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Connecting into a 3 inch soil pipe? Is there a fitting?

Discussion in 'Plumbing and Central Heating' started by polly_x, 20 Nov 2007.

  1. polly_x

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    Does anyone know where I can get fitting to connect into an existing 3 inch soil pipe?

    I have seen the flange type ones for 4 inch where you drill the hole and then bolt it around. Where can I get a 3 inch version?

    I think its a strap boss?

    Thanks,
     
  2. hi-spec plumbing heating

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    is it a plastic or cast ?
     
  3. polly_x

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    Sorry, its plastic.

    3 inch Vertical existing stack that I want to connect a new waste into for sink and bath in the loft.

    Thanks,
     
  4. hi-spec plumbing heating

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    you sure it's 3"
     
  5. cb9002

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    Just a thought here, but my house has a normal 4" stack, but above the highest connection it is reduced into a 3" for the vent pipe out of the roof.

    The OP did say "Loft", so I reckon they might be trying to connect into the very top of the soil stack, currently used as a vent.
     
  6. polly_x

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    Thats exactly what mine is like. All 4 inch then with a 3 inch vent above the last toilet going up to the roof.

    Was hoping that I could connect into this 3 inch pipe higher up, rather than running a sink/bath drain all the way down the void to the 4 inch section.

    Any problems with that?

    Any ideas where to get a 3 inch strap boss?

    Thanks,
     
  7. hi-spec plumbing heating

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    never seen one.
    raise the 4" section higher or even to the top.
     
  8. Nige F

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    :eek: .I have years ago .....and now Polypipe allegedly make them :idea: I asked while I was in the merchants ;)
     
  9. hi-spec plumbing heating

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  10. gas4you

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    Local drain center stock 3" strap on boss. I fit them quite often. Got one to do tomorrow.
     

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