Thermostat Adapter M28 to M30 x 1.5 mm for Heart, Comap and More - Radiator Thermostat Heating Thermostat Adapter Radiator Valve/Heater Valve : Amazon.co.uk: DIY & Tools
radiator valve adapter" 3D Models to Print - yeggi
M30 TRV adapter for M28 valve (comap...) by AlexH_FR - Thingiverse
Does Aliexpress or similar have M28 to M30 adapters for radiator valves (TRV)? - Hardware - Home Assistant Community
DANFOSS - Thermostat Radiator Valve Danfoss ECO Bluetooth - SMARTHOME EUROPE
Aluminum Electrical Diesel Blow Off Valve/Diesel Dump Valve BOV Engine Silver | eBay