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Inside bore of 40mm plastic waste pipe?

Discussion in 'Plumbing and Central Heating' started by conny, 31 May 2021.

  1. conny

    conny

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    As the title says, What is the internal bore of a 40mm waste pipe?
    I'm looking to insert a 34mm outside diameter extraction hose into a piece of wastepipe. I have a short length of 42mm O.D. pipe but the internal is too large.
    Any suggestions on what size I need to get a 34mm I.D.?
     
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  3. just pumps

    just pumps

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    Pipe sizes stated are the I/D size in the uk.
     
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  4. conny

    conny

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    My project is trying to make a manifold for my dust extractor. The end of the vacuum pipe is flexible rubber with a diameter of 34mm. This fits snugly into the 35mm outlets on my machines. My idea was to have a length of pipe with a number of T joints along the length. From each T joint would come a separate hose going to the individual machines. When I am using a machine the hoses to the others would be plugged so I get full vac pressure on the one I am using. I have some other flexible pipe which will fit the outlets on the machines, it's just connecting to the manifold with the main pipe from the extractor I'm struggling with.
     
  5. just pumps

    just pumps

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    Instead of inserting the rubber hose inside a pipe can it not fit over and be secured with a jubilee clip.
     
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  6. conny

    conny

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    I would need some sort of adaptor to fit into the main vac hose and then into the 42mm pipe I have. The T joints would probably be easier to fit to the manifold with standard adaptors but these hoses fit the 35mm outlets so nothing would be needed on that end. It's just getting the manifold inlet hole to be 34/35mm diameter.
    I have about 3-4 weeks to try and sort something so not in a rush.
     
  7. JimCrow

    JimCrow

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    Here are Osma waste dimensions,
    ABS,
    ABS.PNG
    PP, Pushfit
    PP Pushfit.PNG
     
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  8. dilalio

    dilalio

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