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What adapter should I get?

I'm trying to install a forth tado radiator thermostat, but non of the adapters seem to work. I send photos of the valve to tado's support together with my assumption that it might be M28 x 1.5 valve. They didn't even look at the photos to confirm if the valve is actually this size and just asked how many of the adapters do I need, since they were missing in my set.

Can someone help me identify what valve is this?


  • Hello,

    Yes, they are M28x1.5, if they were any different you would've been informed by our support.



  • Hello,

    That’s not true. The valve is M33x2. I got a confirmation from your support on Monday. It fits the valve.

    Best regards,
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