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Drain Cock

  • 30-03-2020 7:48pm
    #1
    heffo500
    Registered Users, Registered Users 2 Posts: 966 ✭✭✭


    I got a new drain cock for my central heating as the old was removed by a previous plumber and never replaced.

    The 3/4 inch compression drain cock I got from the plumbers providers says 22mm on it and not 3/4 inch.

    Can I simply replace the nuts and olives with 3/4 inch versions? Or will I have to wait for everything to open up and swap it for a 3/4 inch one?

    Thanks


Comments

  • #2
    heffo500
    Registered Users, Registered Users 2 Posts: 966 ✭✭✭heffo500


    bump


  • #3
    heffo500
    Registered Users, Registered Users 2 Posts: 966 ✭✭✭heffo500


    Any one?


  • #4
    nick 56
    Registered Users, Registered Users 2 Posts: 165 ✭✭nick 56


    22mm is the metric English size fittings and such are far cheaper there as the are bulk made for the European market, the Irish size is as you know 3/4 . THEY are not the same.

    If it was drilled out for 22mm chuck it out , do you have a bit of 3/4 scrap you can try it on . some times fittings are marked as 22mm when they are fine (specials for the Irish market).

    dont try to use it if it and the olive are not a tight fit you will regret it.

    If its a job you can leave till you can check i would advise you to do so.

    Nick


  • #5
    heffo500
    Registered Users, Registered Users 2 Posts: 966 ✭✭✭heffo500


    nick 56 wrote: »
    22mm is the metric English size fittings and such are far cheaper there as the are bulk made for the European market, the Irish size is as you know 3/4 . THEY are not the same.

    If it was drilled out for 22mm chuck it out , do you have a bit of 3/4 scrap you can try it on . some times fittings are marked as 22mm when they are fine (specials for the Irish market).

    dont try to use it if it and the olive are not a tight fit you will regret it.

    If its a job you can leave till you can check i would advise you to do so.

    Nick

    Thanks Nick for the info, I'm just surprised as I bought it from my the regular plumbing providers I buy my supplies from. I wonder why Ireland never moved to 22mm?


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