1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

Large diameter pipe connection

Discussion in 'Plumbing and Central Heating' started by svouts, 5 Oct 2019.

  1. svouts

    svouts

    Joined:
    16 May 2011
    Messages:
    249
    Thanks Received:
    4
    Country:
    United Kingdom
    I need to connect a 2.5 inches steel pipe to an 1 inch pipe. It is in tight space and has a wooden floor underneath, see the pictures.

    I looked at electric pipe threader but they go up to 2 inches.

    Any ideas as how to connect a reducer to the 2.5 inches pipe? What options do I have?

    -Any threader that can do 2.5 inches?
    -Pressure fit?
    -Welding, like TIG welding?

    IMG_20191005_122510.jpg IMG_20191005_122459.jpg
     
  2. Sponsored Links
  3. Paulg31

    Paulg31

    Joined:
    26 Mar 2008
    Messages:
    120
    Thanks Received:
    13
    Location:
    Warwickshire
    Country:
    United Kingdom
    What's the pipe for?
     
  4. svouts

    svouts

    Joined:
    16 May 2011
    Messages:
    249
    Thanks Received:
    4
    Country:
    United Kingdom
    This is for central heating, radiators water circulation.
    We change most pipes but this one we need to connect with the new pipes.
     
  5. Madrab

    Madrab

    Joined:
    4 Oct 2012
    Messages:
    8,554
    Thanks Received:
    2,479
    Location:
    East Renfrewshire
    Country:
    United Kingdom
    Are you sure it's for radiators ..... do you live in a warehouse?

    If it is for radiators then a custom fit welded connection would probably be the best option.
     
  6. Sponsored Links
  7. svouts

    svouts

    Joined:
    16 May 2011
    Messages:
    249
    Thanks Received:
    4
    Country:
    United Kingdom
    Yes it is an old house that was converted to modern system with combi boiler but left some old pipes. To this one I have no access to change the whole of it. I need to fit a reducer from 2 1/2 inches to smaller diameter.

    Welding looks a bit dodgy in the right space and the wooden flooring underneath.
     
  8. Madrab

    Madrab

    Joined:
    4 Oct 2012
    Messages:
    8,554
    Thanks Received:
    2,479
    Location:
    East Renfrewshire
    Country:
    United Kingdom
    You have access to the other end I take it? Can't you just thread a new pipe through that one? You mention reducing to 1", you could possibly thread a 28mm plastic pipe through that size of pipe, length and numbers of tight bends dependent of course.
     
  9. JimCrow

    JimCrow

    Joined:
    31 Jan 2011
    Messages:
    674
    Thanks Received:
    234
    Location:
    St. Kilda
    Country:
    United Kingdom
    • Like Like x 2
    • Thanks Thanks x 1
  10. svouts

    svouts

    Joined:
    16 May 2011
    Messages:
    249
    Thanks Received:
    4
    Country:
    United Kingdom
    Great, many thanks!
    That primofit adaptor will solve my problem, I may use it also for some smaller diameter pipes instead of rending an electric threading tool.

    PS: the other option would be to destroy some of the recently new kitchen done by the previous owner and some basement walls underneath...
     
  11. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page