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leak at radiator pipe union
I live in a three storey walk-up condominium building with steam heat. The system is as old as the building - about 90 years. The system is a little quirky, but generally works really well.
One of my radiators has a leak at the packing nut and at the pipe union. Can anyone provide step-by-step instructions on how to repair both leaks? My instinct is to take a pipe wrench and try to tighten the nuts, but I'm a little worried about the possibility of breaking the cast iron.