Termostatic Radiator valve adapter COMAP / Somaterm

thingiverse

This adaptator allow me to mount a Somaterm thermostatic head on a COMAP radiator valve body. I only modify a little bit this 3D part (Thank you to RNLDNKP) : https://www.prusaprinters.org/prints/10076-radiator-valve-adapter-m28-m30-pin-extension/files First there is a M28/ M30 adaptator. On my printer I had to raise the size to 101% but you will also find the original one. Secondly there is a pin (that is much more a plate ^^) that should be installed between the head and the radiator valve to fit both. I am not sure yet about the pin thickness that influence the room temperature for a definied thermostatic head setting. I tested the V3 putting the thermostatic head in the fridge and I detected that at 5°C the valve is fully open. It's not so bad but I detected an issue : when the thermostatic head is cold and fully unscrewed (at 5) the pin can move to an empty space in the head and block the thermostatic pusher in the "fully open" position. That is why I created the V5 pin that is thicker and avoid this issue at 5°C (be careful if your house is cooler than 0° I would say). With the V5, at 5°C the valve is mid-open so I think it's enough to avoid freezing of the house. I printed the adaptator with 0.05 layer height (try the thickest you have) and the pin with 0.1 layer height, both with a 0.4mm nozzle and 100% filling.