoses may be just 1 inch. For those machines a 1-1/2 inch drain pipe, even perfectly clear, might never work.

You should not seal the drain hose into the drain pipe. This might overload the washing machine internal pump and shorten its life.

Either replace the washing machine drain pipe and trap (also called a standpipe) with a 2 inch one together with other drain piping as needed to meet code, or install/use a laundry tub (does not need faucets of its own)..
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Last edited by AllanJ; 06-04-2019 at 10:09 AM.
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clog , laundry , plumbing , s bend pipe , washing machine


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