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Use two-pipe radiator in one-pipe system?
We have one-pipe steam heating. I have a badly flaking radiator in the LR that, in addition to looking bad, doesn't heat its side of the living room adequately. (The larger of two radiators in the roon is placed alongside the bottom of the stairs to the second floor, which is where I think most of its heat goes.) Instead of stripping/repainting or covering the current radiator, I'm thinking of replacing with it with a larger one that's in better shape. I found a great-looking two-pipe radiator on Craigslist on which both the supply and venting valves are set low on the radiator. Since the supply valve appears to match the one that's on my one-pipe system, can I replace the vent valve on the two-pipe radiator with a plug and use this two-pipe radiator in our one-pipe system?