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Washing Machine and Tumble Dryer sharing same waste pipe

Discussion in 'Plumbing and Central Heating' started by molko, 15 Nov 2012.

  1. molko

    molko

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    Hi

    Hoping for some help, please excuse my ignorance in these matters.

    We have a Washing Machine plumbed in, the waste water goes directly down a waste pipe which looks like this http://www.screwfix.com/p/waste-pipe-32mm-pack-of-10/19046 but with threads at the bottom (but not at the top).

    I now want the waste pipe from the Tumble dryer (condensing) to go down the same pipe - however the waste pipe is too narrow to fit both the washing machine and the tumble dryer.

    I think i need a 'trap' ? http://www.screwfix.com/p/appliance-trap-adaptor-40mm/11180

    However there are no threads at the top of my waste pipe - so i think i need a long trap.....with threads at the bottom ?

    Or are there any other alternatives ?

    Bottom line, i need a long pipe that can take a tumble dryer and washing machine waste...

    How do i measure the pipe, is 40mm/32mm the diamter ?

    Thanks for any help :?:
     
  2. molko

    molko

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  3. Hugh Jaleak

    Hugh Jaleak

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  4. molko

    molko

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    Hi

    Yes, the washing machine hose is just stuffed into the downpipe, it looks a little like this :

    http://www.mcalpineplumbing.com/1-189-standpipe-trap.html

    Does the thing you have described just fit ontop of my downpipe ?

    I would also need some kind of connector for the end of the washing machine hose, i think the hose as it is now is just stuffed down the waste pipe.

    Does that make sense ?

    Thankyou for your help
     
  5. JohnD

    JohnD

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    It is correct to have the washine machine waste hose pushed loosely into the standpipe, this prevents any suction or pressure occuring leading to syphonage. The trap prevents any drainage smells rising into the room.

    The trap is sized to be able to carry the amount of water the washer can pump out, and the tall pipe means that it will not (unless there is a blockage) spill out of the top of the pipe.

    The pipe should have at least one wall-clamp on it near the top to prevent the weight of the hose and water making it lean over.
     
  6. molko

    molko

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    Hi, that is exactly what I have...You have described my configuration.

    So what part do I need to be able feed the waste pipe from the Tumber Dryer ?

    Is this still suitable http://www.mcalpineplumbing.com/traps/domestic-appliance-traps/1-189-twin-connector.html given you recommend that the Washing Machine waste pipe should be loosley inserted into the down pipe

    Thanks
     
  7. JohnD

    JohnD

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    on mine, I have a spigot branch part-way down the standpipe.

    I am not a plumber, there are doubtless other ways to do it.

    the hoses both need to loop upwards, above the hight of the standpipe, to prevent water from one running down the other.
     
  8. Hugh Jaleak

    Hugh Jaleak

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    http://www.mcalpineplumbing.com/traps/domestic-appliance-traps/1-189-twin-connector.html is fine. This will fit onto the top of your existing standpipe, it is designed to allow two appliances such as a washing machine/dishwasher/etc to drain into the same pipe.

    Personally I would also secure the hoses with hose/jubilee clips of the appropriate size to prevent the hoses coming off the adaptor when the machines are pumping out. Should prevent the hoses coming off and flooding the room!
     
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  10. molko

    molko

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    Hi

    Thanks for all the advice so far...

    I have a couple of questions

    My standpipe looks like this http://www.mcalpineplumbing.com/1-189-standpipe-trap.html and it has no threads at the top

    The suggested Twin Connector http://www.mcalpineplumbing.com/traps/domestic-appliance-traps/1-189-twin-connector.html has threads - so will this still work ?

    Would be possible to get a stand pipe with the twin connectors already on it ? Then I could just replace like for like.

    I dont really have much room above my existing stand pipe, so fitting the Twin Connector may be problematic, failing that i may have to cut my existing Stand Pipe down.

    Thanks for any help.
     
  11. Hugh Jaleak

    Hugh Jaleak

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    The McAlpine 'Twin connector' fits onto the spigot (plain) end of the standpipe. Undoo the large plastic nut at the bottom, slip this, the plastic 'O' ring, and the rubber seal over the pipe, fit the connector onto the pipe, and slide the nut, O ring and seal up to the connector and tighten gently. Hand tight is ample.

    Fit the appliance hoses onto the ribbed spigots and secure with hose clips. May need to cut a bit off the standpipe if necessary, junior hacksaw adequate for that.
     
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  12. molko

    molko

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    Brilliant....thanks
     
  13. mrdonatas

    mrdonatas

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    Currently I have the toilet room like in pic1. I would like to get washing machine and tumble dryer connected to the same waste pipe (pic2). Which one out of 2 Possible connections is the best one (pic3 or pic4) or them both are wrong?
    Would appreciate any advice.

    http://media.diynot.com/209000_208936_66989_50299364_thumb.jpg
    http://media.diynot.com/209000_208936_66990_24264982_thumb.jpg
    http://media.diynot.com/209000_208936_66987_14655214_thumb.jpg
    http://media.diynot.com/209000_208936_66988_57372762_thumb.jpg
     
  14. Hugh Jaleak

    Hugh Jaleak

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    From what I can tell from the pic (cant find binoculars at present....), 3 yes, 4 NO. Also assumes the current waste is 40mm, 32mm wont cope with a washing machine. Fit a standpipe as explained previously, then use the McAlpine 'Twin connector' to connect both hoses.
     
  15. mrdonatas

    mrdonatas

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    The main pipe is 36mm. Also, is it ok if I cut the vertical pipe and use pushfit tee?
     
  16. Hugh Jaleak

    Hugh Jaleak

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    36mm internal diameter should be 40mm waste, which is ok. If 36mm is external then probably 32mm pipe, not big enough. (Wont handle output from machine, possible flood risk.)

    Push fit will only fit push fit pipe, if in doubt what type you currently have use compression waste. Cutting into vertical section is fine.
     
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