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1/2" BSP connection

Discussion in 'Plumbing and Central Heating' started by daveaspy, 16 Jul 2020.

  1. daveaspy

    daveaspy

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    I have a 1/2" BSP bush I want to connect to some 22mm pipework, but not sure on the right thing to get a good seal. I have a 22mm tee with a 1/2" pipe connection but the threads are parallel and the bush just goes all the way in, and doesnt bottom out either so not really an option for a washer (and the bottom of the 1/2" female isnt really wide enough to support a washer)

    bush.jpg

    I was thinking a load a PTFE might be enough?

    Alternatively, I have a 1/2" tap connector which has a rubber washer that would seal against the flat bottom of the bush, however the tap connector has a bit of pipe protruding past the washer and the hole in the bush is not wide enough to go over it. I could drill the hole out on the bottom side of the bush to 15mm to make it fit, but don't currently have a bit that size so need to either order a bit or better still a fitting that would work - is there anything??
     
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  3. Terrywookfit

    Terrywookfit

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    What goes into the bush
     
  4. daveaspy

    daveaspy

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    1/8 NPT pressure sensor goes in the other end
     
  5. Terrywookfit

    Terrywookfit

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    Loctite 55 cord would be my choice.
     
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  6. Gasguru

    Gasguru

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    Just wind PTFE tap round the thread and form a taper...with the right no. of turns and taper the thread won't bottom out...or Loctite 55 cord.
     
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  8. oldbuffer

    oldbuffer

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    Or Flomasta Pipe Seal. Good stuff and easy to use.
     
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  9. daveaspy

    daveaspy

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    Thanks all, will give the PTFE a chance then get some Loctite if it fails :D
     
  10. Jackrae

    Jackrae

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    Last edited: 17 Jul 2020
  11. daveaspy

    daveaspy

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    I could swap my bodge for your bodge :D Thanks for looking though (y)
    I've got a good seal on my parts with tape at 6 bar so should be good enough
     
  12. DIYnot Local

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