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Two pipe: concerned about one radiator
Hi, everyone. I'm currently working on getting my old two pipe steam system fixed up. As far as I can tell, none of the traps have been touched in decades, so I'm getting those replaced along with a laundry list of items I decided upon after reading The Lost Art of Steam Heating. I have one radiator that concerns me--it's the only column style radiator in the house, and it was designed for one pipe steam. I think it was added when the house was converted to or back from being an apartment building.
My concern is that the shutoff valve and the thermostatic trap both attach to the radiator at the bottom. I'm worried that when the trap is closed, the condensate at the bottom of the radiator is going to flow into the steam riser and cause water hammer.
After thinking about it for a while, I had an idea to pitch the radiator away from the shutoff valve and move the trap into the garage below, so that condensate can sit in the return line instead of in the bottom of the radiator. I've attached an image that should help explain it.
Will this work?