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Identifying TRV type

Discussion in 'Plumbing and Central Heating' started by Evostance, 29 Jun 2021.

  1. Evostance

    Evostance

    Joined:
    1 Sep 2015
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    Country:
    United Kingdom
    When we moved in, we replaced the old TRVs with Drayton RT212.

    I'm in the process of upgrading these to smart TRVs, however I cannot for the life of me either get them to fit, or find the right adapter.

    The TRVs I've tried are:
    https://a.aliexpress.com/_v5mAx1
    And
    https://a.aliexpress.com/_uQIlB9

    They seem to suggest they're M30*1.5, and then have a load of adapters for RA, RAV, Comap, RAVL & T+A Herz.

    Does anyone know which adapter, if any I'm supposed to use, or if I need another type of adapter?

    The pin in the first link seems too short, and the trv wobbles. The 2nd one might be OK, not 100%. It fits but unclear if it's working
     
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