Heimeier Thermostat Adaptor M28 x 1.5 to M30 x 1.5: Heating & Cooling: Amazon.com.au
Herz H adapter M30 1,5-ről (BM) M28 1,5-re (KM)
TA adapter M28 - M30
Does Aliexpress or similar have M28 to M30 adapters for radiator valves (TRV)? - Hardware - Home Assistant Community
M28 x 1.5 Female Radiator Adaptor to Thermostat/Thermostatic Head M30 x 1.5 Male M28-M30 M28F-M30M (BLUMKRAFT) : Amazon.com.be: Tools & Home Improvement