Need a 3/4 to 3/4 isolation valve or will this work?

Discussion in 'Plumbing and Central Heating' started by julioarca, 4 Apr 2008.

  1. julioarca

    julioarca

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    I am replacing the bath and need a 3/4 isolation valve..Struggling to find one, need to try Plum Centre tomorrow.

    Does one exist

    Would the following work....Use a 22mm isolation valve but replace the 22mm olive with a 3/4 one...

    Any ideas?
     
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  3. Redhotferrari

    Redhotferrari

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    Assume that the pipework is 22mm copper, use a 22mm isolation valve, 3/4 is the thread size :eek:
     
  4. jona

    jona

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    yes, a 22mm valve will fit if you use a 3/4 olive.
     
  5. namsag

    namsag

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    22mm with copper olive will work spot on even certain brass ones will pull up perfectly ok on 3/4. 3/4 Olives prob cost you about£1 each

    Redhot 3/4 is old copper pipe size and nothing to do with thread
     
  6. jona

    jona

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    im assuming the pipe is the old imperial 3/4 which is smaller than 22mm and therefore you would need a 3/4 olive which you can buy separate.
     
  7. julioarca

    julioarca

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    cheers guys, the pipe is 3/4 or 21mm, so I would be ok substituting the 22mm olives with 3/4 olives and nip it up.
     
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  9. Redhotferrari

    Redhotferrari

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    namsag, I stand corrected, read the original post wrong!
     
  10. namsag

    namsag

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    YEP
     
  11. julioarca

    julioarca

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    sorry guys, would i be ok doing what I suggested
     
  12. jona

    jona

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    ive used 22mm olives wrapped in ptfe on 3/4 in the past but had a bad experience a few years ago.left a 22mm iso valve on a mains supply into a basement boiler room of a health centre ,came back the next morning to find 3 boilers half submerged in water.ive always used 3/4 olives since!
     
  13. namsag

    namsag

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    MY yep answer was to you yes perfectly ok
    FEK somone else butted in :LOL: ,julio answer for you
     
  14. julioarca

    julioarca

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    fantastic, thanks for your help....made me happy
     
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