No that part doesn't look familar. It's at the top of the radiator where you would get air out of the radiator not where you would bleed the radiator. All there is (or was) a small screw which you would turn with an allen key.
Sorry if I sound ignorant but I know nothing about these things!!
Hi everyone, I hope you can help.
While I was getting air out of a radiator I lost the little screw that you are supposed to turn to get the air out. Does anyone know where I can get another and what size it is.
I did buy 1/8 inch & 1/4 inch air vent although I didn't need the whole thing,just...