Plumbing – How to extend the washing machine standpipe

clothes-washerdrainplumbingplumbing-fixturewashing-machine

I need to extend my standpipe so that it's higher than my washing machine drum height.

I need it to be about 24" taller than it currently is. I'm not experienced doing any plumbing work beyond installing a new shower head.

I've included photos of the current state of my standpipe.

I'm renting an apartment, so I'd prefer a solution that could be reversible if needed.

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Best Answer

That should be easy. Start by figuring out how much additional height you need. Use a pipe wrench to loosen the faceted collar at the top of the trap, and the standpipe should just pull up and out of that fitting. Take it to a store and tell them you need a piece the same size but however-much longer. You may have to get something a bit longer than that and have the store cut it down, or use a hacksaw to cut it down yourself. Slide the new pipe into place, and use the wrench to tighten the collar of the slip-joint again to seal the connection.

(Depending on how it goes, you may need to repack the slip-joint to get a good seal. That isn't difficult either -- remove the ring entirely, wrap some rope packing around the pipe just above the junction (or install a new packing washer, depending on the age of the hardware), slip the ring back over the tube and tighten it onto the threads; doing so compresses the packing and makes the joint waterproof.)