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Discuss 3/4 shower mixer to 22mm tap conn problems in the Plumbing Forum area at UKPlumbersForums.co.uk.

  1. AdTee

    AdTee New Member

    An old thermostatic mixer I want to reuse has 3/4 bsp inlets, with inserted non return valves. All the 3/4 to 22mm tap connectors I look at seem to have a protruding section to fit inside the 3/4, but the nrv which is of equal diameter to the protruding section, means they just sit against each other. Originally the mixer had 15mm reducing elbows on the inlets, and the 3/4 part of the elbow sat flush to the diameter of the mixer thread (albeit with a fibre washer sandwiched inbetween).

    Will the tap connectors I have mentioned create a watertight seal, or is there a 3/4 to 22mm tap connector available (elbow if poss) thst would sit flush?

    Many thanks
     
  2. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    Cut the upstand off
     
    • Agree Agree x 2
  3. AdTee

    AdTee New Member

    Thanks Shaun. I'll use the Speedfit connectors then, as much easier to cut the plastic than brass.
     
  4. Riley

    Riley S. Mod Trusted Plumber GSR Top Contributor!!

    Show us pics of what you intend to use as I think what your proposing is not right
     
  5. AdTee

    AdTee New Member

    Pics attached of mixer, original elbow, and tap connector.

    Thanks.

    15498105182197321313157287135103.jpg

    15498105695338405973207899231247.jpg
     
  6. Riley

    Riley S. Mod Trusted Plumber GSR Top Contributor!!

    I’d use a female iron we’re it me.
     
    • Like Like x 1
  7. AdTee

    AdTee New Member

  8. ShaunCorbs

    ShaunCorbs S. Mod Trusted Plumber GSR Top Contributor!!

    • Agree Agree x 2
  9. AdTee

    AdTee New Member

    Thanks Riley. Much appreciated.
     
  10. CBW1982

    CBW1982 Member

    Is that not a 3/4” connector I see in the pic? Could you not just get some new washers for it?
     
  11. AdTee

    AdTee New Member

    Yes it is 3/4 but to 15mm and as I'm refitting it, I thought it best to carry a 22m feed rather than reducing down. Have I got that right? Thanks.
     
  12. AdTee

    AdTee New Member

    ×22mm not 22m!
     
  13. CBW1982

    CBW1982 Member

    It all depends on your feeds. If your using mains then 15mm is fine, but if using gravity then yes 22mm.
     
  14. AdTee

    AdTee New Member

    Thanks, it's mains. Maybe I'll just stick with the existing elbows then. The outlet and overhead arm & rose are 3/4 - would the 15mm feed be enough for that?
     
  15. Riley

    Riley S. Mod Trusted Plumber GSR Top Contributor!!

    Yep
     
    • Agree Agree x 1
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