Hi,
I'm putting in a new washing machine tomorrow, and would like to ask how much higher should the standpipe be?
I am including a link with 2 pictures of how it is presently.(I have moved the electrical receptacle). In the picture, the distance from the top of the standpipe to the bottom of the "P" trap is 12". I was thinking of using one of those rubber joiners with 2 clamps and attaching 12" of plastic pipe. The plastic pipe is 1 1/2" and it would be connected to the 1 1/4" copper pipe.
Any problems anyone can see here? Is 12" more enough?
This would put the top of the standpipe 67" above the floor. Should it be a few inches higher? The manual says the discharge hose max. from the floor is 96", so there seems to be plenty of power to pump out.

I know ideally I should sweat another section of 1 1/4" pipe to the present setup but store only sells 10' sections(too expensive.
Hope I'm clear. Here are the pics:

http://photobucket.com/albums/f400/geoss54/

Thanks... George

Good morning George,
"I'm putting in a new washing machine tomorrow, and would like to ask how much higher should the standpipe be?"

Your trap and 12" raiser looks to be 1 1/2" not 1 1/4". We hold our traps as close to the floor as we can and make out standpipes 36".
However you can couple another 12" on to the existing standpipe using a No-Hub Band,(see image) and not a rubber coupling that isn't ridgid and cycle the washer to test for a overflow.
"I know ideally I should sweat another section of 1 1/4" pipe to the present setup but store only sells 10' sections(too expensive."
You're going to hardware stores where all they have is 10' lengths, Go to a plumbing shop where they have random lengths of copper in all sizes. Regards, Tom

Thanks for the reply.
Can you get these No-Hub bands at a Home Depot or do I have to go to a plumbing store? And do I use this "band" to connect the plastic to the copper.
The pipe actually looks bigger on the net. When I put a rubber sleeve on the pipe, the 1 1/2" is too big, and the 1 1/4 fits snuggly.

Would it be better though to sweat on a 12" piece of copper, rather than attach one with a coupler. Plus would it be better to have the standpipe all one size rather than downsizing from a 1 1/2" to a 1 1/4"?
Darn, it's hard to explain myself.
Thanks
George
p.s. I see in the stores that some of the gas cylinfers are advertised as burning hotter... is it better to use these type of propane cylinders?

Hi George,

I hope this works for you because by our standards you are woefully undersized. The normal size of a washer trap and stand pipe is 2". The length of the stand pipe is 36". You can try your new washer on what you have but don't be surprised if your present set up hasn't the capacity to carry away the discharge. You can purchase a copper coupling in the correct size and just slip it over the existing stand pipe ans slip the additional pipe in and cycle the washer to see if it will work for you and I hope it does.
Regards, tom

Thanks again,

I guess I could remove this too narrow pipe till the end of the "P" and then sweat an adaptor on... 1 1/4" to 2", but the part that enters the sewer drain, I don't think can be changed. Is it better if I did make new trap with 2" and use as much 2" as possible?
Thanks
George

What I would do George, is to try the washer with your present configuration after adding a piece. If the old washer worked perhaps the new one will too and you won't have to hassle a thing. Cheers, Tom

Thanks again,
I went downstairs and re measured the pipe. When I measure the inside diameter of the pipe it is actually
1 1/2". So I found a plumbing supplier and willl go tomorrow morning and buy an 18" section and a connector.
Just one question, Do I sweat it the same as smaller pipe... Have done a lot of 1/2" and 3/4" but not this big. Do I blow the water out of the trap before burning? Or just put a cold rag around the "P"... Thanks, again for all your help.
And is regular cylindrical propane sufficient or the hotter burning one?
George

Hey George,

Let's try it out before you solder and then I'll walk you through it.
You can purchase a copper coupling in the correct size and just slip it over the existing stand pipe and slip the additional pipe in and cycle the washer to see if it will work for you and I hope it does. Cheers Tom

Thanks,
Just bought the copper coupling and checked on the remaining pipe and fits great, sanded down the coupling inside and the outside of the pipe... tomorrow morning wikll buy the 1 1/2" extension pipe. The LG comes with a real nice attachment for the drain hose, so I don't see a problem with it backing up(fingers crossed)

My dad, who lived here, had the old hose(wider than new one) taped tight to the standpipe. I took off the tape and did a couple of loads and there was no backflow of water, and this was an old "lots of water" washer. The new one is a front load... looking forward to soldering
George

Did as was guided, and as you can see, have a 24" standpipe now. Did 3 loads yesterday, and no oversudsing or water backup. The top of pipe is about 62" above floor, and LG says to not go higher than 96".
Also, moved electrical receptacle and installed GCFI plug.
I also braced the gas line ;pkipe, because before it just hung there...
Thank you... George

http://photobucket.com/albums/f400/geoss54/