TRV/Thermostat Radiator Valve5 ADAPTORS FOR Giacomini 23mm Pushfit/Clamp/Clip-on Models ONLY. Suitable for older, pre 1999 radiator Valves with the now Obsolete 25mm Clamp or Clip-On fitting, and this then Converts it to the Modern 2025 Standard 30mm/M30 Ring-Screw fitting, FITSSMART TRV HEADS ONLY.
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