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Washing machine waste under floor when relocating washing machine

Postby Pantsmaster » Fri Nov 05, 2021 8:08 pm

Hi all,
I’m trying to relocate my washing machine to a new location. This will result in a fairly long (5-6m) waste pipe run which I’m hoping to run under our suspended timber floor through the basement. I know this is a long run but with the correct fall and supporting the pipes I think it can be done?

My question is about the standpipe and trap arrangement. If I use a regular washer trap, should I put a 90 degree bend on the output so I can run into the floor (effectively making it an S-trap) or should I have the trap itself under the floor level (ensuring the flexible hose is correct height).

Or should I use a waterless trap/valve (which might be better given the length of the run). If so I’m not sure how to actually connect that to the washer hose?

Thanks in advance!
Pantsmaster
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Postby stoneyboy » Sun Nov 07, 2021 12:24 am

Hi pantsmaster,
A standpipe with bend should be ok but use a swept bend rather than one of the tight ones, keep the trap above floor level unless you have easy access to the basement.
Regards S
stoneyboy
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