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Herz GP radiator valve 'cogwheel' adapter?

jhgcreugers
jhgcreugers
in General Questions & Topics

Hi,

I'm trying to fit a tado radiator thermostat onto my radiators. It looks like i have Herz GP radiator control valves - straight model (5523).

20210206_153729.jpg

Now underneath the white knob is a little cogwheel on a round thick base which is secured with an allen key.

20210206_153839.jpg
20210206_153830.jpg

It looks absolutely nothing like any of the valves in the compatibilty guide:

https://tado-hc-downloads.s3-eu-west-1.amazonaws.com/Smart_Radiator_Thermostat_Compatibility_Guide_NL_V1.2.pdf

Does anybody know of an adapter or a way to fit the tado thermostat (without replacing the entire valve with a M30 x 1.5 mm valve?)


Thanks,


Jeremy

Comments

  • GrilledCheese2
    GrilledCheese2 ✭✭✭

    That valve is not a thermostatic valve - it’s just a regular manual valve. The grub screw on the side adjusts the maximum amount the valve can be opened, limiting the flow of hot water into the radiator.

    You will need to replace the Herz valve with a thermostatic valve before you can fit a Tado smart valve.

  • jhgcreugers
    jhgcreugers
    Thanks Grilled Cheese... That's what I was afraid of.

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