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Washing Machine Waste Pipe

Discussion in 'Plumbing and Central Heating' started by SamMil, 14 Jun 2021.

  1. SamMil

    SamMil

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    Hi,

    Hoping for some help in understanding plumbing sizes!

    Our washing machine is currently connected up with the waste pipe just hanging into the other pipe (pic attached), but we get a smell coming up so want to enclose it. I was looking to attach using a T-piece connector and then put a blank on the end, but I can't get the sizes to match.

    I've attached a picture of the piece we bought that I think is slightly too big (it is a McALPINE 1½" Domestic Appliance Tee Piece). Any ideas on what size we would need, or if there is a piece that is better suited to do this job?

    Many thanks :)
     

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  3. just pumps

    just pumps

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    2nd picture, is there a U-bend at the bottom of that pipe or a simple elbow?
     
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  4. SamMil

    SamMil

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    It goes straight down into the floor/slab - no U-bend.
     
  5. just pumps

    just pumps

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    Most likely no U-bend so no water trap to hold smells back then. You must have an air break so you cant seal what you have there neither.
     
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  7. aptsys

    aptsys

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    Easiest thing to do is fit a washing machine standpipe. Don't just try to box it in.

    Something like a McAlpine WM3
     
  8. SamMil

    SamMil

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    Thank you both for your help. So, if I get the McAlpine WM3, do I then just get a 90° pipe to connect it to the existing vertical waste pipe?
     
  9. Nige F

    Nige F

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  10. Madrab

    Madrab

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    Who installed the washing machine? Looks like whoever did it just unscrewed the top off of an AAV and plonked the drain hose into the pipe, no wonder you're getting smells, there will be no trap.

    If you are going to use a stand pipe then you will need to use a little piece of the pipe to connect the stand pipe to the 90deg.

    Alternatively you could use a waterless trap - HEPvO/McAlpine
     
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