I had a question
a very long time ago regarding thermostatic valves and cast iron radiators. on this forum. I am a private individual, so please bear with me.
I moved into another house a few years ago, so I don't have my old radiators anymore... but I am still in France.
Recently, I got my wife's approval to get old ornate cast iron radiators again on the new (to us) house. It seems that now, we have tons of valves to chose from (in fact, maybe 10 or 20 different models, but named differently at each store). I still have a question regarding these. Most of them are labelled 15x21 (½"), but is this tapered?
And regarding these radiators (I now have 3), some of the caps are 20x27 (¾") threaded, some are 15x21 (½"), and standard bushings seem to screw in easily. So I hope that I would be able to install old looking new valves easily.
I will have to remove the end caps (plugs/bushings, how should I call that?) to remove the inside gunk and remove broken elements. I'm still storing tools up to remove caps and unscrew elements.
I haven't been able for the time being to unscrew the caps, as my spark-plug wrench is not big enough, but it looks like the top caps are 1½" and the bottom caps are 2".
The main problem I see is that some of the caps have big holes (bigger than ¾"), so that I should change them, but I can't seem to find replacement plugs. I can find ornate or plain 1" or 1½" end caps, but can't seem to find reproduction 2" end caps. Do you know if/where I could find some?
If it does not exist, are there somewhere adapters that could fit in the big hole, be flush with the end cap so that I can screw in a valve without the assembly getting too big and bulky?
The other problem I have with these radiators is getting rid of the broken elements.
I found a fantastic
assembly toolkit (out of stock), but it won't work for the 2" nipple (if that's the case, I don't know yet their size, but the end plug seems to be that size). I know I could get a steel rod with a piece of steel at the end, but I can't weld unfortunately.
So, do you know any supplier of different sizes of assembly heads like this one: https://castrads.com/accessories/at001a-assembly-head-15-bsp/
Thanks a lot.